Intake valves and springs kit Yamaha YFZ-R

Replace the original valves and valve springs
Nitrided steel valves for greater durability and less wear in extreme conditions
Stronger valve springs support the additional weight of the steel valves
Springs are made of premium chrome-vanadium steel for better performance and durability at high rpm
The kit includes a set of steel intake or exhaust valves and a set of specially designed valve springs; it can be installed using the original valve cups, bases, and seals