BEL4766 / 4766 - Application Notes Our Lowering Spring Kits are designed to work with or without Belltech Dropped Front Spindles, depending on the total amount of drop you prefer. Each coil is built from chromium alloy steel and is wound, shot peened and powder coated to exacting specifications to assure the proper ride height, ride quality, and long life you expect from all Belltech products. 1", 2". and 3" drops are available.