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JT SPROCKETS ultra-light aluminum sprocket 478 - 520 (manufacturer reference: JTA478.46BLK): a rear sprocket designed for replacement or gearing adjustment on roadsters. Made from aerospace aluminum 7075-T6 (Ergal), it combines low weight and strength to lighten the final drive without adding bulk to the machine.
This sprocket is aimed at riders looking for a lightweight part for the rear wheel, easy to install during a sprocket change or gearing adjustment. Its Ergal design is common in motorcycle transmission components, offering a good compromise between durability and reduced rotating mass.
Examples of common fitments: KAWASAKI NINJA ZX-6R (2025 - 636 cc), KAWASAKI NINJA ZX-6 R ABS (ZX636G) (2021 - 636 cc), KAWASAKI NINJA ZX-6 R ABS KRT EDITION (ZX636G) (2020 - 636 cc). Before installation, please check the exact compatibility with your model and the condition of your chain and sprocket.
