TRX400EX TRX 400EX 416 Big Bore Kit 87 mil Cylinder +2 Top End Rebuild Complete

• Works on all Honda 400EX 400X and XR400R models and years
• NEW after market 87mm cylinder
• Wiseco or Wossner 87mm forged piston
• Nitrite coated piston rings
• Chrome wristpin
• Circlips
• Cometic top end gasket kit
• MLS big bore head gasket
• Talon TITANIUM cylinder head stud kit - LIFETIME WARRANTY*
• HD cam chain conversion
• NGK spark plug
• Runs on pump or race gas
• No case or head mods required
• 1 year warranty*

**Returns: We accept returns for part or all of your order within the first 30 days.  Refunds are only granted for parts that are returned 100% complete, brand new, in the original packaging.  Once a part has been installed or prepped for installation it is no longer eligible for return.

**Warranty: This product is NOT DIY.  Over 99% of people in the world are not qualified to build an engine, and it is the responsibility of the person assembling and tuning the engine to make sure all the parts are correct and work properly.  We ALWAYS STRONGLY recommend work be done by a qualified, experienced mechanic.  For any warranty to be considered the part(s) in question must be sent back to us for inspection, NO EXCEPTIONS.  We cannot warranty anything based on photos, emails, phone calls, what you read online alone, or what another mechanic says the problem is alone. Warranty does not cover any failure that is a result of improper installation, tuning, break in, lack of maintenance, or misuse.