RFX Pro Series Elite Aluminium Rear Sprocket - 520 SprocketRef : RFX01024A / 1123221007

RFX Pro Series Elite Aluminum Sprocket - 520 (Manufacturer part number: FXRS 20-50 99BK): a sprocket designed for competition and motocross outings where mud and rough terrain are part of the daily routine. Machined from 7075 aluminum, it combines lightweight construction with mechanical strength to reduce unsprung mass without sacrificing reliability.

• CNC machining in 7075 aluminum for precise geometry.
• 50 teeth — 520 chain pitch.
• Mud evacuation grooves to limit accumulation and premature wear.
• Laser-engraved RFX logo and black anodized finish.
• CAD-designed profile and tight tolerances for precise chain engagement.
• Stiff design aimed at improving torsional resistance in demanding conditions.
• Color coding specific to models or available in standard silver.

Whether you are preparing a KX for racing or looking for a robust replacement part for your off-road training, this RFX Pro Series sprocket offers a lightweight and refined alternative. Check compatibility with your motorcycle (reference 520) before installation to ensure proper alignment with your sprocket and chain.