Rear Sprocket Grooved - Blu 520-50 Teeth - For 99-24 Yam YZ125/X/G/ 250/F/X/ 450F/FX/ WR250-450F

For 99-24 Yam YZ125/X/G/ 250/F/X/ 450F/FX/ WR250-450F

• Color: Blue
• Model: Ultralight
• UPC: 765442079297

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Rear Ultralight Sprockets:. Manufactured to extremely tight tolerances from a special material developed to withstand the stress of Supercross, Motocross and Enduro. 7075-T6 aluminum alloy rear chainwheels are 66% lighter than steel, yet incredibly durable. Advanced tooth profile, concentricity and accuracy of fit provide maximum power transfer and long-life. Combination of a very high strength base material and an exceptionally hard-wearing surface result in significantly increased chainwheel life. Self cleaning mud grooves help prevent dirt build-up.