Naraku HD FKM Crank Bearing & Seal Kit for Piaggio AC / LC 2T 50cc. Heavy Duty (HD) crankshaft bearing set from Naraku, supplied with Japanese NTN bearings and FKM premium crankshaft seal rings. This product is suitable for the Aprilia SR 50 LC 10-13 (Piaggio Motor Carb) [ZD4VFB/ VFD/VFU00/ VFJ/ VZ000].