Allison Transmission Holdings Inc. is a leading designer, manufacturer, and seller of fully automatic transmissions and electrified propulsion systems for medium- and heavy-duty commercial vehicles, off-highway equipment, and tactical defense vehicles worldwide. The company specializes in transmissions for applications including on-highway trucks in distribution, refuse, construction, fire, and emergency services; school and transit buses; motor homes; energy, mining, and construction equipment; and wheeled and tracked military vehicles. It also provides hybrid propulsion systems and is advancing electric powertrains for commercial and defense uses. Key product lines feature the 4000 Series for heavy-duty operations, 3000 Series for medium-duty trucks and buses, Rugged Duty Series for demanding environments, and cross-drive transmissions for combat vehicles. Allison Transmission Holdings Inc. recently integrated the Off-Highway Drive & Motion Systems business, expanding capabilities in infrastructure, mining, energy, agriculture, construction, and national security sectors. With a global service network supporting operations in over 80 countries, the company maintains strong partnerships with OEMs for propulsion solutions. Founded in 2007 and headquartered in Indianapolis, Indiana, it holds significant market share in automatic transmissions for these segments.