RFX Pro Series HCS Steel - 520 SprocketRef : RFX01141A / 1123222003

Manufacturer Ref: FXRS 20-50 99ST
RFX Pro Series HCS Steel Sprocket - 520, 50 teeth. Designed for motocross, this RFX Pro Series sprocket made of high carbon steel offers a robust and reliable solution for riders seeking durability and quality at a good price/performance ratio. Its CNC laser cutting and studied profile ensure a precise fit on the hub and a clean finish.

• Material: certified high carbon steel (HCS)
• Number of teeth: 50 teeth
• Chain pitch: 520
• Color: silver
• CNC laser cutting for tight tolerances and precise positioning
• Optimized CAD profile to reduce unnecessary mass
• Mud evacuation grooves to limit clogging and wear
• Stiff design for better torsional resistance

Installation Instructions (summary):

• Place the motorcycle on a center stand or support, with the rear wheel in the air.
• Remove the wheel and chain, then the worn sprocket.
• Clean the hub perimeter and check the condition of the bolts and seals.
• Position the new sprocket, apply thread locker (like blue Loctite) on the bolts, and tighten evenly according to the manufacturer's torque specifications.
• Reinstall the wheel and adjust chain alignment/play.

Compatible with recent motocross models such as KAWASAKI KX 450 X (2026), KX 250 X (2026), and KX 250 (2026). Ideal for riders looking for a durable, precise sprocket suitable for off-road conditions.