Seller notes

JT Steel Rear Sprocket 520 49T for Yamaha YZ250/WR250Z/WR400F/YZ125/YZ250WR Product Details Manufactured using only the finest grade of C49 high carbon steel for the rear sprocket Each 520 sized sprocket is heat treated then bead blasted to reduce surface friction and enhance chain and sprocket longevity, saving you money in the long run Every JT sprocket goes through up to 25 production stages and 10 individual quality control checks before it is ready to leave the factory Fit GuideModelSteel R...

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