Rear Sprocket 520 Size 47T Magnesium YZ125/YZ250/YZ426/YZ450F/WR250R/WR250X/WR250/WR400F

[TALON TR339R/L Rear Sprocket, 520 Size, 47T, Magnesium for YZ125/YZ250/YZ426/YZ450F/WR250R/WR250X/WR250/WR400F, WESTWOOD] ・Made of 7075 T6 aluminum, known for its lightweight and excellent rigidity, also used in aircraft. ・Designed and developed to improve the machine's overall balance by reducing unsprung weight, thereby allowing the rear shock to operate more smoothly. It also features self-cleaning grooved machining to reduce resistance caused by mud and gravel between the chain and sprocket. ・It is essential to replace the chain and sprockets as a set of three! If the chain is stretched, simply replacing the sprocket alone with a new one will cause the sprocket to wear unevenly to match the stretched chain pitch. Not only will this prevent the new sprocket from performing optimally, but it will also ultimately shorten its replacement cycle. Compatible models/years: YAMAHA YZ125/'99-'09, YZ250/'99-'09, YZ426/'99-'09, YZ450F/'99-'09, WR250R/'08-'09, WR250X/'08-'09, WR250/'99-'07, WR400F/'99-'07 Type: Rear Size: 520 Teeth Count: 47 Color: Magnesium *Images are for illustration purposes only. Product designs and specifications shown may change without prior notice. Thank you for your understanding.