Description
The Renthal Ultralight Rear Sprocket is a high-performance 520-52 tooth rear chainwheel designed for KTM 125-525 EXC, SX, SX-F, XC, XC-W, and XC-F models from 1991 to 2024. Precision CNC-machined from 7075-T6 aluminum, it is 66% lighter than steel while maintaining exceptional durability. Engineered for motocross, supercross, and enduro, it features an advanced tooth profile for optimal power transfer and extended chain life. The hard-anodized surface enhances wear resistance, and self-cleaning mud grooves help prevent dirt buildup.
224U-520-52GPHA made by Renthal









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