Brian Crower Valve Springs and Retainers Evo 10

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.

Spring Pressure: BC1130 Seat: 1.375″ @ 75 lbs / Open: 0.950″ @ 175 lbs / Coil Bind: 0.850″