Brand new set of 8 Inner High-Rev Springs for increased RPM and Performance. Prevent engine damage due to valve float or worn out weak valve springs. Made from special silicone spring steel. They can be used as intake/exhaust springs in almost any VW Type 1 head casting. Also Used as custom springs in Type 4 Heads with 8mm Valves
Please note the is the Inner springs only they will not work by themselves.
***Machine Work Required for installing the Inner spring.***