News Release

Allison Transmission to Participate in 7th Annual J.P. Morgan Diversified Industries Conference

May 29, 2012 at 4:01 PM EDT

INDIANAPOLIS, May 29, 2012 /PRNewswire/ -- Allison Transmission Holdings, Inc. (NYSE: ALSN), the world's largest manufacturer of commercial duty fully-automatic transmissions and hybrid-propulsion systems, today announced that Lawrence E. Dewey Chairman, President and Chief Executive Officer and David S. Graziosi, Executive Vice President, Chief Financial Officer and Treasurer will be speaking at the 7th Annual J.P. Morgan Diversified Industries Conference on Tuesday, June 5 at 1:15 p.m. Eastern Time. The conference will be held at the J.P. Morgan Conference Center, 2nd Level Auditorium, located at 383 Madison Avenue at 47th Street in New York City.

The presentation materials will be available via a webcast on http://ir.allisontransmission.com/.  In addition, the presentation will be webcast in real-time and available to the public through the following website: http://jpmorgan.metameetings.com/webcasts/diversified12/directlink?ticker=ALSN. The webcasts will be available for three months after the conference.

About Allison Transmission

Allison Transmission is the world's largest manufacturer of fully-automatic transmissions for medium- and heavy-duty commercial vehicles, medium- and heavy-tactical U.S. military vehicles and hybrid-propulsion systems for transit buses. Allison transmissions are used in a variety of applications including on-highway trucks (distribution, refuse, construction, fire and emergency), buses (primarily school and transit), motor homes, off-highway vehicles and equipment (primarily energy and mining) and military vehicles (wheeled and tracked). Founded in 1915, the Allison business is headquartered in Indianapolis, Indiana, U.S.A. and employs approximately 2,800 people. Allison has manufacturing facilities and customization centers located in China, The Netherlands, Brazil, India and Hungary, with a global presence, serving customers in North America, Europe, Asia, Australia, South America and Africa. Allison also has more than 1,500 independent distributor and dealer locations worldwide. More information about Allison is available at www.allisontransmission.com.

SOURCE Allison Transmission Holdings, Inc.

Investor Relations, ir@allisontransmission.com, +1-317-242-0185, or Media Relations, media@allisontransmission.com, +1-317-242-5000