Kelford Subaru EJ20-25 Extreme Beehive Springs

Extreme Beehive Valve Spring and Titanium Retainer kit for Subaru EJ20 and EJ25 engines. Designed for extreme boost and high RPM racing engines. Made from ultra clean Silicon Chrome spring steel with a higher fatigue resistance compared to other spring steels. Heat treating and post processing is the highest quality available. High frequency spring design to reduce spring surge at high operating RPM. The retainer is designed for shimless set ups, does not house a shim. kit is designed for the most powerful Subaru engines on the planet.
120lb seat pressure at 35.5mm installed height. 245lbs at 11.5mm valve lift. Coil bind at 22.0mm. 12.5mm max lift. Includes spring seats to set the correct spring installed height.
Extreme nose pressure, please use our KCF-SUBARU DLC bucket for improved parts longevity.