Eibach ERS 70mm ID Linear Tender Spring - 2.99" Length (40-70-0040) YMM_2000_2005_Pontiac_Bonneville_X_GMX310 ensuring a perfect fit and

ensuring a perfect fit and clean installation

aggressive exhaust tone that enhances the vehicle’s sporty character

the H&R sway bars are an excellent choice for upgrading your vehicle’s chassis dynamics

The adjustable lowering allows you to fine-tune your vehicle’s stance for optimal handling and aesthetics

Eibach ERS 70mm ID Linear Tender Spring - 2.99" Length (40-70-0040) YMM_2000_2005_Pontiac_Bonneville_X_GMX310 ensuring a perfect fit andLinear Tender Spring by Eibach The ERS systems relies on a Main and Tender spring concept that provides a softer initial rate when both springs are compressed together, then delivers the desired firmer ending rate once the tender spring closes completely. The Main spring has a linear rate characteristic and determines the final rate of the system. The Tender springs are available in a variety of linear rate as well as progressive rate characteristics