PAC Racing Springs PAC-1201-16 valve springs. Features 1200 Series Circle Track single spring with damper, 540 lb/in rate, 1.115 in coil bind, 1.260 in OD, set of 16, ideal for circle track racing.
PAC Racing Springs PAC-1216L-16 valve springs. Features 1200 Series Circle Track single spring with damper, 454 lb/in rate, 1.130 in coil bind, 1.260 in OD, Race Saver Series spec, set of 16, ideal...