Skunk2 PRO Valve Springs Retainers Prelude H22A F20B

Skunk2 Pro-Series valve springs are the best valve springs on the sport compact market. Skunk2 Racing Pro-Series valve springs are designed to handle the demands of extreme lift camshafts running at the prolonged high rpms of professional championship level racing. The Skunk2 Racing Pro-Series valves springs have been tested for use up to 11,000 rpm. The Japanese milled super clean chrome silicone wire is 100% eddy-current inspected before coiling. After the spring is coiled, it is heat treated, shot-peened, and further enhanced with an advanced proprietary chemical polishing and nitride process. The end result is a lightweight valve spring that will safely accommodate high lifts and has superior resistance to load loss even under extreme operating conditions. This type of performance is only possible because of the additional processing and stress relieving that goes into Skunk2 Racing Pro-Series valve springs allowing Pro Series Valve Springs to be made with less coils.