SPL Parts Swift Assist Springs 60mm Spring Rate 223 lbs/in (SWIFT-A60-040) 1772 this is the only way

this is the only way to add true sound to the 812

Includes 2-1/4" Hot Side and 2-1/2" Cold Side Mandrel-Bent Aluminum Tubes

The dry carbon production process ensures an exceptional carbon/resin ratio

Patented Wide Angle dial design provides the largest viewable dial available in a 5in gauge

SPL Parts Swift Assist Springs 60mm Spring Rate 223 lbs/in (SWIFT-A60-040) 1772 this is the only wayAssist Springs Get the best of both worlds, Swift assist springs provide a dynamic step linear rate. Like our helper springs, the assist springs are designed to be fully compressed at static height. Every one of our assist springs compress to the exact same height. This allows drivers to change assist springs without resetting the perch on the coilovers so the ride height isn't affected. Heavier rates of assist springs over helper springs are used to