16 Stock Diameter Valves + 16 Titanium Retainers

Set of 16 high performance valves and titanium retainers for the 4 valve Honda CB900F Boldor, CB1100F and CB1100R

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 strenght and heat resistance.

Valves are finished with durable black nitride coating to avoid stem wear and increase durability. These valves have hardened valve tips

Intake valves are 26mm (stock oversize) and Exhaust valves are 22,5mm (stock diameter).

16 Retainers made of best grade titanium (Grade 5).

The original retainers weight 7,4g and the titanium retainers weight 4,5g, 40% lighter.
These retainers have a smaller profile/height (0,5mm shorter) to allow for more valve lift without contact with oil seal and without requiring valve guide modifications.
 
Perfect for higher redline and more agressive camshafts.