TB Stroker Crankshaft, 51mm 6v – Various 3 & 4 Speed Models Bike Protection less fuel off and around

less fuel off and around idle

Smooth underside won't snag when crossing logs

Add the high compression 52mm bore kit with the 51mm stroker crank that brings up the bore to 108cc and makes for a strong power band

*DUE TO THIS PRODUCT BEING USED AS A RACE ITEM

Includes high performance BBR MX Grind camshaft

TB Stroker Crankshaft, 51mm 6v – Various 3 & 4 Speed Models Bike Protection less fuel off and aroundTB Stroker Crankshaft, 51mm 6v Various 3 & 4 Speed Models Replacement TB 51mm Stroker Crankshaft 6v Type with long rod for 3 and 4 speed models. Note: Only for use with 4 speed CT70H, SL70, and XL70. Also for 81 & up ATC70 and 3 speed 80 81 CT70 Must use compatible TB Parts piston.