Set of 8 high performance exhaust valves (25,5 mm stock diameter) for the Kawasaki ZX-10R 2004 - 2007.
 
The original valves are made of titanium but our valves are 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 durability and heat resistance but they are heavier.
 
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 25,5 mm (stock OEM size).
 
We also have stock exhaust valves for this model. See our other listings.