04-19 KTM 250SX: Pro Moto Billet Rear Disc Guard Pro Moto Billet disc guards are a must for the hard core off-road rider or racer. The piece helps deflect rocks and other debris and prevent damage to the rear disc rotor. The Pro Moto Billet open design allows better cooling and less mud packing.Each disc guard is machined from 6061 billet aluminum and color anodized for durability and protection from the elements. Some models include integrated wheel spacer / mount tabs for added strength. Fully corner rounded.