Document:

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                                                                   Exhibit 10.1b

                               Amendment No. 1 to
                       Redline Performance Products, Inc.
                             2000 Stock Option Plan

Section 3 of the Company's 2000 Stock Option Plan shall be amended to read as
follows:

"3.) Option Stock Available Under Plan.

      The Corporation's authorized Capital Stock in an amount equal to Seven
      Hundred Thousand (700,000) shares is hereby made available, and shall be
      reserved for issuance under this Plan. The aggregate number of shares
      available under this Plan shall be subject to adjustment on the occurrence
      of any of the events and in the manner set forth in Section 8. Except as
      provided in Section 8, in no event shall the number of shares reserved be
      reduced below the number of shares issuable upon exercise of outstanding
      Options. If an Option shall expire or terminate for any reason without
      having been exercised in full, the unpurchased shares, shall (unless the
      Plan shall have been terminated) become available for other Options under
      the Plan."<PAGE>

                                                                   Exhibit 10.19

                                  AMENDMENT TO
                                 LOAN AGREEMENT

      THIS AMENDMENT TO LOAN AGREEMENT is made and entered into as of this 30th
day of March 2004, by and between Redline Performance Products, Inc., a
Minnesota corporation, (hereinafter referred to as the "Borrower") with an
address of 1120 Wayzata, Boulevard East, Suite 200, Wayzata, MN 55391
(Borrower); and Community National Bank, a United States corporation, (Lender)
with an address of 5481 St. Croix Trail, North Branch, MN 55056.

      RECITALS:

      A. Borrower and Lender entered into a loan agreement dated November 26,
2003 ("Agreement"), which set forth the terms and conditions of a loan in the
original principal amount of Two Million and No/100ths Dollars ($2,000,000.00)
("Original Note") made by Lender to Borrower to be used in Borrower's business
of manufacturing snowmobiles. A loan agreement was executed by Borrower and
Lender in connection with the Loan ("Loan Agreement") and the parties hereto now
desire to amend the terms and conditions of the Loan Agreement.

      B. Borrower now desires to borrow and Lender has agreed to lend to
Borrower the additional sum of Five Hundred Thousand and NO/100ths Dollars
($500,000.00), ("Second Note").

      C. In order to induce Lender to make the Loan, Howard A. Dahl, Guarantor,
has agreed to guaranty the repayment of the Second Note.

      Now therefore, the parties hereto hereby agree as follows:

      1. Except as specifically modified hereby, the terms and conditions of the
Loan Agreement shall remain in full force and affect and shall apply to the
Second Note.

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      2. Borrower agrees to execute and delivery a Security Agreement in the
form provided herewith securing payment of the Second Note and such documents as
are necessary to create a security interest in Borrower's patents. Borrower
further agrees that all payments to be made pursuant to the contract by and
between Redline Performance Products, Inc. and GE Commercial Distribution
Finance Corporation effective as of October 10, 2003, (hereinafter referred to
as "GE Contract") shall be made to Lender until both the Original Note and
Second Note are paid in full and Borrower shall not direct those payments to any
other parties until such notes are paid in full. Borrower shall further provide
such loan documentation as Lender shall reasonably require.

      3. The minimum sales price to be obtained from each Unit shall be Ten
Thousand Three Hundred Forty and NO/100ths Dollars ($10,340.00).

      4. Advances of principal on the Second Note shall be made at the
reasonable discretion of the Lender and shall be made from time to time upon
application of Borrower as follows:

            (a)   Borrower shall provide all documentation
            required by any of the Loan Documents.

            (b)   Borrower shall not be in default on any of
            the terms or conditions of the Loan Documents.

      5. The repayment terms of the principal amount owing on the Original Note
shall be as set forth in the Amendment to Note executed herewith and are as
follows:

            a.    Three Thousand and No/100ths Dollars
            ($3,000.00) of the sales price from the sale of
            each of Units One (1) through Two Hundred (200);
            and

            b.    Seven Thousand and No/100ths Dollars
            ($7,000.00 from the sale of each of Units Two
            Hundred One (201) through Four Hundred (400).

<PAGE>

      6. The repayment of terms of the principal amount owing on the Second Note
shall be as set forth in the Second Note executed herewith and are as follows:

            a.    One Thousand and No/100ths Dollars
            ($1,000.00) from the sale of each of Units One
            Hundred One (101) through Two Hundred (200);

            b.    One Thousand Give Hundred and No/100ths
            Dollars ($1,500.00) from the sale of each of
            Units Two Hundred One (201) through Three
            Hundred (300);

            c.    Two Thousand Five Hundred and No/100ths
            Dollars ($2,500.00) from the sale of each of
            Units Three Hundred One (301) through Four
            Hundred (400); and

            d.    Three Thousand and No/100ths Dollars
            ($3,000.00) from the sale of each Unit after
            Four Hundred Units are sold until all amounts
            due and owing pursuant to this Promissory Note
            are paid in full.

      7. Borrower shall pay to Lender upon execution of this Agreement, an
origination fee equal to two (2) percent of the maximum proposed amount of the
Second Note.

      8. The parties agree that in the event of a default in the Loan Documents
and the foreclosure of either of the security interests created by the Security
Agreements executed by Borrower to secure the Original Note and/or the Second
Note, Lender shall apply the proceeds received from the sale of the Collateral
in accordance with the Collateral Proceeds Agreement executed by and among the
parties hereto, the guarantors of the Original Note and the Guarantor and dated
March 30, 2004.

      9. Lender and Borrower agree that they may not amend the terms and
conditions of any of the Loan Documents, including, but not limited to, the Loan
Agreement and the Second Note prior to the Second Note being paid in full as
required by the Guaranty of Howard A. Dahl executed herewith. The Lender and
Borrower further agree that they may not amend or alter the requirement that

<PAGE>

the payments made pursuant to the GE Contract are to be delivered directly to
the Lender prior to the Second Note being paid in full as required by the
guaranty of Howard A. Dahl executed herewith.

      This Amendment to Loan Agreement made and entered on this 30th day of
March, 2004.

                                         Redline Performance Products, Inc.

                                         By: /s/ Mark A. Payne
                                             ----------------------------------
                                         Mark A. Payne
                                         President & Chief Financial Officer

                                         Community National Bank

                                         By: /s/ Curtis A. Martinson
                                             -----------------------------------
                                         Curtis A. Martinson
                                         Executive Vice President<PAGE>

                                                                   Exhibit 10.20

                                 PROMISSORY NOTE
                               (MULTIPLE ADVANCE)

AMOUNT: $500,000.00                                         Date: March 30, 2004

      FOR VALUE RECEIVED, Redline Performance Products, Inc., a Minnesota
corporation, (hereinafter referred to as the "Borrower") with an address of 1120
Wayzata, Boulevard East, Suite 200, Wayzata, MN 55391, promises to pay to the
order of Community National Bank, a banking corporation organized and existing
under the laws of the United States (hereinafter referred to as the "Bank"), at
5481 St. Croix Trail, North Branch, Minnesota 55056 or at such other place as
the holder hereof may hereafter from time to time designate in writing, in
lawful money of the United States of America and in immediately available funds,
the principal sum of FIVE HUNDRED THOUSAND AND NO/100THS Dollars ($500,000.00),
or such amounts as may be advanced or re-advanced in the discretion of the BANK
and in accordance with the Loan Agreement **** as amended ***, together with
interest on the unpaid principal balance of this Promissory Note outstanding
from time to time, from the date hereof until this Promissory Note is fully paid
according to the terms hereof, at an annual rate that shall at all times be
equal to a fixed rate of nine percent (9%), computed on the basis of the actual
number of days elapsed in a 360 day year.

      Payments of interest only shall be made on this Promissory Note commending
on the 26th day of April, 2004, and shall continue on the same date of each
month thereafter until July 27, 2004, when all principal and unpaid interest
shall be due and payable in full as a BALLOON PAYMENT.

      Borrower shall make payments on the outstanding principal amount of the
Loan from the proceeds received from the sale of each snowmobile to be sold by
Borrower to a dealer located in the United States that has been approved by GE
Commercial Distribution Finance Corporation (hereinafter referred to as a
"Unit") as follows:

      a.          One Thousand and No/100 Dollars ($1,000.00) from the sale of
            each of Units One Hundred One (101) through Two Hundred (200);

<PAGE>

      b.          One Thousand Five Hundred and No/100ths Dollars ($1,500.00)
            from the sale of each of Units Two Hundred One (201) through Three
            Hundred (300);

      c.          Two Thousand Five Hundred and No/100ths Dollars $2,500.00)
            from the sale of each of Units Three Hundred One (301) through Four
            Hundred (400); and

      d.          Three Thousand and No/100ths Dollars ($3,000.00) from the sale
            of each Unit after Four Hundred Units are sold until all amounts due
            and owing pursuant to this Promissory Note are paid in full.

      This Promissory Note is secured by a security interest created by a
security agreement in the property of Borrower ("Security Agreement"). Payment
of this Promissory Note and performance of Borrower's obligations under the Loan
Documents are guaranteed by Howard A. Dahl ("Guaranty"), which Guaranty is
secured by a third party pledge of a certificate of deposit ("Third Party
Pledge"). The parties hereto have also entered a Loan Agreement ("Loan
Agreement"), and an assignment of proceeds between Borrower and GE Commercial
Distribution Finance Corporation ("Assignment") on the same day as this
Promissory Note. All of such documents are hereinafter referred to as the "Loan
Documents" and are incorporated herein by reference.

      If an event of default occurs in the terms of the Loan Documents, the
entire principal balance of this Promissory Note, with all accrued interest
thereon, shall, at the option of the Bank, then or at any time thereafter,
become immediately due and payable. Any failure of the Bank to exercise such
option to accelerate this Promissory Note at any time shall not constitute a
waiver of the right to exercise the same right to acceleration at any subsequent
time.

      Upon the event of default in the terms of this Note or the Loan Documents,
the Bank shall give notice in writing to the Borrower by mailing said notice by
U.S. Mail to the last known address of the Borrower advising them of the event
of default. In the event the default is not cured within thirty (30) days of
mailing of the notice, the Bank may proceed with such remedies as are allowed by
law, this Promissory Note and/or the Loan Documents.

<PAGE>

      In the event any payment is not made when due and is more than ten (10)
business days late, the Borrower shall pay a penalty in the amount of five
percent (5%) of the delinquent amount.

      If this Promissory Note is not paid when due, regardless of how such
maturity may be brought about, or is collected or attempted to be collected by
the initiation, prosecution or defense of any suit, in any district court,
probate, bankruptcy court or other judicial proceeding, or is placed in the
hands of an attorney for collection, then the Borrower shall pay in addition to
all other amounts owing hereunder all court costs and reasonable attorneys' fees
incurred by the holder hereof in connection therewith, including, but not
limited to, reasonable attorneys' fees for trial or for the pursuance of, or
defense of, any appellate procedure.

      This Promissory Note may be prepaid in whole or in part, at any time
without penalty or premium. All makers, endorsers, sureties, guarantors and
accommodation parties hereby waive presentment, dishonor, notice of dishonor and
protest, and consent to any and all extensions, renewals, substitutions and
alterations of any of the terms of this Promissory Note and any documents
related hereto, including the Loan Documents, and to the release of or failure
by the Bank to exercise any rights against any party liable for or any property
securing payment thereof.

      This Promissory Note shall be governed by and construed under the laws of
the State of Minnesota.

      THE BANK AND BORROWER HEREBY VOLUNTARILY, KNOWINGLY AND INTENTIONALLY
WAIVE ANY AND ALL RIGHTS TO TRIAL BY JURY IN ANY LEGAL ACTION OR PROCEEDING
ARISING UNDER THE LOAN DOCUMENTS OR CONCERNING THE INDEBTEDNESS EVIDENCED HEREBY
AND/OR ANY COLLATERAL SECURING SUCH INDEBTEDNESS, REGARDLESS OF WHETHER SUCH
ACTION OR PROCEEDING CONCERNS ANY CONTRACTUAL OR TORTIOUS OR OTHER CLAIM. THE
BORROWER ACKNOWLEDGES THAT THIS WAIVER OF JURY TRIAL IS A MATERIAL INDUCEMENT TO
THE LENDER IN EXTENDING CREDIT TO THE BORROWER, THAT THE LENDER WOULD NOT HAVE
EXTENDED SUCH CREDIT WITHOUT THIS JURY TRIAL WAIVER, AND THAT THE BORROWER HAS
BEEN REPRESENTED BY AN ATTORNEY OR HAS HAD AN OPPORTUNITY TO CONSULT

<PAGE>

WITH AN ATTORNEY IN CONNECTION WITH THIS JURY TRIAL WAIVER AND UNDERSTANDS THE
LEGAL EFFECT OF THIS WAIVER.

      This instrument executed the date and year set forth above.

                                         Redline Performance Products, Inc.

                                         By: /s/ Mark A. Payne
                                             ----------------------------------
                                         Mark A. Payne
                                         President & Chief Financial Officer

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