Set of 16 titanium retainers that are are a direct replacement for the original steel retainers on:
GSXR750 from 1988 to 1990 (Oil cooled, rocker arm) - DOT / Slingshot Head
This DOT Head was also found in Katana 750's

Made of grade 5 titanium and finished with durable black nitride to avoid valve spring wear and increase durability.

The original retainers weight 8,6g and the titanium retainers weight 4,9g - 45% lighter.

These retainers have a smaller profile/height to allow for more valve lift without contact with oil seal and without requiring valve guide modifications.

Using lightweight titanium retainers allows for more aggressive camshaft profiles (lift and duration) without losing control of the valve and increased rpm limits - a must for any performance / race engine