06+ TRX450R 468cc Big Bore Top End Kit.
Includes:
-Boring and Plating Core OEM Cylinder
-98mm CP Piston (12.5:1 3-ring or 13.5:1 2-ring available)
-98mm Cometic Top End Gasket Kit
Requires OEM Cylinder Core. There is a refundable $100 core charge for this kit. New OEM Cylinders are also available.