Complete crankcase from Polini for MBK / Motobecane 51 mopeds. The kit is comprised of: crankcase halves (right and left), crankcase gasket and cylinder base gasket, 2x crankshaft bearings, 2x shaft seals, 2x inlets for 12-19mm carburetors, 1x reed block, 4x cylinder studs.


