Description Designed for high rpm, BC valve springs are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers and spring seats are CNC machined from 6AL4V titanium to exacting tolerances. Spring Pressure: BC1130 Seat: 1.550″ @ 84 lbs / Open: 1.000″ @ 235 lbs / Coil Bind: 0.935″ Kit includes: BC1130 Valve Springs & BC2130 Retainers
