Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC titanium retainers are CNC machined from 6AL4V round bar titanium to exacting tolerances.

This kit is required if you are using the BC Stage 3 Race Cams (or any other cams with high lift).

Each set includes a set of dual valve springs, retainers, and titanium spring seats.