Product updated on 2021-01-08, BellTech - BEL:5952, 1999-06 Silverado/Sierra 1/2 Ton leaf (Std. & Ext. Cab) 3 inch Rear Drop (each, 2 rqd), 99-06 Chevrolet Silverado/Sierra 1/2 Ton (Std. & Ext. Cab) 3 inch Rear Drop - Rear Leaf Spring, By recalculating the arch of the leaf spring to provide the appropriate spring rate for lowered travel utilizing the latest manufacturing techniques, Belltech’s leaf springs are designed to easily lower the rear of your leaf spring equipped Sport Truck or SUV by up to 4 inches depending on application. All Belltech Leaf Springs are direct OEM replacements and come complete with high quality OEM style bushings.