The Chevrolet Performance ZR2 Rear Jounce Shock System, designed specifically for 2017+ Colorado ZR2 models, is intended exclusively for off-road use. The Jounce Shock System greatly enhances gross vehicle motion control, increases suspension bump capacity, and provides exceptional bottoming protection for extreme off-road conditions. This complete bolt-on system (requires removal of existing jounce bumper pad on frame) includes both rear Jounce Shocks, the required mounting brackets and all required fasteners. Requires Jounce Striker/Leaf Spring Mount System (P/N 84422116). Chevrolet Performance recommends use with the Cross Car Beam System

(P/N 84403779, V-6 equipped)