The Chevrolet Performance ZR2 Long Travel Leaf Spring System is an optimized single rate leaf spring that replaces the stock ZR2 Dual Rate Spring. The spring design relocates the rear axle for a better directed path of the rear tire to center in the rear wheel house in extreme travel conditions. The spring system also increases the rear ride height approximately 30mm to allow for a typical off-road payload to be carried during off-road events. Overall suspension travel is increased up to 11" when paired with the Long Travel Rear DSSV shocks (P/N 84402367). A direct bolt-on, the system includes both rear leaf springs, longer off-road shackles, and all mounting fasteners.