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Yamaha YZ450f +2023 Big Bore kit 102mm 500cc YZ500f withCylinder, Piston, Gaskets
This is a complete kit including everything needed to bolt on a 500cc big bore kit for a YZ450f dirt bike with the 2023 and newer engines. Complete bolt on kit includes a 102mm cylinder, JE 102mm Light Weight Piston kit, and Cometic gaskets. Custom designed piston is a light weight design, with 14.5:1 compression, and built in clearances for big valves, big cams, and stroker cranks.
Cometic gasket kit includes head and base gaskets. (always check all clearances during assembly to ensure proper specs due to factory variances). Bolts on with no case modification. Great option to fix damaged stock cylinders. We have big injectors, tuning maps tips and tricks to get you up and ripping!!