Motocross Wheels 1.60x21 and 2.15x18-inch Front and Rear Wheels Aluminum Wheel for Motocross Hub Core Assembly Aluminum wheels designed for motocross use, sized 1.60 inches by 21 inches for the front and 2.15 inches by 18 inches for the rear.Compatible with standard hub core assemblies.Constructed from aluminum for reduced weight and in off-road conditions.Suitable for use in motocross applications requiring wheel performance. Important: This product is an aftermarket alternative.Brand names mentioned serve only to show which devices it fits.