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.
Type Dual Free Length 2.025" O.D./I.D. Outer 1.160" / 0.870" O.D./I.D. Inner 0.870" / 0.655" Seat 1.590" @ 80 lbs Open 1.110" @ 250 lbs Coil Bind 1.030" Retainer BC2010, BC2011 Spring Seat BC2904 or OEM Net Cam Lift 0.550" / 13.97mm