Exhibit 99.1

Altra Holdings Reports 14% Sales Growth in Second Quarter 2012

Gross Margin Climbs to 29.8%; Operating Income Margin of 11.3%

BRAINTREE, Mass., July 27, 2012 — Altra Holdings, Inc. (Nasdaq: AIMC), a leading global supplier of electromechanical power transmission and motion control products, today announced unaudited financial results for the second quarter ended June 30, 2012.

Financial Highlights

Management Comments

“During the quarter, we performed well operationally and achieved several milestone events,” said Carl Christenson, President and CEO. “We grew revenue by 14%, including 3% growth excluding acquisitions, while increasing operating income by 11%. We also initiated our first-ever quarterly dividend and earlier this week announced our second quarterly dividend. We also announced our intention to partially redeem Altra’s 8.125% Notes. We generated $24.3 million in operating cash flow for the first half of the year as a result of strong working capital performance. We are also very excited about our recently announced acquisition of Brazil-based Lamiflex as part of our plan to acquire assets in key strategic regions that offer significant long-term growth profiles. ”

Business Outlook

“We are experiencing continuing strength across many of our end markets in North America and Asia and continue to take share by developing new products that are in direct alignment with customers’ needs,” said Christenson. “At the same time, as a result of the continued weakness in Europe we have accelerated our cost reduction and profit improvement plan across our European operations. We continue to expect to report year-over-year sales and profitability growth for full year 2012, but given the current economic conditions and uncertainty in Europe, and the expected negative effect of foreign currency translation on our revenue, we are revising our guidance for the remainder of the year.”

The Company currently is forecasting sales in the range of $720 to $735 million and non-GAAP adjusted diluted EPS of $1.35 to $1.45 for 2012. Altra expects its tax rate for the full year to be approximately 32.0%, before discrete items, capital expenditures in the range of $30 to $35 million, and depreciation and amortization in the range of $25 to $28 million.

The Company will host an investor conference call to discuss its unaudited second-quarter financial results today, July 27, 2012, at 9:00 AM ET. The public is invited to listen to the conference call by dialing (877) 407-8293 domestically or (201) 689-8349 for international access and asking to participate in the ALTRA conference call. A live webcast of the call will be available in the “Investor Relations” section of www.altramotion.com. Individuals may download charts that will be used during the call at www.altramotion.com under “Events & Presentations” in the “Investor Relations” section. The charts will be available after earnings are released. A replay of the recorded conference call will be available at the conclusion of the call on July 27, through midnight on August 3, 2012. To listen to the replay, dial (877) 660-6853 domestically or (201) 612-7415 for international access (dial account #364 then replay ID # 397796). A webcast replay also will be available at www.altramotion.com.

About Altra Holdings

Altra Holdings, Inc., through its wholly-owned subsidiary Altra Industrial Motion, Inc., is a leading multinational designer, producer and marketer of a wide range of electromechanical power transmission and motion control products. The company brings together strong brands covering over 40 product lines with production facilities in nine countries and sales coverage in over 70 countries. Our leading brands include Boston Gear, Warner Electric, TB Wood’s, Formsprag Clutch, Ameridrives Couplings, Industrial Clutch, Kilian Manufacturing, Marland Clutch, Nuttall Gear, Stieber Clutch, Wichita Clutch, Twiflex Limited, Bibby Transmissions, Matrix International, Inertia Dynamics, Huco Dynatork, Warner Linear, Bauer Gear Motor and Lamiflex.

* Discussion of Non-GAAP Financial Measures

As used in this release and the accompanying slides posted on the Company’s website, non-GAAP adjusted diluted earnings per share, non-GAAP adjusted income from operations and non-GAAP adjusted net income are each calculated using either net income or income from operations that excludes acquisition related costs, discrete tax items, amortization of inventory fair value adjustment, premium paid on the redemption of debt and other income or charges that management does not consider to be directly related to the Company’s core operating performance. Non-GAAP adjusted diluted earnings per share is calculated by dividing non-GAAP adjusted net income by GAAP weighted average shares outstanding (diluted). Non-GAAP free cash flow is calculated by deducting purchases of property, plant and equipment from new cash provided by operating activities.

Altra believes that the presentation of non-GAAP adjusted net income, non-GAAP adjusted income from operations, non-GAAP adjusted diluted earnings per share and non-GAAP free cash flow provides important supplemental information to management and investors regarding financial and business trends relating to the Company’s financial condition and results of operations.

Forward-Looking Statements

All statements, other than statements of historical fact included in this release are forward-looking statements, as that term is defined in the Private Securities Litigation Reform Act of 1995. These statements include, but are not limited to, any statement that may predict, forecast, indicate or imply future results, performance, achievements or events. Forward-looking statements can generally be identified by phrases such as “believes,” “expects,” “potential,” “continues,” “may,” “should,” “seeks,” “predicts,” “anticipates,” “intends,” “projects,” “estimates,” “plans,” “could,” “designed”, “should be,” and other similar expressions that denote expectations of future or conditional events rather than statements of fact. Forward-looking statements also may relate to strategies, plans and objectives for, and potential results of, future operations, financial results, financial condition, business prospects, growth strategy and liquidity, and are based upon financial data, market assumptions and management’s current business plans and beliefs or current estimates of future results or trends available only as of the time the statements are made, which may become out of date or incomplete. Forward-looking statements are inherently uncertain, and investors must recognize that events could differ significantly from our expectations. These statements include, but may not be limited to, the Company’s position regarding strength in its end markets and its taking of share from new products, the acceleration of cost reductions and profit improvement plans across its European operations, the Company’s expectations regarding year-over-year sales and profitability growth, the Company’s plan to acquire assets in key strategic regions that offer significant long-term growth profiles, the Company’s intention to partially redeem Altra’s 8.125% Notes, the negative effect of foreign currency translation on its revenue and the Company’s guidance for 2012 for sales, EPS, capital expenditures, depreciation and amortization, and tax rate.

In addition to the risks and uncertainties noted in this release, there are certain factors that could cause actual results to differ materially from those anticipated by some of the statements made. These include: (1) competitive pressures, (2) changes in economic conditions in the United States and abroad and the cyclical nature of our markets, (3) loss of distributors, (4) the ability to develop new products and respond to customer needs, (5) risks associated with international operations, including currency risks, (6) accuracy of estimated forecasts of OEM customers and the impact of the current global economic environment on our customers, (7) risks associated with a disruption to our supply chain, (8) fluctuations in the costs of raw materials used in our products, (9) product liability claims, (10) work stoppages and other labor issues, (11) changes in employment, environmental, tax and other laws and changes in the enforcement of laws, (12) loss of key management and other personnel, (13) changes in pension and retirement liabilities, (14) risks associated with compliance with environmental laws, (15) the ability to successfully execute, manage and integrate key acquisitions and mergers, (16) failure to obtain or protect intellectual property rights, (17) risks associated with impairment of goodwill or intangibles assets, (18) failure of operating equipment or information technology infrastructure, (19) risks associated with our debt leverage and operating covenants under our debt instruments, (20) risks associated with restrictions contained in our Senior Secured Notes and Convertible Notes, (21) risks associated with compliance with tax laws, (22) risks associated with the global recession and volatility and disruption in the global financial markets, (23) risks associated with implementation of our new ERP system, (24) risks associated with the Bauer acquisition and integration, (25) risks associated with the Company’s planned investment in a new manufacturing facility in China, and (26) other risks, uncertainties and other factors described in the Company’s quarterly reports on Form 10-Q and annual reports on Form 10-K and in the Company’s other filings with the U.S. Securities and Exchange Commission (SEC) or in materials incorporated therein by reference. Except as required by applicable law, Altra Holdings, Inc. does not intend to, update or alter its forward looking statements, whether as a result of new information, future events or otherwise. AIMC-E

Contact:

Altra Holdings, Inc.

Christian Storch, Chief Financial Officer

781-917-0541

Christian.storch@altramotion.com