Just like the brakes on any vehicle, the importance of having properly maintained scooter brakes cannot be overstated. Scooter brake rotors gets worn with every use and sooner or later your scooter brake rotor parts will need replacing. Imported Chinese-made scooters use the common GY6 or QMB139 engine, it follows that most street scooter brakes for these scooters are of three very similar designs. As a result, scooter brake parts are usually interchangeable with a large number of brand name or generic makes and models. Scooter Parts Catalog ships brake pads, brake rotors, and scooter brake lines usable on a wide number of scooters. Replacement parts for scooter brakes are not expensive, but damage and injuries caused by worn scooter brakes will always be too costly.