Brian Crower F20C / F22C VALVE SPRING & RETAINER KITS

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. Use steel retainer for high mileage applications KITS: BC0040 - Seat Pressure: 84lbs @ 40.13mm, Open pressure: 250lbs @ 27.94mm, Coil Bind: 26.16mm, Max Lift: 13.97mm, Steel Dual Spring: BC1040 Retainer: BC2010 Seat: BC2904 BC0040S - Seat Pressure: 84lbs @ 40.13mm, Open pressure: 250lbs @ 27.94mm, Coil Bind: 26.16mm, Max Lift: 13.97mm, Titanium Dual Spring: BC1040 Retainer: BC2011 Seat: BC2904  BC0040T - Seat Pressure: 92lbs @ 40.39mm, Open pressure: 270lbs @ 27.94mm, Coil Bind: 22.10mm, Max Lift: 15.75mm, Titanium Dual Spring: BC1040T Retainer: BC2010 Seat: BC2904 BC0040TS -  Seat Pressure: 92lbs @ 40.39mm, Open pressure: 270lbs @ 27.94mm, Coil Bind: 22.10mm, Max Lift: 15.75mm, Steel Dual Spring: BC1040T Retainer: BC2011 Seat: BC2904 BC0040X - Seat Pressure: 80lbs @ 40.39mm, Open Pressure: 250lbs @ 28.19mm, Coil Bind: 26.16mm, Max Lift: 13.97mm, Titanium Dual Spring: BC1040 Retainer: BC2010 Seat: No Seat BC0040SX - Seat Pressure: 80lbs @ 40.39mm, Open Pressure: 250lbs @ 28.19mm, Coil Bind: 26.16mm, Max Lift: 13.97mm, Steel Dual Spring: BC1040 Retainer: BC2011 Seat: No Seat Spring Pressure: BC1040 Seat: 1.580" @ 84 lbs / Open: 1.100" @ 250 lbs / Coil Bind: 1.030" (no machine work required). K20A and F20C/F22C use same spring/retainer/seat kit.