exv4w1

Exhibit 4.1

FORM OF 81/8% SENIOR SECURED NOTE DUE 2016
[Insert the Global Note Legend, if applicable pursuant to the provisions of the Indenture]

THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 2.06 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.06(a) OF THE INDENTURE, (3) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 2.11 OF THE INDENTURE AND (4) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY. UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR NOTES IN DEFINITIVE FORM, THIS NOTE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) (“DTC”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS MAY BE REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR SUCH OTHER ENTITY AS MAY BE REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

[Insert the Private Placement Legend, if applicable pursuant to the provisions of the Indenture]

THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY STATE SECURITIES LAWS. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, REGISTRATION. THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF (1) REPRESENTS THAT (A) IT IS A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) OR (B) IT IS A NON-U.S. PURCHASER AND IS ACQUIRING THIS SECURITY IN AN OFFSHORE TRANSACTION WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT AND IN ACCORDANCE WITH THE LAWS APPLICABLE TO SUCH PURCHASER IN THE JURISDICTION IN WHICH SUCH ACQUISITION IS MADE, AND (2) AGREES TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE (THE “RESALE RESTRICTION TERMINATION DATE”) WHICH IS ONE YEAR AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS SECURITY (OR ANY PREDECESSOR OF SUCH SECURITY) ONLY (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) FOR SO LONG AS THE SECURITIES ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A, TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHICH NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (C) TO AN INSTITUTIONAL INVESTOR THAT IS AN ACCREDITED INVESTOR WITHIN THE MEANING OF RULE 501 OF REGULATION D UNDER THE SECURITIES ACT IN A TRANSACTION EXEMPT FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES, (D) PURSUANT TO OFFERS AND SALES TO NON-U.S. PURCHASERS THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF

REGULATION S UNDER THE SECURITIES ACT, (E) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT, OR (F) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSE (C) (D) OR (F) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND IN EACH OF THE FOREGOING CASES, A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THE OTHER SIDE OF THIS SECURITY IS COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF THE HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

ALTRA HOLDINGS, INC.

81/8% SENIOR SECURED NOTES DUE 2016

CUSIP No. 02208R AA4

U.S.$207,090,000.00

Certificate No. 144A-1

Altra Holdings, Inc., a Delaware corporation (the “Company”) promises to pay to , or registered assigns, the principal sum of DOLLARS on December 1, 2016 and to pay interest thereon as hereinafter set forth.

Interest Rate: 81/8%

Interest Payment Dates: December 1 and June 1

Record Dates: November 15 and May 15

Reference is made to the further provisions of this Note contained on the reverse side of this Note, which will for all purposes have the same effect as if set forth at this place.

[Signature page follows.]

IN WITNESS WHEREOF, the Company has caused this Note to be signed manually or by facsimile by its duly authorized officer.

ALTRA HOLDINGS, INC.,
a Delaware corporation


	By:

Name:

Title:

Dated: , 20

TRUSTEE CERTIFICATE OF AUTHENTICATION

This is one of the 81/8% Senior Secured Notes due 2016 referred to in the within-mentioned Indenture.

THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee


	By:

Name:

Title:

Dated: , 20

(REVERSE OF SECURITY)

81/8% Senior Secured Notes due 2016

Capitalized terms used herein have the meanings assigned to them in the Indenture referred to below unless otherwise indicated.

1. Interest. Altra Holdings, Inc., a Delaware corporation (the “Company”), promises to pay interest on the principal amount of this Note at a rate of 81/8% per annum until maturity [and shall pay the Additional Interest, if any, payable pursuant to Section 4 of the Registration Rights Agreement referred to below]. The Company will pay interest [and Additional Interest, if any,] semi-annually in arrears on December 1 and June 1 of each year, or if any such day is not a Business Day, on the next succeeding Business Day (each, an “Interest Payment Date”). Interest on the Notes will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the date of issuance; provided that if there is no existing Default in the payment of interest, and if this Note is authenticated between a record date referred to on the face hereof and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date; provided further that the first Interest Payment Date shall be , 20 . The Company will pay interest on overdue principal and premium [and Additional Interest, if any,] from time to time on demand at a rate that is 1% per annum in excess of the rate then in effect to the extent lawful; it will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest [and Additional Interest, if any,] (without regard to any applicable grace periods) from time to time on demand at the same rate to the extent lawful. Interest will be computed on the basis of a 360-day year of twelve 30-day months.

2. Method of Payment. The Company will pay interest on the Notes [and Additional Interest, if any,] to the Persons who are registered Holders of Notes at the close of business on the November 15 or May 15 next preceding the Interest Payment Date, even if such Notes are canceled after such record date and on or before such Interest Payment Date, except as provided in Section 2.12 of the Indenture with respect to defaulted interest. The Notes will be payable as to principal, [and] premium [and Additional Interest, if any,] and interest at the office or agency of the Company maintained for such purpose within or without the City and State of New York, or, at the option of the Company, payment of interest [and Additional Interest, if any,] may be made by check mailed to the Holders at their addresses set forth in the register of Holders; provided that payment by wire transfer of immediately available funds will be required with respect to principal of and interest, [and] premium [and Additional Interest, if any,] on, all Global Notes and all other Notes the Holders of which will have provided wire transfer instructions to the Company or the Paying Agent. Such payment will be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

3. Paying Agent and Registrar. Initially, The Bank of New York Mellon Trust Company, N.A., the Trustee and Collateral Agent under the Indenture, will act as Paying Agent and Registrar. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company or any of its Subsidiaries may act in any such capacity.

4. Indenture. The Company issued the Notes under an Indenture dated as of November 25, 2009 (the “Indenture”) among the Company, the Guarantors and the Trustee and Collateral Agent. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the TIA. The Notes are subject to all such terms, and Holders are referred to the Indenture and the TIA for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling. The Notes are secured obligations of the Company. Each Holder, by accepting a Note, agrees to be bound by all of the terms and provisions of the Indenture, as the same may be amended from time to time.

5. Optional Redemption.

(a) At any time prior to December 1, 2012, the Company may on any one or more occasions redeem up to 35% of the aggregate principal amount of Notes issued under this Indenture at a redemption price equal to 108.125% of the principal amount of the Notes redeemed, plus accrued and unpaid interest [and Additional Interest, if any,] to the date of redemption (subject to the rights of Holders of Notes on the relevant regular record date to receive interest

due on the relevant interest payment date that is on or prior to the applicable date of redemption), with the net cash proceeds of an Equity Offering by the Company; provided that:

(A) at least 65% of the aggregate principal amount of Notes originally issued under this Indenture (excluding Notes held by the Company and its Subsidiaries and any Notes redeemed under Paragraph 5(c)) remains outstanding immediately after the occurrence of such redemption; and

(B) the redemption occurs within 90 days of the date of the closing of such Equity Offering by the Company.

(b) On or after December 1, 2012, the Company may on one or more occasions redeem all or a part of the Notes, upon not less than 30 nor more than 60 days’ notice, at the redemption prices (expressed as percentages of principal amount) set forth below, plus accrued and unpaid interest [and Additional Interest, if any,] on the Notes redeemed, to the applicable date of redemption, if redeemed during the twelve-month period beginning on December 1 of the years indicated below, subject to the rights of Holders of Notes on the relevant regular record date to receive interest due on the relevant interest payment date:


Year	Percentage

2012		106.094	%
2013		104.063	%
2014		102.031	%
2015 and thereafter		100.000	%

(c) During each twelve-month period ending on December 1, 2010, 2011 and 2012, the Company may redeem up to 10% of the originally issued principal amount of Notes, upon not less than 30 nor more than 60 days’ prior notice mailed by first-class mail to the registered address of each Holder of Notes or otherwise in accordance with the procedures of DTC, at a redemption price equal to 103% of the principal amount of the Notes redeemed and accrued and unpaid interest [and Additional Interest, if any,] to the redemption date, subject to the rights of Holders of Notes on the relevant record date to receive interest due on the relevant interest payment date.

(d) Notwithstanding the foregoing, at any time prior to December 1, 2012, the Company may also redeem all or a part of the Notes, upon not less than 30 nor more than 60 days’ notice, mailed by first-class mail to each Holder’s registered address, at a redemption price equal to 100% of the principal amount of the Notes redeemed plus the Applicable Premium as of, and accrued and unpaid interest [and Additional Interest, if any,] on the Notes redeemed, to the date of redemption, subject to the rights of Holders of Notes on the relevant record date to receive interest due on the relevant interest payment date.

(e) Except pursuant to Paragraphs 5(a),(c) and (d), the Notes will not be redeemable at the Company’s option prior to December 1, 2012.

(f) Unless the Company defaults in the payment of the redemption price, interest will cease to accrue on the Notes or portions thereof called for redemption on the applicable redemption date.

6. No Mandatory Redemption. The Company is not required to make mandatory redemption or sinking fund payments with respect to the Notes.

7. Repurchase at the Option of Holder.

(a) If there is a Change of Control, the Company will make an offer (a “Change of Control Offer”) to each Holder to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 thereof) of each Holder’s Notes at a purchase price in cash equal to 101% of the aggregate principal amount thereof plus accrued and unpaid interest [and Additional Interest, if any,] thereon to the date of purchase, subject to the rights of Holders on the relevant record date to receive interest due on the relevant interest payment date (the “Change of Control Payment”). Within 30 days following any Change of Control, the Company will mail a notice to each Holder describing the transaction or transactions that constitute the Change of Control and offering to repurchase Notes on the Change of Control Payment Date specified in the notice, which date will be no earlier than 30 days and no later than 60 days from the date such notice is mailed, pursuant to the procedures required by the Indenture and described in such notice.

(b) If the Company or a Restricted Subsidiary of the Company consummates any Asset Sales, within 30 days of each date on which the aggregate amount of Excess Proceeds exceeds $15.0 million, the Company will make an offer to all Holders of Notes and all holders of other Indebtedness that is pari passu with the Notes containing provisions similar to those set forth in the Indenture with respect to offers to purchase, prepay or redeem the maximum principal amount of notes and such other pari passu Indebtedness that may be purchased, prepaid or redeemed out of the Excess Proceeds (an “Asset Sale Offer”) pursuant to Section 3.09 of the Indenture to purchase the maximum principal amount of Notes and such other pari passu Indebtedness that may be purchased out of the Excess Proceeds at an offer price in cash in an amount equal to 100% of the principal amount thereof plus accrued and unpaid interest [and Additional Interest, if any,] thereon to the date of purchase, prepayment or redemption, in accordance with the procedures set forth in the Indenture. To the extent that the aggregate amount of Notes and other pari passu Indebtedness tendered pursuant to an Asset Sale Offer is less than the Excess Proceeds, the Company may use such remaining Excess Proceeds for any purpose not otherwise prohibited by the Indenture. If the aggregate principal amount of Notes and other pari passu Indebtedness tendered into such Asset Sale Offer exceeds the amount of Excess Proceeds, the Trustee shall select the Notes to be purchased on a pro rata basis. Holders of Notes that are the subject of an offer to purchase will receive an Asset Sale Offer from the Company prior to any related purchase date and may elect to have such Notes purchased by completing the form entitled “Option of Holder to Elect Purchase” attached to the Notes.

8. Security. The obligations of the Company and the Guarantors under the Notes and the Guarantees are secured by Liens on the Collateral pursuant to the terms of the Collateral Documents. The actions of the Trustee, the Collateral Agent and the Holders secured by such Liens and the application of proceeds from the enforcement of any remedies with respect to such Collateral are limited pursuant to the Collateral Documents.

9. Intercreditor Acknowledgment. The lien and security interest evidenced by this Note and the exercise of any right or remedy by any Holder in respect thereof is junior and subordinate to the interest of JPMorgan Chase Bank, N.A., individually and as Senior Agent and is subject to the provisions of that certain Intercreditor and Lien Subordination Agreement, dated as of November 25, 2009, as amended, supplemented, modified or replaced from time to time in accordance with the terms thereof among JPMorgan Chase Bank, N.A., as Senior Agent, The Bank of New York Mellon Trust Company, N.A., as Trustee and Collateral Agent, the Company, Altra Industrial Motion, Inc. and certain of the Company’s Subsidiaries.

10. Notice of Redemption. Notice of redemption will be mailed at least 30 days but not more than 60 days before the redemption date to each Holder of Notes to be redeemed at its registered address, except that redemption notices may be mailed more than 60 days prior to a redemption date if the notice is issued in connection with a defeasance of the Notes or a satisfaction or discharge of the Indenture. Notes and portions of Notes selected will be in minimum amounts of $2,000 and integral multiples of $1,000; except that if all of the Notes of a Holder are to be redeemed or purchased, the entire outstanding amount of Notes held by such Holder, even if not a multiple of $1,000, shall be redeemed or purchased.

11. Denominations, Transfer, Exchange. The Notes are in registered form without coupons in denominations of $2,000 and integral multiples of $1,000 in excess thereof. The transfer of Notes may be registered and Notes may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and the Company may require a Holder to pay any taxes and fees required by law or permitted by the Indenture. The Company need not exchange or register the transfer of any Note or portion of a Note selected for redemption, except for the unredeemed portion of any Note being redeemed in part. Also, the Company need not exchange or register the transfer of any Notes for a period of 15 days before a selection of Notes to be redeemed or during the period between a record date and the corresponding Interest Payment Date.

12. Persons Deemed Owners. The registered Holder of a Note may be treated as its owner for all purposes.

13. Amendment, Supplement and Waiver. Subject to certain exceptions, the Indenture, the Notes, the Note Guarantees, and the Collateral Documents (including, with the consent of the required lenders under the Credit Facilities, the Intercreditor Agreement) may be amended or supplemented with the consent of the Holders of at least a majority in aggregate principal amount of the Notes then outstanding (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes), and any existing Default or

Event or Default or compliance with any provision of the Indenture, the Notes and the Note Guarantees may be waived with the consent of the Holders of a majority in aggregate principal amount of the then outstanding Notes (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes). Any amendment to, or waiver of, the provisions of the Indenture or any Collateral Document that has the effect of releasing all or substantially all of the Collateral from the Liens securing the Notes will require the consent of the Holders of at least 662/3% in aggregate principal amount of the Notes then outstanding.

Without the consent of any Holder of a Note, the Indenture, the Notes or the Note Guarantees may be amended or supplemented (i) to cure any ambiguity, defect or inconsistency; (ii) to provide for uncertificated Notes in addition to or in place of certificated Notes; (iii) to provide for the assumption of the Company’s or a Guarantor’s obligations to Holders of Notes and Note Guarantees in the case of a merger or consolidation or sale of all or substantially all of the Company’s or such Guarantor’s assets, as applicable; (iv) to make any change that would provide any additional rights or benefits to the Holders of Notes or that does not adversely affect the legal rights under this Indenture of any such Holder; (v) to comply with requirements of the SEC in order to effect or maintain the qualification of this Indenture under the TIA; (vi) to conform the text of this Indenture, the Note Guarantees, the Collateral Documents or the Notes to any provision of the “Description of Notes” section of the Offering Memorandum to the extent that such provision was intended by the Company to be a verbatim recitation of a provision of this Indenture, the Note Guarantees, the Collateral Documents or the Notes, which intent shall be evidenced by an Officers’ Certificate to that effect; (vii) to enter into additional or supplemental Collateral Documents; (vii) to release Collateral in accordance with the terms of this Indenture and the Collateral Documents; (ix) to provide for the issuance of Additional Notes in accordance with the limitations set forth in this Indenture as of the date of this Indenture; or (x) to allow any Guarantor to execute a supplemental indenture and/or a Note Guarantee with respect to the Notes.

14. Defaults and Remedies. The Events of Default relating to the Notes are defined in Section 6.01 of the Indenture. In the case of an Event of Default arising from certain events of bankruptcy or insolvency, with respect to the Company, any Restricted Subsidiary of the Company that is a Significant Subsidiary or any group of Restricted Subsidiaries of the Company that, taken together, would constitute a Significant Subsidiary, all outstanding Notes will become due and payable immediately without further action or notice. If any other Event of Default occurs and is continuing and has not been waived in accordance with the terms of this Indenture, the Trustee or the Holders of at least 25% in aggregate principal amount of the then outstanding Notes may declare all the Notes to be due and payable immediately. Holders may not enforce the Indenture or the Notes except as provided in the Indenture. Subject to certain limitations, Holders of a majority in aggregate principal amount of the then outstanding Notes may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from Holders of the Notes notice of any continuing Default or Event of Default if it determines that withholding notice is in their interest, except a Default or Event of Default relating to the payment of principal or interest or premium [or Additional Interest, if any].

Holders of a majority in aggregate principal amount of the then outstanding Notes by notice to the Trustee may, on behalf of the Holders of all of the Notes, rescind an acceleration or waive any existing Default or Event of Default and its consequences under the Indenture, except a continuing Default or Event of Default in the payment of interest or premium [or Additional Interest, if any,] on, or the principal of, the Notes. Upon any such waiver, such Default shall cease to exist, and any Event of Default arising therefrom shall be deemed to have been cured for every purpose of the Indenture; but no such waiver shall extend to any subsequent or other Default or impair any right consequent thereon. The Company is required to deliver to the Trustee annually a statement regarding compliance with the Indenture, and the Company is required, upon becoming aware of any Default or Event of Default, to deliver to the Trustee a statement specifying such Default or Event of Default.

15. [Registration Rights. Pursuant to the Registration Rights Agreement, dated November 25, 2009 (the “Registration Rights Agreement”), among the Company, the Guarantors and the Initial Purchasers, the Company will be obligated to consummate an Exchange Offer. Upon such Exchange Offer, the Holders of Notes shall have the right, subject to compliance with securities laws, to exchange such Notes for Exchange Notes in like principal amount and having terms identical in all material respects to the Notes. The Holders of the Notes shall be entitled to receive certain Additional Interest in the event such exchange offer is not consummated and upon certain other conditions, all pursuant to and in accordance with the terms of the Registration Rights Agreement.]

16. Trustee Dealings with Company. The Trustee, in its individual or any other capacity, may make loans to, accept deposits from, and perform services for the Company or its Affiliates, and may otherwise deal with the Company or its Affiliates, as if it were not the Trustee.

17. No Recourse Against Others. A director, officer, employee, incorporator or stockholder or other owner of Capital Stock of the Company or any of the Guarantors, as such, will not have any liability for any obligations of the Company or the Guarantors under the Notes, the Note Guarantees or the Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for the issuance of the Notes.

18. Authentication. This Note will not be valid until authenticated by the manual signature of the Trustee or an authenticating agent.

19. Abbreviations. Customary abbreviations may be used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act).

20. Additional Rights of Holders of Restricted Global Notes and Restricted Definitive Notes. In addition to the rights provided to Holders of Notes under the Indenture, Holders of Restricted Global Notes and Restricted Definitive Notes will have all the rights set forth in the Registration Rights Agreement.

21. CUSIP Numbers. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP numbers to be printed on the Notes, and the Trustee may use CUSIP numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption, and reliance may be placed only on the other identification numbers placed thereon.

22. GOVERNING LAW. THE INTERNAL LAW OF THE STATE OF NEW YORK WILL GOVERN AND BE USED TO CONSTRUE THE INDENTURE, THIS NOTE AND THE NOTE GUARANTEES WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.

The Company will furnish to any Holder upon written request and without charge a copy of the Indenture and/or the Registration Rights Agreement. Requests may be made to:

Altra Holdings, Inc.

300 Granite Street, Suite 201

Braintree, Massachusetts, 02184

Attention: Glenn E. Deegan, Esq.

ASSIGNMENT FORM

If you the Holder want to assign this Note, fill in the form below and have your signature guaranteed:

I or we assign and transfer this Note to:

(Print or type assignee’s legal name, address and zip code and social security or tax ID number)

and irrevocably appoint to transfer this Note on the books of the Company. The agent may substitute another to act for him.


Dated: Signed:

(Sign exactly as your name appears on the other side of this Note)

Signature Guarantee*:

In connection with any transfer of this Note occurring prior to the date which is the earlier of (i) the date of the declaration by the SEC of the effectiveness of a registration statement under the U.S. Securities Act of 1933, as amended (the “Securities Act”), covering resales of this Note (which effectiveness shall not have been suspended or terminated at the date of the transfer) and (ii) , 20 , the undersigned confirms that it has not utilized any general solicitation or general advertising in connection with the transfer and that this Note is being transferred:

[Check One]

(1) to the Company or a subsidiary thereof; or

(2) pursuant to and in compliance with Rule 144A under the Securities Act; or

(3) to an institutional “accredited investor” (as defined in Rule 501(a)(1), (2), (3) or (7) under the Securities Act) that has furnished to the Trustee a signed letter containing certain representations and agreements (the form of which letter can be obtained from the Trustee); or

(4) outside the United States to a person other than a “U.S. person” in compliance with Rule 904 of Regulation S under the Securities Act; or

(5) pursuant to the exemption from registration provided by Rule 144 under the Securities Act.

Unless one of the boxes is checked, the Trustee will refuse to register any of the Notes evidenced by this certificate in the name of any person other than the registered Holder thereof; provided that if box (3), (4) or (5) is checked, the Company or the Trustee may require, prior to registering any such transfer of the Notes, in its sole discretion, such legal opinions, certifications (including an investment letter in the case of box (3) or (4)) and other information as the Trustee or the Company has reasonably requested to confirm that such transfer is being made pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act.

If none of the foregoing boxes is checked, the Trustee or Registrar shall not be obligated to register this Note in the name of any person other than the Holder hereof unless and until the conditions to any such transfer of registration set forth herein and in Section 2.06 of the Indenture shall have been satisfied.


Dated: Signed:	(Sign exactly as your name appears on the other side of this Note)

Signature Guarantee*:


*		Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

TO BE COMPLETED BY PURCHASER IF (2) ABOVE IS CHECKED

The undersigned represents and warrants that it is purchasing this Note for its own account or an account with respect to which it exercises sole investment discretion and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act and is aware that the sale to it is being made in reliance on Rule 144A and acknowledges that it has received such information regarding the Company as the undersigned has requested pursuant to Rule 144A or has determined not to request such information and that it is aware that the transferor is relying upon the undersigned’s foregoing representations in order to claim the exemption from registration provided by Rule 144A.

Dated:

NOTICE: To be executed by an executive officer

OPTION OF HOLDER TO ELECT PURCHASE

If you want to elect to have all or any part of this Note purchased by the Company pursuant to Section 4.10 or Section 4.15 of the Indenture, check the appropriate box:

o Section 4.10 o Section 4.15

If you want to have only part of the Note purchased by the Company pursuant to Section 4.10 or Section 4.15 of the Indenture, state the amount you elect to have purchased:


$

(multiple of $1,000)


	Date:	Your Signature:

(Sign exactly as your name appears on the other side of this Note)

Tax Identification No:

Signature Guarantee*:


*		Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

Schedule of Exchanges of Interests in the Global Note *

The following exchanges of a part of this Global Note for an interest in another Global Note or for a Definitive Note, or exchanges of a part of another Global Note or Definitive Note for an interest in this Global Note, have been made:

Principal Amount

of this Global Note

Signature of

Amount of Decrease

Amount of Increase

Following Such

Authorized Officer

in Principal Amount

Decreases or

of Trustee or

Date of Exchange

of this Global Note

Increases

Custodian


*		This schedule should be included only if the Note is issued in global form.