SPL Parts Swift Assist Springs 60mm Spring Rate 335 lbs/in (SWIFT-A60-060) 1529 Mach Force XP 409 SS

Mach Force XP 409 SS Cat-Back Exhaust System with Single Side Exit (49-43076-P) by aFe

Size: 72inch x 26inch

Magnum Force Intake Reducer Coupling Kit (59-00037) by aFe

Shipping costs will need to be quoted and charged once an order is placed

Increases horsepower by 6 whp and torque by 12 ft-lbs

SPL Parts Swift Assist Springs 60mm Spring Rate 335 lbs/in (SWIFT-A60-060) 1529 Mach Force XP 409 SSAssist 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