Swift Flat Wire Assist Spring - 60mm (2.37") (Sold Individually) Rate:5.0 kg/mm the Sparco base has a

the Sparco base has a wide metal platform to allow custom mounting of side mounts direct to the base (drilling required)

It also prevents an abundance of ice and snow buildup during the winter months

Increase handling by reducing body roll and squat in search of overall suspension balance

This spring is ground on one end and "Pig Tailed" on the opposing end

Swift Flat Wire Assist Spring - 60mm (2.37") (Sold Individually) Rate:5.0 kg/mm the Sparco base has aFlat Wire Assist Spring 60mm (2. 37") comes with stack spring adapter (Sold Individually) 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 fine tune