System for attaching accessories to a snowmobile

A snowmobile comprising:

• a frame including a tunnel configured to accommodate a drive track, the frame having frame length extending along a longitudinal axis of the snowmobile, and a frame width extending along a lateral axis of the snowmobile;
• a driver's seat supported by the frame;
• an accessory mounting surface defined by the frame over the tunnel at a location rearward of the driver's seat, the accessory mounting surface defining a first accessory mounting slot and a second accessory mounting slot, the first and second accessory mounting slots being parallel and having slot lengths that extend along the longitudinal axis, the first and second accessory mounting slots being separated from one another along the lateral axis;
• a first accessory mounting post secured to the frame at the first accessory mounting slot and a second accessory mounting post secured to the frame at the second accessory mounting slot, the first and second accessory mounting posts projecting upwardly from the accessory mounting surface;
• first and second tab receiving slots positioned forwardly with respect to the first and second accessory mounting slots, the first and second tab receiving slots being separated from one another along the lateral axis;
• and
• an accessory configured to be removably connected to the snowmobile behind the driver's seat, the accessory including forwardly projecting first and second mounting tabs at a front side of the accessory, the accessory also including first and second lock assemblies respectively at the left and right sides of the accessory, the first and second lock assemblies each defining a receptacle at a bottom side of the accessory, wherein when the accessory is mounted to the accessory mounting surface the first and second mounting tabs are respectively received within the first and second tab-receiving slots and the first and second accessory mounting posts are locked within the receptacles of the first and second lock assemblies.