520 Motorcycle Rear Sprocket For Yamaha YZ125 YZ250 YZ250F YZ426F YZ450F YZ400 YZ450FX YZ250X TTR230 WR250F WR450F WR400F WR426F

High-concerned chemical：None Special Features：Rear Sprocket Item Diameter：20inch Item Weight：0.8kg Item Height：3inch Item Width：20inch Item Length：20inch External Testing Certification：iso9001 Model Name：YZ WR Brand Name：LOPOR Origin：Mainland China Item Type：Sprockets Material：carbon 45 steel

High-concerned chemical: None Special Features: Rear Sprocket Item Diameter: 20inch Item Weight: 0.8kg Item Height: 3inch Item Width: 20inch Item Length: 20inch External Testing Certification: iso9001 Model Name: YZ WR Brand Name: LOPOR Origin: Mainland China Item Type: Sprockets Material: carbon 45 steel