Stock Diameter Single Spring w/ Conical Ovate Wire High Performance Street / Strip For use with Steel Retainer # 23620-16 For use with Titanium Retainer # 23622-16 / 23625-16 (+.050)
Fully Polished Double Spring w/o Damper High Performance Street / Strip For use with Steel Retainer # 23621-16 For use with Titanium Retainer # 23623-16