Set of 8 high performance exhaust valves for the first generation Suzuki Hayabusa GSX1300R (1999-2007).
 
Also fit Hayabusa Gen 2 and Gen 3 - the difference is the OEM Valves are Titanium and ours are Stainless Steel. It is very common change them to SS in turbocharged and nitrous engines.
 
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.
 
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 28,5 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.
 
We also have stock exhaust valves (27,5) and intake valves (both stock and oversize) also available.