Cheap Xootr Mg with Fender – Black Review The deck of the Mg is solid magnesium (no kidding) providing the lightest deck structure and lowest deck height of any Xootr scooter to date. We believe the Xootr Mg is the most advanced kick scooter ever made. The deck is cast in solid magnesium, powder coated, and then CNC machined. The wheels are die cast aluminum rims with our ultra-low-resistance polyurethane tire (black). Includes rear fender/brake kit. Black color. Frame construction: Magnesium structure integral with deck. Grips: Black conformal foam. Push button ergo pin. Handlebar: TIG-welded 4130 steel. Brake: Front brake with BMX-style brake lever.