NIU XQi3 Street and XQi3 Wild rear wheel diagram showing rear wheel axle, brake disc bracket, rear brake caliper with pads, disc brake pads, rear brake disc, rear rim 1X1.40, rear wheel driven sprocket, left and right rear wheel bushings, 70/100-19 outer tire, 70/100-19 inner tube, inner tube cushion, flat washer, and hexagon flange self-locking nut for OEM NIU XQi3 Street and XQi3 Wild rear wheel and brake system replacement parts.