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 BC1300-16 Single Free Length 1.690" Seat 1.325" @ 80 lbs Open 0.980" @ 158 lbs Coil Bind 0.810" Retainer BC2300S-16 Spring Seat OEM Net Cam Lift 0.460" / 11.68mm