RFX Pro Series HCS Sprocket - 520, 48 Teeth
Manufacturer reference: FXRS 10-48 99ST. Designed for motocross enthusiasts, this RFX Pro Series sprocket made from high carbon steel combines durability with optimized design for the 520 transmission. Silver finish, lightweight profile designed by CAD, and CNC laser cutting for a precise fit around the hub.
Highlights:
- Material: certified high carbon steel (HCS) for good wear resistance.
- Number of teeth: 48 (pitch 520).
- Profile designed by CAD to minimize weight while maintaining rigidity.
- Mud evacuation grooves to reduce accumulation and chain abrasion.
- CNC laser cutting and tight tolerances for precise positioning on the hub.
- Stiff design for better torsional resistance during off-road demands.
Installation (key steps reminder):
- Place the motorcycle on a stand and lift the rear wheel.
- Remove the chain and wheel, then disassemble the worn sprocket.
- Clean the hub and check the condition of the bolts and seals.
- Install the new sprocket, apply blue Loctite to the bolts, and tighten evenly according to the manufacturer's manual.
- Reassemble the wheel and adjust chain alignment and tension.
Common compatibilities: particularly suitable for Honda CRF 450 (2026 CRF 450 RX ENDURO, RWE, and R models).
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