Add torque and horsepower to your DVX, Z, and KFX 400 without sacrificing availability. Availabe in 12.5:1 and 13.5:1 applications complete with a new piston kit, gasket set, and re-nicasiled cylinder. A "must have" for all racers and hard trail riders! This package will be sure to put you in the winners circle!

**NOTE: Kit looks stock from the outside!!

Fits DVX400 / Z400 / 400 KFX Models!