Takegawa 106cc R-Stage +D SCUT bore kit for the CRF50 XR50 and 12V Monkey is the largest bore available without case or crank modification. Simple top end installation is all that is required. Skirtless piston combined with an all aluminum ceramic coated cylinder, R-Stage head with R-10 decompression camshaft and rockers, and complete top end gasket kit make this the most popular choice for performance under 110cc

• MFG rated power - 12.5HP with VM26 and proper setup
• high volume oil pump and clutch upgrade is recommended