Two new factory crankcase kits from Takegawa for the CRF50 XR50 and Monkey bikes. Incorporating the highest volume direct drive oil pump system on the market, this engine case kit is redesigned with added bracing and is factory bored in two separate models for 106/138cc SCUT or 124cc displacements. An absolute must for high powered builds. These kits come with Takegawa original sand cast ignition cover.