Patent ID: 8919477

Claim:
A snowmobile comprising: a frame; a front suspension operably coupled to the frame; a first ski operably coupled to the front suspension; a second ski operably coupled to the front suspension; an engine supported by the frame; a clutch assembly rotatably coupled to the engine; and a low-inertia power train unit, including a belt drive assembly operably coupled to the clutch assembly and including a belt, a first sprocket, and a second sprocket, the first sprocket rotatably coupled to the clutch assembly and the second sprocket operably coupled to the first sprocket; a jackshaft operably coupled to the clutch assembly at a first end and coupled to the first sprocket at a second end of the jackshaft; and a substantially hollow drive shaft having the second sprocket coupled to an end thereof, with the belt coupling the first and second sprockets.