Hotchkis' Stage I Kit Dodge Challenger RT and SRT8 consists of two products engineered to work together for everyday road and track day handling. When we decided to manufacture coil spring for the Dodge Challenger we took our time and researched other springs on the market. With those springs in mind we found a great combination of performance and comfortable ride characteristics. Our springs feature a linear rate design, and come complete with urethane bump stops. Improve cornering by reducing body roll with a set of Hotchkis Performance Sway Bars. Hotchkis bars feature lightweight hollow construction and include greasable polyurethane bushings,and are powder coated for durability. Each bar set has been tested and tuned to ensure the best performance possible. Specs: Spring Rate: Front: 280lb Rear: 650 lb Challenger Drop:Front: 1/8" Rear: 5/8" “Handles and rides beautifully. Great improvement in looks and performance!” Steve Strope Pure Vision Noted custom car builder. Availability: ships in 1-3 business days Be sure to check out the other Hotchkis Suspension products for the Chrysler 300C and Dodge Charger SRT8 on our website.