Replacement Disk Brake Rotor + brake pads from Yamaha OEM maker. Disk Rotor diameter 180mm Yamaha Parts number 3UH-F582U-00-00 (rotor) 3XG-W0045-01-00 (pads) 3UH-F582U-00 (rotor) 3XG-W0045-01 (pads) this item list come with brake pads we have nother list without pads. parts incude: 1x Disk Rotor 1x pair brake pads check photo for detail measurement this parts will for many Yamaha model scooter please make sure the parts /rotor size first. some of countries 50cc model disk rotor size smaller (South America) will for Yamaha 2T - 2 stroke scooter / moped ZUMA 50cc (YW50) 2002-2011 BWS 50 YW50 2002-2011 BWS -ZUMA 100cc YW100 1997-2011 BeeWee 100cc YW100 BeeWee 50cc YW50