5th Coil Spring Progressive Rate

Enhance Grip and Performance
Eibach's Progressive 5TH-COIL-SPRING features dynamic rate control, engineered to increase mechanical grip using multiple rates throughout the acceleration curve.
Each 5TH-COIL-SPRING is manufactured by Eibach in the USA with legendary quality and proprietary high-tensile, chrome-silicon spring wire to ensure consistent performance, race after race.
How 5th Coil Springs Work
The progressive design of the 5th coil delivers maximum grip down the straight and in transition utilizing a 250lb inch primary spring rate during the first 2 inches of travel, reducing drivetrain shock and increasing initial bite as you take a set.
As load is added, rate smoothly transitions to activate the secondary 425lb inch coils, which provides a consistent, planted feel throughout acceleration reducing excessive wheel spin, resulting in increased traction and repeatable performance lap after lap.

Upgrade to Eibach
Use the dimension search below to find springs that are best suited for your setup. Not sure which parts to choose? Contact Eibach Tech Support or an authorized Eibach dealer to help you decide what is best for your application.