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                                                                   Exhibit 10.21

                            SECOND AMENDMENT TO THE
                              ALTRA HOLDINGS, INC.
                           2004 EQUITY INCENTIVE PLAN

     THIS SECOND AMENDMENT (this "Amendment") is entered into effective as of
           , 2006, to amend that certain 2004 Equity Incentive Plan (the "Plan")
of Altra Holdings, Inc., a Delaware Corporation (the "Company").

1.   Definitions. Capitalized terms not otherwise defined in this Amendment have
     the meaning given them in the Plan.

2.   Amendment of the Plan. Effective upon the date hereof, the Plan is amended
     as follows:

     2.1. Amendment of Section 2(b). Section 2(b) of the Plan is amended to read
          in its entirety as follows:

          "(b) Authority. The Committee is authorized, subject to the provisions
          of the Plan, to establish such rules as it deems necessary for the
          proper administration of the Plan and to make such determinations and
          interpretations in its sole discretion and to take such action in
          connection with the Plan and any awards granted hereunder as it deems
          necessary or advisable, including the right to accelerate the vesting
          or exerciseability of awards, establish the terms and conditions of
          awards, cancel awards upon a Change of Control and to correct any
          defect or supply any omission or reconcile any inconsistency in the
          Plan or in any option or other benefit granted under the Plan. All
          determinations and interpretations made by the Committee shall be
          binding and conclusive on all participants and their legal
          representatives."

     2.2. Amendment of Section 5(a). Section 5(a) of the Plan is amended to read
          in its entirety as follows:

          "(a) Maximum Shares. The aggregate number of shares of common stock of
          the Company par value $0.001 ("Shares") that may be issued under this
          Plan shall be Six Million Eight Thousand Five Hundred Twelve
          (6,008,512) Shares, which may be authorized and unissued or treasury
          Shares, subject to Section 5(c) hereof and Section 13 hereof ("Maximum
          Shares"). The maximum number of shares that may be "incentive stock
          options", within the meaning of Section 422 of the Code, is 3,500,000
          shares (the "ISO Maximum"). The maximum number of shares that may be
          any type of stock option under the plan shall be 4,000,000 shares."

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     2.3. Amendment of Section 6(b). Section 6(b) of the Plan is amended to read
          in its entirety as follows:

          "(b) Exercise Price. Each stock option granted hereunder shall have a
          per Share exercise price of not less than the fair market value (as
          defined in Section 17 of the Plan) of a Share on the date of grant."

     2.4. Amendment of Section 7(b). Section 7(b) of the Plan is amended to read
          in its entirety as follows:

          "(b) Grant Price. The grant price per Share referenced in a stock
          appreciation right shall not be less than the fair market value (as
          defined in Section 17 of the Plan) of a Share on the date of grant."

     2.5. Amendment of Section 13(b). Section 13(b) of the Plan is amended to
          read in its entirety as follows:

          "(b) Modification of Awards. In the event of any change or
          distribution described in subsection (a) above, in order to prevent
          dilution or enlargement of participants' rights under the Plan, the
          Committee shall have authority to adjust, in an equitable manner, the
          number and kind of shares that may be issued under the Plan, the
          number and kind of shares subject to outstanding awards, the exercise
          price applicable to outstanding awards, and the fair market value of
          the common stock and other value determinations applicable to
          outstanding awards; provided, however, that any such arithmetic
          adjustment to a performance-based award shall not cause the amount of
          compensation payable thereunder to be increased from what otherwise
          would have been due upon attainment of the unadjusted award.
          Appropriate adjustments may also be made by the Committee in the terms
          of any awards under the Plan to reflect such changes or distributions
          and to modify any other terms of outstanding awards on an equitable
          basis, including modifications of performance targets and changes in
          the length of performance periods; provided, however, that any such
          arithmetic adjustment to a performance-based award shall not cause the
          amount of compensation payable thereunder to be increased from what
          otherwise would have been due upon attainment of the unadjusted award.
          In addition, other than with respect to stock options, stock
          appreciation rights, and other awards intended to constitute
          performance-based awards, the Committee is authorized to make
          adjustments to the terms and conditions of, and the criteria included
          in, awards in recognition of unusual or nonrecurring events affecting
          the Company or the financial statements of the Company, or in response
          to changes in applicable laws, regulations, or accounting principles."

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     2.6. Amendment of Section 13(c). Section 13(c) of the Plan is amended by
          the addition of the following sentence to the end of the section:

          "In the event that a payment or delivery of an award following a
          Change of Control would not be a permissible distribution event, as
          defined in Section 409A(a)(2) of the Code or any regulations or other
          guidance issued thereunder, then the payment or delivery shall be made
          on the earlier of (i) the date of payment or delivery originally
          provided for such benefit, or (ii) the date of termination of the
          participant's employment or service with the Company or six months
          after such termination in the case of a "specified employee" as
          defined in Section 409A(a)(2)(B)(i) of the Code."

     2.7. Amendment of Section 17. Section 17 of the Plan is amended to read in
          its entirety as follows:

          "FAIR MARKET VALUE. For purposes of this Plan and any awards awarded
          hereunder, fair market value per Share as of a particular date shall
          mean (i) if shares are then listed on a national stock exchange, the
          closing price per Share on the date the option is granted, as
          determined by the Committee, (ii) if shares are not then listed on a
          national stock exchange but are then traded on an over-the-counter
          market, the average of the closing bid and asked prices for such
          shares in such over-the-counter market for the last preceding date on
          which there was a sale of such shares in such market, as determined by
          the Committee, or (iii) if shares are not then listed on a national
          exchange or traded on an over-the-counter market, such value as the
          Committee in its discretion may in good faith determine; provided
          that, where such shares are so listed or traded, the Committee may
          make discretionary determinations where the shares have not been
          traded for 10 trading days."

3.   No Other Amendments. Except as modified by Section 2 above, the Plan shall
     continue in full force and effect.

4.   Governing Law. This Amendment and any claims related to the subject matter
     hereof shall be governed by and construed in accordance with the laws of
     the State of Delaware (regardless of the law that might otherwise govern
     under applicable Delaware principles of conflict of laws).

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                                                                   EXHIBIT 10.22

                    FIRST AMENDMENT TO EMPLOYMENT AGREEMENT

      THIS FIRST AMENDMENT (this "AMENDMENT"), dated as of           , to
that certain Employment Agreement, dated as of January 6, 2005 (the "EMPLOYMENT
AGREEMENT"), by and among Altra Holdings, Inc., a Delaware Corporation
("HOLDINGS"), Altra - Industrial Motion, Inc., a Delaware corporation and
wholly-owned subsidiary of Holdings (the "COMPANY"), and Michael L. Hurt
("EXECUTIVE").

                                   WITNESSETH:

      WHEREAS, Holdings, the Company and Executive desire to amend the terms of
the Employment Agreement.

      NOW, THEREFORE, in consideration of the premises and the mutual agreements
herein set forth, the parties hereby agree as follows:

      1. Amendment to Section 3. Section 3 of the Employment Agreement is hereby
amended and restated as follows:

3. Term; Termination. The Employment Period shall terminate on the third
anniversary of the Effective Date ("INITIAL TERM") and shall automatically renew
for periods of one (1) year unless one party gives written notice to the other
at least six (6) months prior to the end of the Initial Term, or at least six
(6) months prior to the end of any one (1) year renewal period that the
Agreement shall not be further extended. The date on which the Employment Period
terminates after any notice of non-renewal is referred to herein as the
"EXPIRATION DATE." Notwithstanding the foregoing, the Company and Executive
agree that Executive is an "at-will" employee, subject only to the contractual
rights upon termination set forth herein, and that the Employment Period (a)
shall terminate automatically at any time upon Executive's death, (b) shall
terminate automatically at any time upon the Board's determination of
Executive's Disability, (c) may be terminated by the Company at any time for any
reason or no reason (whether for Cause or without Cause) by giving Executive
written notice of the termination, and (d) may be terminated by Executive for
any reason or no reason (including for Good Reason) by giving the Company
written notice at least sixty (60) days in advance of his termination date.
Notwithstanding anything herein to the contrary, in no event shall delivery of a
notice of non-renewal by the Company be deemed a termination without Cause. The
date that the Employment Period is terminated for any reason is referred to
herein as the "TERMINATION DATE."

      2. Continuing Effect. The Employment Agreement, except as amended hereby,
shall be and remain in full force and effect.

      3. Counterparts. This Amendment may be executed in any number of
counterparts and each of such counterparts shall for all purposes be deemed an
original, and all such counterparts shall together constitute but one and the
same instrument. Signature pages delivered by facsimile shall be binding to the
same extent as an original.

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      IN WITNESS WHEREOF, the parties hereto have executed this Amendment on the
date first written above.

                                ALTRA INDUSTRIAL MOTION, INC.

                                By: ____________________________
                                Name: Carl Christenson
                                Title: President and Chief Operating Officer

                                ALTRA HOLDINGS, INC.

                                By: ____________________________
                                Name: Carl Christenson
                                Title: President and Chief Operating Officer

                                EXECUTIVE

                                ________________________________
                                Michael L. Hurt

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