Cat Cams Uprated Single Valve Springs

Cat Cams Uprated Single Valve Springs for use with most after-market cams. Increases valve control at high RPM use and where cams of higher acceleration are used.

Gives approx 30kg on seat and 85kg at 12.5mm lift.  Use our spring shims for fine tuning seat pressure. 

Set of 16 springs to fit with standard retainers.

Choice of standard PAC heat treatment or in their 'Gold' treatment which gives better fatigue resistance.