Seller notes

Brand New 440 Big Bore (89mm) Top End Rebuild Kit. Includes a new 89mm aftermarket cylinder. Includes a new 89mm Wiseco 11:1 piston kit (piston,rings,wrist pin,circlips).Includes a Namura top end gasket kit. Wiseco Pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life.Compatible with all OEM components. Fits: 1999-2008 Honda TRX400EX **All returns must be in original condition, new and unused (just lik...

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