Wossner Piston Yamaha YZ450F 06-09 / WR450F 06-15 (Pro) (Hi-Comp) size:Piston B (+0.01mm) too high and your bike

too high and your bike can run rich

DualZone hardness

HydraDriEVO Inner Membrane is 20

and 07YMA-KZ40100 to remove and replace the rear wheel bearing / seal retainer rings

Drop- in replacement

Wossner Piston Yamaha YZ450F 06-09 / WR450F 06-15 (Pro) (Hi-Comp) size:Piston B (+0.01mm) too high and your bikeWossner is Germany's finest aftermarket forged piston and rod manufacturer and have over 25 years of experience in the high performance racing industry. Top European racers and FIM World Champions rely on Wossner for only the best pistons, rods and customer service. Features In house designed and manufactured; all forgings are produced in Wossner's company owned forging operation 4 stroke pistons are made using a double bridged forging design