PAC Racing Springs Valve Spring Shims - 0.020 in Thick - 1.250 in OD - 0.570 in ID (Set of 16) UMI2653-B 5/16 in Male Hose Barb

5/16 in Male Hose Barb Inlet

Billet Metering Blocks - CNC Machined w/ 4-stage emulsion provide more precise fuel metering

and work closely with the chassis builders and team drivers to bring you the best product possible

1987-2018 Jeep Wrangler

2 oz Bottle

PAC Racing Springs Valve Spring Shims - 0.020 in Thick - 1.250 in OD - 0.570 in ID (Set of 16) UMI2653-B 5/16 in Male Hose BarbProduct Description: Valve Spring Shim 0. 020 in Thick 1. 250 in OD 0. 570 in ID Steel 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 increasing weight from traditional methods.