FITS ALL HONDA TRX400EX, 400X, AND XR400R MODELS AND YEARS

• New after-market cylinder head – NO VALVES OR SPRINGS HEAD ONLY
• Aftermarket cylinder head valve cover
• 87mm after-market big bore cylinder
• Wiseco JE or CP forged piston**
• Hi-temp piston rings
• Wristpin
• Circlips
• Top-end gasket kit
• Head stud kit
• Timing/cam chain
• Stickers

Head works with all OEM or after market components. Piston uses pump or race gas. Works with stock or after-market valve springs. Everything is brand new.