Allison Transmission Holdings, Inc. engages in the manufacture and distribution of vehicle propulsion solutions, which includes commercial-duty on-highway, off-highway and defense fully-automatic transmissions and electric-hybrid and fully-electric systems. The company solutions are used in applications, including on-highway trucks, buses, motorhomes, off-highway vehicles and equipment, and defense vehicles. Read More It also sell branded replacement parts, support equipment, aluminum die cast components and other products necessary to service the installed base of vehicles utilizing its solutions. The company was founded in 1915 and is headquartered in Indianapolis, IN.