This kit includes single valve springs (24) and spring retainers. We recommend using this kit with the BC camshaft upgrade to ensure proper valve performance and no spring fatigue.
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: BC1140 Seat: 1.460″ @ 84 lbs / Open: 1.000″ @ 235 lbs / Coil Bind: 0.935″ (no machine work required)