Each set comes complete with all valve springs for your engine.

Skunk2 Racing Alpha Series Valve Springs have been developed as a result of many years of experience in drag and touring car racing. The Alpha Series springs are made from super clean, Japanese milled chrome silicone wire. The dual interference fit valve spring design prevents harmonics and valve float. All Skunk2 valve springs are race tested and proven and can be used with both forced induction and naturally aspirated engines. Skunk2 Recommends these Alpha Series Springs for use with most mild camshafts, including the Skunk2 Tuner series Camshafts. The Alpha Series Springs are not recommended for use with Pro Series Camshaft upgrades.

Upgraded retainers (sold separately) are highly recommended. This ensures the springs are kept in place during hard acceleration and high RPM pulls.

Spring Base Kit Notes: For some applications (when needed), a Skunk2 Spring Base Kit is included for long-term reliability of your camshafts and valve springs.