Set of 8 high performance intake valves for the first of all the Ninjas - the Kawasaki GPZ 900R 1984-2003. This was a revolutionary motorcycle that became the immediate predecessor of the modern-day sport bike.
 
Made of the best grade stainless steel (EV8 / 21-4N) commonly used in all high performance valves used for racing or high strung engines (N/A, turbo or nitrous), these are a great improvement over the standard valves not only in flow but also in strength and heat resistance.
 
Valves are finished with durable black nitride coating to avoid stem wear and increase durability.
These valves have hardened valve tips (Stellite Tips).
 
Race Series is our new design that improves on our previous valves, 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 30,0 mm (1,0 mm oversize) and are designed to work with the original valve seat requiring only usual valve seat machining.
 
Oversize valves are a great way of increasing port flow for modified and big bore engines.
 
Oversize exhaust valves also available.