<PAGE>

                                                                   EXHIBIT 10.10
                                                                   -------------

                          REGISTRATION RIGHTS AGREEMENT

                                 January 4, 2002

     The parties to this agreement are MedSource Technologies, Inc., a Delaware
corporation (the "Company"), and each of the other individuals or entities
executing a signature page to this agreement (collectively, the "Stockholders").

     Simultaneously with the execution and delivery of this agreement, the
Stockholders are acquiring shares of the Company's common stock, par value $.01
per share ("Common Stock"), pursuant to an Agreement and Plan of Merger dated as
of December 31, 2001 among the Company, MedSource Trenton, Inc., HV
Technologies, Inc. ("HV") and Rudolph E. Carlson, as the representative of HV's
shareholders. Such shares of Common Stock are the only shares of capital stock
of the Company entitled to the rights and benefits, and subject to the terms and
conditions, of this agreement, and are hereinafter collectively referred to as,
the "Shares."

     The Company desires to provide to the Stockholders certain rights regarding
the registration of the Shares, all upon the terms and conditions set forth
below.

     It is therefore agreed as follows:

     1.  Certain Definitions. As used in this agreement, the following terms
shall have the meanings provided below:

         (a)  "Commission" means the United States Securities and Exchange
Commission or any other federal agency at the time administering the Securities
Act.

         (b)  "Holders" means the Stockholders and their respective permitted
transferees who hold Shares.

         (c)  "Other Securities" means, at any time, those shares of Common
Stock, and of any other class or series of capital stock of the Company or other
securities of the Company representing the right to acquire Common Stock, that
the Company is required to, or has determined to, register pursuant to a
registration statement filed by the Company with the Commission pursuant to this
or any other agreement.

         (d)  "Person" shall mean any individual, partnership, joint venture,
firm, corporation, association, trust or other enterprise or any government or
political subdivision or any agency, department or instrumentality thereof.

         (e)  "Registrable Securities" means the Shares and any other securities
issuable in replacement thereof by way of a recapitalization, exchange, merger,
consolidation, reorganization or other transaction; provided, however, that any
share shall cease to be a Registrable Security under this agreement when (A) a
registration statement with respect to such share's public sale shall have
become effective under the Securities Act, (B) it has been disposed of as
permitted by, and in compliance with, Rule 144 (or successor provision)
promulgated under the Securities Act or (C) it shall have ceased to be
outstanding.

<PAGE>

         (f)  "Registration Expenses" means all expenses incident to the
Company's performance of or compliance with the provisions of section 2
including, without limitation, all registration, filing and National Association
of Securities Dealers, Inc. fees, all listing fees, all fees and expenses of
complying with securities or blue sky laws (including, without limitation,
reasonable fees and disbursements of counsel for the underwriters in connection
with blue sky qualifications of the Registrable Securities hereunder), all word
processing, duplicating and printing expenses, messenger and delivery expenses,
the fees and disbursements of counsel for the Company, and the reasonable fees
and expenses of one counsel on behalf of the Stockholders (including the
Holders) whose shares of Common Stock are included in the registration
statement, with such counsel selected by a majority-in-interest of such holders
(according to the number of shares of Common Stock each such holder is directly
or indirectly registering for sale in such registration statement), and the fees
and disbursements of its independent public accountants, including the expenses
of "comfort" letters required by or incident to such performance and compliance,
and any fees and disbursements of underwriters customarily paid by issuers or
sellers of securities; provided, however, that Registration Expenses shall
exclude, and the Holders shall pay, underwriters fees and underwriting discounts
and commissions in respect of the Registrable Securities being registered
hereunder as well as any fees and expenses of counsel to the Holders of the
Registrable Securities hereunder (other than those of the one counsel referred
to above).

         (g)  "Securities Act" means the Securities Act of 1933, as amended, and
any subsequent similar federal statute, and the rules and regulations
promulgated thereunder.

     2.  Piggyback Registration.
         ----------------------

         2.1  Right to Include Registrable Securities.
              ---------------------------------------

         (a)  Subject to section 2.1(b), if the Company at any time proposes to
register any of its securities under the Securities Act (as defined below) by
registration on Forms SB-2, S-1, S-2, S-3 (but not Forms S-4 or S-8) or any
successor or similar form(s) (except registrations on such or similar forms for
registration of securities in connection with (i) an employee benefit plan or
dividend reinvestment plan or a merger, consolidation or other business
combination, (ii) debt securities that are not convertible into Common Stock, or
(iii) the Company's initial public offering), whether or not for sale for its
own account, it shall, each such time, give written notice to the Holders of its
intention to do so and of the Holders' rights under this section 2 at least 30
days prior to the filing of a registration statement with respect to such
registration with the Commission. Upon the written request of any Holder made
within 20 days after the receipt of that notice, which request shall specify the
Registrable Securities intended to be registered and disposed of by such Holder,
the Company shall, subject to the provisions hereof, use its commercially
reasonable efforts to include in such registration statement all Registrable
Securities that the Company has been so requested to register by such Holder.

         (b)  If, at any time after giving written notice of its intention to
register any securities and prior to the effective date of the registration
statement filed in connection with such registration, the Company shall
determine for any reason not to register or to delay registration of such
securities, the Company may, at its election, give written notice of such
determination to each Holder and upon giving that notice (i) in the case of a
determination not to register, the Company shall be relieved of its obligation
to register any Registrable Securities in connection with such registration (but
not from any obligation of the Company to pay the

                                       -2-

<PAGE>

Registration Expenses (as defined below) in connection therewith), without
prejudice; and (ii) in the case of a determination to delay registering, the
Company shall be permitted to delay registering any Registrable Securities for
the same period as the delay in registering such other securities.

         (c)  The Company shall pay all Registration Expenses in connection with
registration of Registrable Securities requested pursuant to this section 2.1.

         2.2  Underwriter "Cutbacks" in Piggyback Registrations. Anything in
              -------------------------------------------------
section 2.1 to the contrary notwithstanding, with respect to any registration
pursuant to which shares are registered pursuant to this section 2 that is being
effected by one or more underwriters, such underwriters shall be designated by
the Company and approved by a majority in interest of the Holders selling
Registrable Securities and Other Securities (which approval shall not be
unreasonably withheld), and if any managing underwriter for the public offering
contemplated by such registration advises the Company in writing that, in such
firm's good faith opinion, the inclusion of all Registrable Securities and Other
Securities proposed to be included in such registration would adversely affect
the offering and sale of all such securities, then all securities proposed to be
sold by the Company for its own account shall be included in such registration
to the extent possible and the number of Registrable Securities and Other
Securities proposed to be included in such registration shall be reduced pro
rata based upon the number of shares of Common Stock owned by each such Person
(other than the Company) and its affiliates (or that each such Person and its
affiliates have the right to acquire) at the time of such registration.

     3.  Registration Procedures. In connection with the registration of any
         -----------------------
Registrable Securities under the Securities Act as provided in section 2, the
Company shall as expeditiously as possible:

              (i)    prepare and file with the Commission the requisite
     registration statement to effect such registration and thereafter use its
     commercially reasonable efforts to cause such registration statement to
     become and remain effective (subject to clause (ii) below); provided,
     however, that the Company may discontinue any registration of its
     securities that are not Registrable Securities at any time prior to the
     effective date of the registration statement relating thereto;

              (ii)   prepare and file with the Commission such amendments and
     supplements to such registration statement and the prospectus used in
     connection therewith as may be necessary to keep such registration
     statement effective and to comply with the provisions of the Securities Act
     with respect to the disposition of all Registrable Securities covered by
     such registration statement for such period as shall be required for the
     disposition of all of such Registrable Securities; provided, however, that,
     the foregoing notwithstanding, the Company shall not be required under this
     item (ii) to maintain the effectiveness of any such registration statement
     for longer than 180 days, or such longer period beyond such 180 days (up to
     an aggregate of 270 days) as may be available without requiring the Company
     to file any financial statements as of a later date and for a later period
     than the financial statements that may have been required to maintain the
     effectiveness of the registration statement for the 180-day period;

              (iii)  furnish to the Holders such number of conformed copies
     of such registration statement and of each such amendment and supplement
     thereto (in each case

                                       -3-

<PAGE>

     including all exhibits), such number of copies of the prospectus contained
     in such registration statement (including each preliminary prospectus and
     any summary prospectus) and any other prospectus filed under Rule 424 under
     the Securities Act, in conformity with the requirements of the Securities
     Act, and such other documents, as the Holders may reasonably request from
     time to time;

              (iv)   use its commercially reasonable efforts (x) to register or
     qualify all Registrable Securities and other securities covered by such
     registration statement under such other securities or blue sky laws of such
     states of the United States of America where an exemption is not available
     and as the Holders shall reasonably request, (y) to keep such registration
     or qualification in effect for so long as such registration statement
     remains in effect, and (z) to take any other action that may reasonably be
     necessary or advisable to enable the Holders to consummate the disposition
     in such jurisdictions of the securities to be sold by the Holders, except
     that the Company shall not for any such purpose be required to qualify
     generally to do business as a foreign corporation in any jurisdiction
     wherein it would not, but for the requirements of this paragraph (iv), be
     obligated to be so qualified or to consent to general service of process in
     any such jurisdiction;

              (v)    use its commercially reasonable efforts to cause all
     Registrable Securities covered by such registration statement to be
     registered with or approved by such other federal or state governmental
     agencies or authorities as may be necessary in the opinion of counsel to
     the Company to consummate the disposition of such Registrable Securities in
     accordance with their intended method of disposition;

              (vi)   furnish to the Holders' underwriters, if any, (x) an
     opinion of counsel for the Company, and (y) a "comfort" letter signed by
     the independent public accountants who have certified the Company's
     financial statements included or incorporated by reference in such
     registration statement, each covering substantially the same matters with
     respect to such registration statement (and the prospectus included
     therein) and, in the case of the accountant's comfort letter, with respect
     to events subsequent to the date of such financial statements, as are
     customarily covered in opinions of issuer's counsel and in accountant's
     comfort letters delivered to the underwriters in underwritten public
     offerings of securities (and dated the dates such opinions and comfort
     letters are customarily dated);

              (vii)  immediately notify the Holders when a prospectus relating
     thereto is required to be delivered under the Securities Act, upon
     discovery that, or upon the happening of any event as a result of which,
     the prospectus included in such registration statement, as then in effect,
     includes an untrue statement of a material fact or omits to state any
     material fact required to be stated therein or necessary to make the
     statements therein not misleading, in the light of the circumstances under
     which they were made, and at the request of the Holders promptly prepare
     and furnish to them a reasonable number of copies of a supplement to or an
     amendment of such prospectus as may be necessary so that, as thereafter
     delivered to the purchasers of such securities, such prospectus shall not
     include an untrue statement of a material fact or omit to state a material
     fact required to be stated therein or necessary to make the statements
     therein not misleading in the light of the circumstances under which they
     were made;

                                       -4-

<PAGE>

              (viii)  otherwise use its commercially reasonable efforts to
     comply with all applicable rules and regulations of the Commission, and
     make available to its security holders, as soon as reasonably practicable,
     an earnings statement covering the period of at least 12 months, but not
     more than 18 months, beginning with the first full calendar month after the
     effective date of such registration statement, which earnings statement
     shall satisfy the provisions of section 11(a) of the Securities Act and
     Rule 158 promulgated thereunder, and promptly furnish the same to the
     Holders; and

              (ix)    provide and cause to be maintained a transfer agent and
     registrar (which, in each case, may be the Company) for all Registrable
     Securities covered by such registration statement from and after a date not
     later than the effective date of such registration.

         The Company may require the Holders to furnish the Company such
information regarding the Holders and the distribution of the Holders'
Registrable Securities as the Company may from time to time reasonably request
in writing, based on its reasonable belief that such information is required to
be disclosed in the Registration Statement pursuant to the Securities Act and
applicable State securities laws.

         Upon receipt of any notice from the Company of the happening of an
event of the kind described in item (vii) of this section 3, the Holders shall
forthwith discontinue their disposition of Registrable Securities pursuant to
the registration statement relating to such Registrable Securities until the
Holders' receipt of the copies of the supplemented or amended prospectus
contemplated by item (vii) and, if so directed by the Company, the Holders shall
deliver to the Company all copies, other than permanent file copies, then in the
Holders' possession, of the prospectus relating to such Registrable Securities
current at the time of receipt of such notice.

     4.  Underwritten Offerings.
         ----------------------

         4.1  Piggyback Underwritten Offerings. If the Company proposes to
              --------------------------------
register any of its securities under the Securities Act as contemplated by
section 2 and such securities are to be distributed by or through one or more
underwriters, the Company shall, subject to the provisions of section 2
(including, without limitation, the provisions of sections 2.2), if requested by
the Holders, arrange for such underwriters to include all the Registrable
Securities to be offered and sold by the Holders with and among the securities
of the Company to be distributed by such underwriters. The Holders shall become
a party to the underwriting agreement negotiated between the Company and such
underwriters and shall make all representations and warranties to and shall
enter into all agreements with the Company or the underwriters as shall be
reasonably requested of them including all representations and warranties
required by law, customarily given or reasonably requested of selling
shareholders by an underwriter in an underwritten public offering.

         4.2  Holdback Agreements.
              -------------------

         (a)  If the Company, in connection with an underwritten offering of
securities for its own account, at any time shall register shares of Common
Stock under the Securities Act for sale to the public (other than on Forms S-4
or S-8 or a shelf registration), the Holders shall not sell pursuant to an
effective registration statement, publicly make any short sale of, publicly

                                       -5-

<PAGE>

grant any option for the purchase of, or otherwise publicly dispose of any
Shares (other than those Shares included in such registration pursuant to
section 2) without the prior written consent of the managing underwriter for a
period required by the underwriters and designated by the Company, which period
shall begin not more than thirty (30) days prior to the effectiveness of the
registration statement pursuant to which such public offering shall be made and
shall last not more than one hundred eighty (180) days after the effective date
of such registration statement in the case of the Company's initial public
offering, or ninety (90) days after the effective date of such registration
statement in the case of any such other offering. The Company may legend and
impose stop transfer instructions on any certificate evidencing Registrable
Securities relating to the restrictions provided in this section 4.2.

         (b)  During the 15-day period prior to the effective date of any
registration statement of Registrable Securities pursuant to an underwritten
public offering and during the 90-day period beginning on that effective date,
the Company shall not (except as part of such registration) effect any public
sale or distribution of any of its equity securities or of any security
convertible into or exchangeable or exercisable for any equity security of the
Company (other than in connection with any employee stock option or other
benefit plan).

         4.3  Preparation; Reasonable Investigation. In connection with the
              -------------------------------------
preparation and filing of each registration statement under the Securities Act
pursuant to this agreement, the Company shall give the Holders, their
underwriters, if any, and their respective counsel and accountants the
opportunity to participate in the preparation of such registration statement,
each prospectus included therein or filed with the Commission, and each
amendment thereof or supplement thereto, and give each of them such access to
its books and records, such opportunities to discuss the business of the Company
with officers and the independent public accountants who have certified its
financial statements as shall be necessary, in the opinion of the Holders' and
such underwriters' respective counsel, to conduct a reasonable investigation
within the meaning of the Securities Act.

     5.  Indemnification.
         ---------------

         5.1  Indemnification by the Company. In the event of any registration
              ------------------------------
statement filed pursuant to section 2, the Company shall, and hereby does,
indemnify and hold harmless each of the Holders and each of their directors,
officers, partners, agents, attorneys, representatives and affiliates and each
other individual, group, partnership, corporation, business trust, joint stock
company, trust, unincorporated association, joint venture or other entity of
whatever nature ("Person") who participates as an underwriter in the offering or
sale of such securities and each other Person, if any, who controls any Holder
or any such underwriter within the meaning of the Securities Act (each of the
foregoing, a "Holder Indemnitee"), insofar as losses, claims, damages, or
liabilities (or actions or proceedings, whether commenced or threatened, in
respect thereof) arise out of or are based upon any untrue statement or alleged
untrue statement of any material fact contained in any such registration
statement, any preliminary prospectus, final prospectus, or summary prospectus
contained therein, or any amendment or supplement thereto, or any omission or
alleged omission to state therein a material fact required to be stated therein
or necessary to make the statements therein in light of the circumstances in
which they were made not misleading, and the Company shall reimburse each Holder
Indemnitee for any legal or any other fees, costs and expenses reasonably
incurred by them in connection with investigating or defending any such loss,
claim, liability, action or proceeding; provided, that the Company shall not be
liable in any such case to the extent that any

                                       -6-

<PAGE>

such loss, claim, damage, liability (or action or proceeding in respect thereof)
or expense arises out of or is based upon an untrue statement or omission made
in reliance upon and in conformity with information furnished to the Company by
or on behalf of a Holder or such underwriter, as the case may be, for use in the
preparation thereof; and provided, further, that the Company shall not be liable
to any Holder Indemnitee in any such case to the extent that any such loss,
claim, damage, liability (or action or proceeding in respect thereof) or expense
arises out of such Person's failure to send or give a copy of the final
prospectus, as the same may be then supplemented or amended, to the Person
asserting an untrue statement or alleged untrue statement or omission or alleged
omission at or prior to the written confirmation of the sale of Registrable
Securities to such Person if such statement or omission was corrected in such
final prospectus so long as such final prospectus, and any amendments or
supplements thereto, have been furnished to such underwriter or any Holder, as
applicable.

               5.2  Indemnification by the Holders. If any Registrable
                    ------------------------------
Securities are included in any registration statement, the Holders of such
Registrable Securities so registered shall, and hereby do, severally and not
jointly, indemnify and hold harmless (in the same manner and to the same extent
as set forth in section 5.1 above) the Company, and each director and officer of
the Company, and each other Person, if any, who controls the Company within the
meaning of the Securities Act, with respect to all losses, claims, damages,
expenses or liabilities ("Losses") to which the Company or such control person
becomes subject under the Securities Act, insofar as such Losses arise out of or
are based upon any untrue statement or alleged untrue statement of a material
fact contained in such registration statement, any preliminary prospectus, final
prospectus or summary prospectus contained therein, or any amendment or
supplement thereto, or an omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, if such statement or alleged statement or omission or
alleged omission was made in reliance upon and in conformity with written
information pertaining to such Holder and furnished to the Company by such
Holder for use in the preparation of such registration statement, preliminary
prospectus, final prospectus, summary prospectus, amendment or supplement,
provided, however, that no Holder shall have any liability under this section
6.2 for any amount in excess of the net proceeds actually received by such
Holder from the sale of the Registrable Securities included in such registration
statement.

               5.3  Notice of Claims, Etc.
                    ---------------------

               (a) Promptly after receipt by an indemnified party of notice of
the commencement of any action or proceeding involving a claim referred to in
sections 5.1 or 5.2, such indemnified party will, if a claim in respect thereof
is to be made against an indemnifying party, immediately give written notice to
the latter of the commencement of such action; provided, however, that the
failure of any indemnified party to give notice as provided herein shall not
relieve the indemnifying party of its indemnity obligations, except to the
extent that the indemnifying party is actually prejudiced by such failure to
give notice. In case any such action is brought against an indemnified party,
unless in the reasonable judgment of counsel for such indemnified party, a
conflict of interest between such indemnified and indemnifying parties may exist
in respect of such claim (in which case the indemnified party shall be entitled
to retain separate counsel as provided below), the indemnifying party shall be
entitled to participate in and to assume the defense thereof, jointly with any
other indemnifying party similarly notified to the extent that it may wish and
at any time, with counsel reasonably satisfactory to such indemnified party, and
after notice from the indemnifying party to such indemnified party of its
election so to

                                       -7-

<PAGE>

assume the defense thereof, the indemnifying party shall not be liable to
such indemnified party for any legal or other expenses subsequently incurred by
the indemnified party in connection with the defense thereof other than
reasonable costs related to the indemnified party's cooperation with the
indemnifying party provided, however, that (i) if the indemnifying party fails
to assume the defense of such claim after a reasonable time the indemnified
party may retain counsel to defend such claim and the reasonable fees and
expenses of such counsel shall be paid by the indemnifying party, (ii) the
indemnified party may, at its own expense, retain separate counsel to
participate in such defense, (iii) the indemnified party shall have the right to
employ separate counsel at the expense of the indemnifying party and to control
its own defense of such action, claim or proceeding if, in the reasonable
opinion of counsel to such indemnified party, a material conflict or potential
material conflict exists between the indemnified party and the indemnifying
party that would make such separate representation advisable, except that in no
event shall the indemnifying party be required to pay fees and expenses under
this section 6 for more than one separate firm of attorneys in any one legal
action or group of related legal actions.

               (b)  No indemnifying party shall be liable for any settlement of
any action or proceeding effected without its written consent, which consent
shall not be unreasonably withheld. No indemnifying party shall, without the
consent of the indemnified party, consent to entry of any judgment or enter into
any settlement that does not include as an unconditional term thereof the giving
by the claimant or plaintiff to such indemnified party of a release from all
liability in respect to such claim or litigation.

               5.4  Contribution. If indemnification shall for any reason be
                    ------------
held by a court to be unavailable to an indemnified party under section 5.1 or
section 5.2 in respect of any loss, claim, damage or liability, or any action in
respect thereof, then, in lieu of the amount paid or payable under section 5.1
or section 5.2, as applicable, the indemnified party and the indemnifying party
shall contribute to the aggregate losses, claims, damages and liabilities
(including legal or other expenses reasonably incurred in connection with
investigating the same), (i) in such proportion as is appropriate to reflect the
relative fault of the Company on the one hand and the Holders on the other hand
that resulted in such loss, claim, damage or liability, or action in respect
thereof, with respect to the statements or omissions that resulted in such loss,
claim, damage or liability, or action in respect thereof, as well as any other
relevant equitable considerations or (ii) if the allocation provided by item (i)
above is not permitted by applicable law, in such proportion as shall be
appropriate to reflect the relative benefits received by the Company on the one
hand and the Holders on the other provided, however, that no Holder shall have
any liability under this section 5.4 for any amount in excess of the net
proceeds actually received by such Holder from the sale of the Registrable
Securities included in such registration statement. No Person guilty of
fraudulent misrepresentation (within the meaning of the Securities Act) shall be
entitled to contribution from any Person who was not guilty of such

fraudulent misrepresentation. In addition, no Person shall be obligated to
contribute hereunder any amounts in payment for any settlement of any action or
claim, effected without such Person's consent, which consent shall not be
unreasonably withheld.

               5.5  Rule 144. With a view to making available the benefits of
                    --------
certain rules and regulations of the Commission that may at any time permit the
sale of the Registrable Securities to the public without registration, at all
times from and after 90 days following the effective date of the first
registration of the Company under the Securities Act of an offering of its
securities to the public, the Company shall:

                                       -8-

<PAGE>

               (a)  use its commercially reasonable efforts to facilitate the
sale of the Registrable Securities to the public, without registration under the
Securities Act, pursuant to Rule 144 promulgated under the Securities Act,
provided that this shall not require the Company to file reports under the
Securities Act and the Securities Exchange Act of 1934, or any similar federal
statute, and the rules and regulations of the Commission thereunder ("Exchange
Act"), at any time prior to the Company's being otherwise required to file such
reports;

               (b)  make and keep public information available, as those terms
are understood and defined in Rule 144 promulgated under the Securities Act at
all times after 90 days after the effective date of the first registration under
the Securities Act filed by the Company for an offering of its securities to the
general public;

               (c)  use its commercially reasonable efforts to then file with
the Commission in a timely manner all reports and other documents required of
the Company under the Securities Act and the Exchange Act; and

               (d)  deliver to the Holders, upon any Holder's request, a written
statement as to whe ther it has complied with the requirements of this section
5, a copy of the most recent annual or quarterly report of the Company filed
with the Commission or any stock exchange or self regulatory organization
registered under the Securities Exchange Act of 1934, and such other reports and
documents so filed as a Holder may reasonably request to avail itself of any
rule or regulation of the Commission allowing it to sell its Registrable
Securities without registration.

          6.   Representations and Warranties of the Company and the
               -----------------------------------------------------
Stockholder. The Company, on the one hand, and each of the Stockholders, on the
-----------
other hand, hereby represent and warrant to the other as set forth below (all of
such representations and warranties to survive the execution and delivery of
this agreement):

               (a)  Binding Effect. This agreement has been duly executed and
delivered by the Company or such Stockholder, as applicable, and constitutes the
legal, valid and binding obligation of such party enforceable against such party
in accordance with its terms, except as enforceability may be limited by
applicable bankruptcy, insolvency or other similar laws affecting the
enforcement of creditors' rights generally and by general principles of equity
relating to enforceability.

               (b)  Power; Authorization; Non-Contravention. Each of the Company
and such Stockholder, as applicable, has all power and authority to execute,
deliver and perform his, her or its obligations under this agreement. The
execution, delivery and performance by each of the Company or such Stockholder,
as applicable, of this agreement and the consummation of the transactions
contemplated hereby, (i) has been duly authorized by all necessary corporate or
limited liability company, and if required, stockholder action, as applicable,
on the part of or on behalf of such party and (ii) does not violate, contravene
the terms of, or exceed the authority grant under, any agreement, document or
instrument of or applicable to such party.

          7.   Miscellaneous.
               -------------

               (a)  Notices. All notices, instructions and other communications
                    -------
in connection with this agreement shall be in writing and may be given by (i)
fax (with evidence of receipt) followed by letter or other delivery, (ii)
personal delivery or (iii) by a nationally recognized

                                       -9-

<PAGE>

overnight courier in each case to the parties at the address of the Company as
follows, and at the address of the Stockholders as set forth on the signature
page to this agreement (or at such other address as the Company or the
Stockholders may specify):

               If to the Company:

               MedSource Technologies, Inc.
               110 Cheshire Lane, Suite 100
               Minneapolis, Minnesota 55447
               Telecopier No.: (612) 807-1235
               Attention: Chairman

               With a copy to:

               Jenkens & Gilchrist Parker Chapin LLP
               The Chrysler Building
               405 Lexington Avenue
               New York, New York  10174
               Telecopier No.: (212) 704-6288
               Attention: Edward R. Mandell

               If to a Stockholder, to the address of such Stockholder set forth
on a signature page below.

               (b)  No Waiver. No course of dealing and no delay on the part of
                    ---------
any party hereto in exercising any right, power or remedy conferred by this
agreement shall operate as a waiver thereof or otherwise prejudice such party's
rights, powers and remedies conferred by this agreement or shall preclude any
other or further exercise thereof or the exercise of any other right, power and
remedy.

               (c)  Binding Effect; Assignability. This agreement shall be
                    -----------------------------
binding upon and, except as otherwise provided herein, shall inure to the
benefit of the respective parties and their permitted successors and assigns.

               (d)  Severability. Any provision of this agreement that is
                    ------------
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction. To the extent permitted
by applicable law, the parties hereby waive any provision of law which renders
any provisions hereof prohibited or unenforceable in any respect.

               (e)  Modification. No term or provision of this agreement may be
                    ------------
amended, altered, modified, rescinded or terminated except upon the express
written consent of the party against whom the same is sought to be enforced.

               (f)  Law Governing. This agreement shall be governed by and
                    -------------
construed in accordance with the law of the state of Delaware, applicable to
agreements made and to be performed entirely in Delaware, without regard to the
principals of conflicts of law of such state.

                                       -10-

<PAGE>

               (g)  Amendment to Securities Laws. The Company (on the one hand)
                    ----------------------------
and the Stockholders (on the other hand) agree that any amendment to federal
securities laws (and regulations promulgated thereunder (and related
registration forms) and related state securities laws) shall not affect the
substantive registration requirements (and other obligations of the Company) set
forth in this agreement; and, following any such amendment, the Company shall
continue to be required to cause the registration of the Registrable Securities
(and pay all Registration Expenses and provide indemnification pursuant to
section 5.1) under the federal securities laws, as amended, in a manner
consistent with carrying out the intent and purposes of (and on terms as similar
as practicable as the terms set forth in) this agreement.

               (h)  Headings. All headings and captions in this agreement are
                    --------
for purposes of reference only and shall not be construed to limit or affect the
substance of this agreement.

               (i)  Entire Agreement. This agreement contains, and is intended
                    ----------------
as, a complete statement of all the terms of the arrangements between the
parties with respect to the matters provided for, supersedes any previous
agreements and understandings between the parties with respect to those matters
and cannot be changed or terminated orally.

                      [The next page is the signature page]

                                       -11-

<PAGE>

          The parties have executed and delivered this Registration Rights
Agreement as of the date first written above.


                                  MEDSOURCE TECHNOLOGIES, INC.



                                  By: /s/ DANIEL CROTEAU
                                      ------------------------------------------
                                  Name: Daniel Croteau
                                  Title: Vice President - Corporate Development

                 [Stockholder signatures begin on the next page]

                                       -12-

<PAGE>


                                   /s/
                                   --------------------------------------------
                                            Name: Richard Gerrish

                                   Address:

                                   7 Paddock Circle
                                   Tequesta, FL 33469
                                   Telecopier No.: (561) 746-0238




                                   /s/
                                   --------------------------------------------
                                            Name: Meredith Gerrish

                                   Address:

                                   7 Paddock Circle
                                   Tequesta, FL 33469
                                   Telecopier No.: (561) 746-0238


                                      S-2

         [MedSource Technologies, Inc. - Registration Rights Agreement
                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Rodney Peifer

                                   Address:

                                   7073 Buttercup Lane
                                   Doltewah, TN 37363
                                   Telecopier No.: (423) 344-2268


                                      S-2

         [MedSource Technologies, Inc. - Registration Rights Agreement
                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Bruce A. Nichols

                                   Address:

                                   9314 Ancient Oaks Drive
                                   Doltewah, TN 37363
                                   Telecopier No.: (423) 899-9220


                                      S-2

         [MedSource Technologies, Inc. - Registration Rights Agreement
                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Stanley L. Porter

                                   Address:

                                   1679 Co. Rd. 147
                                   Henagar, AL 35978
                                   Telecopier No.: (256) 657-5340


                                      S-2

         [MedSource Technologies, Inc. - Registration Rights Agreement
                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Jiles L. Dean, Jr.

                                   Address:

                                   852 Cave Springs Road
                                   Rising Fawn, GA 30738
                                   Telecopier No.: (706) 462-2618


                                      S-2

         [MedSource Technologies, Inc. - Registration Rights Agreement
                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Jay W. Brown

                                   Address:

                                   38 Autumn Drive
                                   Ringgold, GA 30736
                                   Telecopier No.: (706) 935-5531


                                      S-2

         [MedSource Technologies, Inc. - Registration Rights Agreement
                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Rodney D. Laney

                                   Address:





                                   Telecopier No.: (___) ___-_____


                                      S-2

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                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: John T. Riddle

                                   Address:

                                   1351 Highway 301
                                   Trenton, GA 30752
                                   Telecopier No.: (___) ___-____


                                      S-2

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                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Ronald B. Roth

                                   Address:

                                   9 Northfield Road
                                   Signal Mountain, TN 37377
                                   Telecopier No.: (423) 886-6711


                                      S-2

         [MedSource Technologies, Inc. - Registration Rights Agreement
                         - Stockholder Signature Page]

<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Lane Keith

                                   Address:

                                   8011 Rosemere Way
                                   Chattanooga, TN 37421
                                   Telecopier No.: (423) 892-3019


                                      S-2

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                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Lance Monroe

                                   Address:

                                   8903 Grey Mountain Drive
                                   Doltewah, TN 37363
                                   Telecopier No.: (423) 396-2817


                                      S-2

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<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Rudolph E. Carlson

                                   Address:





                                   Telecopier No.: (___) ___-____


                                      S-2

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                         - Stockholder Signature Page]

<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Roy Johnson

                                   Address:

                                   14 Hobby Drive
                                   Ridgefield, CT 06877
                                   Telecopier No.: (203) 438-6667


                                      S-2

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                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Gary Messangale

                                   Address:

                                   185 Slygo Road
                                   Trenton, GA 30752
                                   Telecopier No.: (706) 657-4602


                                      S-2

         [MedSource Technologies, Inc. - Registration Rights Agreement
                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Shannon Prince

                                   Address:

                                   454 Creek Rd.
                                   Wildwood, GA 30757
                                   Telecopier No.: (706) 657-5157


                                      S-2

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                         - Stockholder Signature Page]


<PAGE>

                                   /s/
                                   --------------------------------------------
                                            Name: Brenda Neimand

                                   Address:

                                   777 15th Street
                                   Boulder, CO 80302
                                   Telecopier No.: (303) 448-9559


                                      S-2

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                         - Stockholder Signature Page]


<PAGE>

                                   THE GENEVA COMPANIES, INC.


                                   By:
                                      -----------------------------------------
                                            Name: David Troob
                                            Title: Chairman and CEO

                                   Address:





                                   Telecopier No.: (___) ___-____

                                      S-2

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