Set of 8 high performance intake valves (25 mm stock diameter) for the Yamaha YZF-R6 (1999 to 2005).
 
Perfect replacement for your worn out stock valves - ready to install.
 
Made of the best grade stainless steel (EV8 / 21-4N) commonly found in high performance valves used for racing or modified engines (N/A, turbo or nitrous), these are a great improvement over the standard valves in strength and heat resistance.
 
These valves are finished with a durable black nitride coating to avoid stem wear and increase durability. These valves also have hardened valve tips.
 
Race Series is our new design with a 30º Back Cut to improve airflow and smooth the transition to the seat area as well as other improvements aimed at saving weight by optimizing valve dimensions.
 
These valves are 25 mm (stock OEM size).
 
We also have oversize intake valves (+1mm) and stock exhaust valves for this model. See our other listings.