VMS Racing Adjustable Lowering Kits for Harley Davidson SPORTSTER motorcycles are Manufactured of High Quality A50, 1/4” Grade Steel Plate. Each Block is WELDED for Superior Strength and Black Powder Coated for a Long Lasting Finish. The Kit Includes 2 WELDED Lowering Blocks, all necessary installation hardware; Grade 9 Bolts, Nyloc Nuts and Washers. This Kit Can Lower the Rear of your Sportster Motorcycle from 1" to 3" Inches. Installation Instructions are Included. These are the Best quality and Nicest Harley Sportster Rear lowering kits sold on the Internet, period! Superb quality, finish and fitment! VMS Lowering Kits are WELDED... NOT bent metal. Bending metal weakens the structural integrity of metal. Do NOT settle for less.