
RFX Pro Series HCS Steel Sprocket - 520 (Manufacturer part number: FXRS 20-49 99ST): a sprocket specifically designed for motocross, where durability and reliability are essential. Made from certified high carbon steel, it offers superior wear resistance compared to mild steel while maintaining an optimized profile to limit excess weight compared to aluminum. Ideal for riders looking for a robust component to tackle mud, jumps, and long off-road sessions.
Practical tips: replace the sprocket while checking the condition of the chain and bolts. Adhere to the manufacturer's torque specifications and apply an appropriate thread locker. Suitable for motocross machines such as KAWASAKI KX 450 X (2026), KX 250 X (2026), and KX 250 (2026).