Manufacturer Ref: FXRS 40-51 99BK — RFX Pro Series Elite 520 aluminum anodized black sprocket. Designed for demanding motocross riders and roadsters, this 51-tooth sprocket adheres to RFX standards: CNC machining, high-performance materials, and meticulous finishing.
- Material: CNC machined 7075 aluminum
- Number of teeth: 51
- Chain pitch: 520
- Finish: black anodization with laser-engraved RFX logo
- Design: lightweight CAD profile, mud evacuation grooves
- Mechanical features: rigid design for better torsional resistance and tight tolerances
The evacuation grooves limit mud accumulation to extend the lifespan of the chain and sprocket, while precision machining (tight tolerances) and the rigidity of the profile contribute to a sharp response during acceleration and more uniform wear. Color-coded by brand, this black version aesthetically integrates with many rolling chassis.
Common compatibilities: suitable for SUZUKI RM-Z 450 (2026), RM-Z 250 (2026), and RMX 450 (2019). A part intended for riders seeking reliability, lightweight design, and professional finish for track or off-road outings.
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