Wossner Piston Yamaha YFM400 Big Bear 00-12 Black/Green 5 ohms +-20%

5 ohms +-20%

Nitrile Elastomer wheel seals are specifically designed to keep out water and dirt whilethe rubber coated outside diameter creates an optimum seal at the hub

» 100% Waterproof & Breathable lining

Steel inner casing that is tightly coiled for low compression

Make sure your bike has the necessary power available to keep your bike running cool on slow

Wossner Piston Yamaha YFM400 Big Bear 00-12 Black/Green 5 ohms +-20%Wossner 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