Swift Coil-Over Helper Spring - 2.5" ID x 5.0" Tall - 50 lb. Turnlock Fastener Insert Plate late model stock and NASCAR

late model stock and NASCAR Tour-type modified racers and car builders

oil coated stainless steel

Ideal for mild performance applications

1995-2011 Mercury Grand Marquis

Roll Control

Swift Coil-Over Helper Spring - 2.5" ID x 5.0" Tall - 50 lb. Turnlock Fastener Insert Plate late model stock and NASCARUnlike our assist springs, our helper springs are specifically designed to have a minimal effect on the spring rate of the main coilover spring. Helper springs allow the spring to stay on mounted on the coilover perch when the shock is under negative or zero load, also known as droop travel. It is ideal to run helper springs on setups where you cannot preload the main spring due to height issues or when experiencing springs coming loose from the