With the rear axle on top of the leaf spring, Belltech Lowering Blocks provide an inexpensive, easy to install way to lower your vehicle by increasing the distance between the leaf spring and the axle, effectively lowering the vehicle. Belltech lowering block kits are manufactured of high quality extruded aluminum and come complete with blocks, U-bolts, Nylon nuts and washers. The extruded aluminum process yields higher strength ratings when compared to cast or steel lowering blocks. Lowering blocks are designed to lower the rear of your vehicle in 1, 2, 3, or four inch increments. Also available with built in 2 degree taper for drive line angle correction.