A special hardened chromoly steel gives this MotoSport Rock axle strength and durability beyond the competitors, and far beyond what the stock part provides. Additionally, with this axle, you can adjust the width of your rear end up to 2 inches (overall) wider. Forged from special chromoly hardened steel. Includes spacers to increase the width between your rear wheels, 0" to 2". Fully compatible with factory sprocket, brake disc hub, carrier and hardware. Polished chrome finish prevents rust, corrosion and is easily cleaned.