Rear Sprocket 520 size 43T Blue YZ125/YZ250/YZ426/YZ450F/WR250R/WR250X/WR250/WR400F

[TALON TR339R/L Rear Sprocket, 520 Size, 43T, Blue, for YZ125/YZ250/YZ426/YZ450F/WR250R/WR250X/WR250/WR400F, WESTWOOD] ・Made of 7075 T6 aluminum, known for its lightweight yet rigid properties, also used in aircraft. ・Designed and developed to improve the machine's overall balance by reducing unsprung weight, thereby smoothing the operation of the rear shock. 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 simultaneously! If the chain is stretched, simply replacing the sprocket alone will cause the new sprocket to wear unevenly to match the stretched chain's link spacing, not only preventing it from performing as intended but also ultimately shortening the 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 Number of teeth: 43 Color: Blue *Images are for illustration purposes only. The design and specifications of the products shown may change without prior notice. Thank you for your understanding.