Allison Transmission’s 9000 Series is designed to match the most severe operating conditions and is used in applications requiring up to 1,939 kW (2,600 hp) such as oil field pumping, fracturing, off-highway trucks and winch units used on derricks and cranes. With up to eight available forward speeds (six speeds in hauling applications) and up to two reverse speeds for hauling applications, Allison’s 9000 Series is built to provide superior productivity and durability. The 9000 Series is also equipped with an optional hydraulic retarder, two Power Take-Off (PTO) provisions and an optional provision for customer- supplied parking brakes.