PAC Racing Springs RPM Series Beehive Valve Spring - 409 lb/in Spring Rate - 1.070 in Coil Bind - 1.034 in / 1.290 in OD (Set of 16) 63701 our engineers were tasked with

our engineers were tasked with developing a 2-Step Rev Control that could be added to give racers the ability to switch to a low rpm limit to use on the starting line

Ford Cleve / Modified

Isolator Bushing

5 in Triple Disc

PAC Racing Springs RPM Series Beehive Valve Spring - 409 lb/in Spring Rate - 1.070 in Coil Bind - 1.034 in / 1.290 in OD (Set of 16) 63701 our engineers were tasked withProduct Description: Valve Spring RPM Series Ovate Beehive Spring 409 lb in Spring Rate 1. 070 in Coil Bind 1. 034 in 1. 290 in OD Set of 16 Traditional Springs are made from the same size (Diameter) wire throughout the helix of the spring. PAC Racing Springs has partnered with technology leaders in order to provide this advanced new tapered wire product. Tapered wire allows for a true progressive and dual rate without reducing spring travel and