Wossner Piston Yamaha YFM450 Grizzly '07-'11 84.45mm crossfire The first is a zip-up

The first is a zip-up compression sock with soft impact protectors for the shoulders and elbows then the second is a full CE Certified chest and back protector that goes over the top

High-performa nce certification ECE 22

Density 15 °C: 1

Stiction (friction) measures from 1/3 to 1/2 less than OEM seals for smoother fork action

Wossner Piston Yamaha YFM450 Grizzly '07-'11 84.45mm crossfire The first is a zip-upWossner 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