GP290 40mm Crankcase w/Bearings

Chung Yang 40mm boss crankcase. This is the stock crankcase on the current version of the GP290 Engine. Includes bearings and seals, crank bolts and crank gasket. Fits new-style GP290 engine only (or, any engine that uses the GP290 40mm boss top end, our part # ca378)

Note: Requires 40mm boss top end for use!