Made of specially processed spring steel to ensure against breakage and fatigue. Increases valve tension without increasing seat pressure for maximum valve control up to 5500 RPM. Replaces original parts perfectly. A must for all high-performance engines. Shipped in sets of 8.

Installed height of 1.500" gives you @ 120 lbs. of seat pressure, and @ .500'' lift you have an open load of 220 lbs.