RFX Pro Series Trials Aluminum Sprocket - 520 (Manufacturer part number: FXRS 90-43 99BU)
Specifically designed for trial and motocross riders seeking lightweight and reliability, this RFX Pro Series sprocket is CNC machined from high-strength 7075 aluminum. Its optimized CAD profile and blue anodization provide a race look while minimizing unsprung weight. The mud evacuation grooves facilitate self-cleaning in muddy conditions and contribute to smoother chain/sprocket engagement in extreme conditions.
- Material: CNC machined 7075 aluminum
- Number of teeth: 43 teeth — chain pitch: 520
- Mud evacuation grooves to reduce debris buildup
- Laser-etched RFX logo, blue anodized finish
- Dedicated color code according to brand/model, also available in standard silver
- CAD profile and tight tolerances for precise chain engagement
Compatible with many trial/motocross models, it fits specifically the GAS GAS TXT PRO 125 (2006), TXT PRO 280 (2002), and TXT PRO 250 (2002). A sprocket designed for climbing sessions and technical outings, combining aesthetics, lightweight design, and performance-oriented features.
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