Allison Transmission Holdings, Inc. is the largest producer of fully-automatic transmissions for medium and heavy-duty commercial and heavy-tactical U.S. defense vehicles.?The firm offers electric hybrid and fully electric propulsion systems. It serves On-Highway, Off-Highway end markets in/outside N. America. Within the On-Highway market, it serves fully-automatic transmissions, majorly catering class straight trucks, conventional transit, shuttle and coach buses, school buses and motorhomes. Its Off-highway market products serve in energy, mining and construction applications. It supplies transmissions for Joint Light Tactical Vehicle, Light Armored Vehicle, Stryker Armored Vehicle, Mine Resistant Ambush Protected Vehicle, Heavy Dump Truck, Heavy Equipment Transporters, etc. Its Service Parts, Support Equipment and Other end market comprises own-branded service parts and transmission fluids, aluminum die cast components, extended transmission coverage, royalties, saleable engineering and support equipment.