UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

December 20, 2006
Date of report (Date of earliest event reported)

ALTRA HOLDINGS, INC.

(Exact Name of Registrant as Specified in Its Charter)

Delaware	001-33209	61-1478870
(State or Other Jurisdiction	(Commission	(IRS Employer
of Incorporation)	File Number)	Identification No.)
14 Hayward Street, Quincy, Massachusetts		02171
(Address of principal executive offices)		(Zip Code)

(617) 328-3300
(Registrant’s telephone number, including area code)

     Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

TABLE OF CONTENTS

EX-99.1 Press Release dated, December 20, 2006

Item 8.01 Other Events

     On December 20, 2006, Altra Holdings, Inc. (“Altra Holdings”), closed the initial public offering of shares of its common stock, par value $0.001 per share (the “Shares”). In the offering, Altra Holdings sold 3,333,334 Shares and certain selling stockholders, including Genstar Capital, Altra Holdings’ largest stockholder, sold an aggregate of 6,666,666 Shares. Certain selling stockholders have also granted the underwriters a 30-day option to purchase up to an additional 1,500,000 Shares at the initial public offering price to cover over-allotments, if any. The press release announcing the closing of the initial public offering is attached as Exhibit 99.1 to this Form 8-K and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.	Description
99.1	Press Release, dated December 20, 2006.

SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Altra Holdings, Inc.
By:	/s/ David Wall
	Name:	David Wall
	Title:	Chief Financial Officer

Date: December 20, 2006

EXHIBIT INDEX

Exhibit No.	Description
99.1	Press Release, dated December 20, 2006.