Designed for high rpm, WSRD valve springs by BC & PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium 6AL4V alloy for added wear resistance. Kit also includes integrated spring seat and valve seal.
|Seat||1.130" @ 70 lbs|
|Open||0.730" @ 205 lbs|
|Net Cam Lift||0.430" / 10.92mm|