Steel valve and exhaust spring kit Yamaha YZ450F (03-09) + WR450F (03-15) + YFZ450 / R (04-20) ProX

Valve and spring kit YZ450F (03-09) + WR450F (03-15) + YFZ450 / R (04-20) ProX

• To replace OEM valves and valve springs
• Nitrided steel valves for greater durability and less wear under extreme conditions
• Stronger valve springs for the additional weight of steel valves.
• Springs made of vanadium-chromium steel for improved performance and superior durability at high revolutions
• The kits contain a set of intake or exhaust valves plus a set of specially designed valve springs; they can be installed with OEM valve retainers, bases, and seals

Applications:

• GasGas EC 450 F 2013
• GasGas EC 450 F Racing 2014
• Yamaha WR 450 F (03-15)
• Yamaha YFZ 450 (04-09)
• Yamaha YFZ 450 R (09-20)
• Yamaha YZ 450 F (03-09)