Front Sprocket Fit Yamaha YZ 400 F 98-99 JT Large F569.12 12 Right Id:21/25 1 Unit \n\n (Please Check The Compatibility As The Product Fits Several Bikes)\n\nTechnical Data:\nPitch: 520 \nMounting: Large Spline \nInner Diameter Minimum: 21mm\nInner Diameter Maximum: 25mm\nInternal Teeth (Number of Teeth): 6 \nInternal teeth (spacing): 5mm\nNumber of mounting bolts: 2 \nHole Spacing: 42mm\nConstruction: Standard \nManufacturer: JT \nNumber of teeth: 12 \n\nHigh-Grade Motorcycle Front Sprocket | Precision Drive for your Yamaha\n\nThe front sprocket is the critical starting point for your motorcycle\uFFFDs entire drive system. Mounted directly on the output shaft of your engine, this single component dictates how effectively your power is transferred to the rear wheel. If your current sprocket shows signs of wear\uFFFDsuch as hooked or pointed teeth\uFFFDyou are losing horsepower and compromising your safety. This precision-engineered replacement is designed specifically to restore the .