FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS. BOLT ON RELIABLE BIG BORE POWER! 12.5:1 Wiseco forged piston. Wiseco hi temp piston rings. Cometic top end gasket kit.
Installation and break in instructions. This is a bolt on kit that requires no machining of any kind. All parts are new in the original packaging, and the original manufacturers' warranties apply. Please check your order thoroughly when receiving it. We recommend that this kit be installed by a qualified mechanic with experience working on these types of motors.Piston comes with specific instructions for setting the ring gap. If you do not follow these exactly your motor will fail. The item "TRX400EX TRX 400EX XR400 Big Bore Kit 89mm 440 Cylinder Top End Rebuild Kit Chai" is in sale since Wednesday, March 15, 2017. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components". The seller is "bpracingatv" and is located in Upland, California. This item can be shipped worldwide.