04-05 Honda TRX450R 540cc Big Bore Kit

04-05 Honda TRX450R 540cc Big Bore Top End Rebuild Kit

-103mm CPI Cylinder
-103mm Custom 14:1 CP Piston
-103mm Cometic Top End Gasket Kit

This kit is for a good duner or drag race combination. This kit will work with all Stock Stroke Applications, and several stroker crankshaft options. We recommend using a Carrillo Rod Crankshaft with this top end kit. Head Porting, Camshafts, Intake and Exhaust Modifications, etc. are not required, but are highly recommended to get them most out of the engine combination. We also highly recommend ARP Head Studs with this kit to insure proper head gasket seal.

Crankcase Boring is required to Install Cylinder. We have brand new OEM Honda Crankcases available here with Optional Machine Work for this Cylinder. If you would like to have your Crankcases bored for Cylinder, Please Contact Us for a quote.