A vehicle is described with a frame having a plurality of frame members.
An engine and a straddle seat are disposed on the frame, the straddle
seat accommodating a rider. A handlebar is disposed on the frame for
steering the vehicle. A front suspension with at least one front wheel is
disposed on the frame. A rear suspension is also disposed on the frame,
the rear suspension having a rear swing arm pivotally connected to the
frame and a shock absorber disposed between the frame and the rear swing
arm. At least one rear is wheel disposed on the rear swing arm. A
continuously variable transmission operatively connects the engine to the
rear wheel. The continuously variable transmission includes a housing
that acts as one of frame members.