Fits: 1975–1986 Chevrolet C30 1987–1988 Chevrolet R30 1989–1991 Chevrolet R3500 1975–1978 GMC C35 1979–1986 GMC C3500 1987–1991 GMC R3500 Belltech6750Shackle KitsBelltech Shackle and Hanger Kits are designed to lower the rear of your leaf spring equipped Sport Truck or SUV by up to 5" (Note: Application dependent). Belltech's redesigned Shackle and Hangers reposition the front and/or rear leaf spring mounting points (spring eyes) so you can simply and effectively lower your leaf spring equipped Sport Truck or SUV without modifying or changing the factory leaf spring. This allows you to retain OEM ride quality and more importantly factory load capacity.Belltech rear shackle and hanger kits are designed to lower the rear of your vehicle and maintain an OEM-quality ride. They are constructed from heavy-gauge, die-stamped steel to ensure a perfect fit and superior quality. All kits feature a durable powdercoated finish and high-quality hardware.