Welcome to the PAC Racing Springs Online Store.



Use our Online Spring Charts to help you find the right spring for your application.


Every race weekend, Peterson Spring puts its engineering and R&D advancements to the test with our high performance racing engine valve springs.

PACALOY® Valve Springs, developed by Peterson Spring, became the standard in the professional racing industry.

PAC-Enhanced™ Valve Springs, another Peterson engineering development, sets the benchmark for valve spring load-loss and fatigue life in service racing conditions.

Recently, we introduced PRO-PAC™ Valve Springs, another industry-leading engineered technology from Peterson Spring.


Other pacesetting technologies are constantly being developed in our high performance R&D and test labs. Watch for us at the track!