Brian Crower Dual Valve Spring/Retainer Kit B16A/B18C (Civic Si/Integra)

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 titanium retainers are CNC machined from 6AL4V round bar titanium to exacting tolerances. Use steel retainer for high mileage applications. Spring Pressure: BC1010 Seat: 1.350" @ 80 lbs / Open: 0.900" @ 220 lbs / Coil Bind: 0.765" (no machine work required) Mandatory to check valve guide to retainer clearance prior to operation.