Set of 16 Titanium Retainers.
These are a direct replacement for the original steel retainers on the oil cooled shim style Suzuki GSXR
1991 / 1992 - GSXR 1100
1991 - GSXR750

Made of best grade titanium (grade 5)

The original retainers weight 9,2g and the titanium retainers weight 5,4g, 42% 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.
 
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