RFX Pro Series HCS Steel - 520 SprocketRef : RFX00409A / 1123235005

Manufacturer Reference: FXRS 50-52 99ST

The RFX Pro Series HCS 520 sprocket made from high-carbon steel offers strength and longevity without breaking the bank. Designed for quad, motocross, and roadster riders who demand a reliable part to transmit engine torque, it combines wear-resistant material with precise manufacturing to limit play and premature chain wear.

Engineered with CAD and laser-cut using CNC technology, this 52-tooth sprocket features a lightweight profile (compared to mild steel) while maintaining the necessary rigidity to withstand torsional stresses. The mud evacuation grooves reduce dirt accumulation to limit abrasion, and the tight tolerances improve chain/sprocket alignment for safer rolling.

Features

• Material: certified high-carbon steel (HCS)
• Number of teeth: 52
• Chain pitch: 520
• Color: silver
• CNC laser cut and CAD profile
• Mud evacuation grooves, rigid design

Installation Instructions:

• Place the motorcycle on a stand, rear wheel elevated.
• Remove the chain and rear wheel.
• Loosen and remove the nuts while holding the hex key.
• Clean the hub area and position the new sprocket.
• Clean bolts/nuts, apply blue Loctite, and hand-tighten.
• Evenly tighten with the hex key and adhere to the manufacturer's torque specifications.
• Reinstall the wheel and align/tighten the chain according to specifications.

Ideal for a standard 520 replacement, this RFX sprocket offers a good balance between durability and cost for off-road and road enthusiasts.