SPL Parts Swift Assist Springs 60mm Spring Rate 223 lbs/in (SWIFT-A60-040) 1772 HC10-HDR6 kit features ACT's most

HC10-HDR6 kit features ACT's most popular Heavy Duty pressure plate

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

Casted upper stainless steel V-Band for precise fitment

2007-2020 Toyota Tundra V8-5

SPL Parts Swift Assist Springs 60mm Spring Rate 223 lbs/in (SWIFT-A60-040) 1772 HC10-HDR6 kit features ACT's mostAssist 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