
The RFX Pro Series Elite crown made of 7075 aluminum is designed for demanding riders who want to combine lightness and robustness. CNC machined and CAD designed, it features an optimized profile and tight tolerances for precise finishing. Its anodized blue color distinguishes it on the swingarm while providing protection against wear and corrosion.
Designed for 520 transmissions, this 50-tooth crown incorporates mud evacuation grooves that facilitate cleaning and limit dirt accumulation between the links. The laser-etched RFX logo attests to its manufacturing quality.
The RFX color coding allows for quick identification of compatibility by brand, and the groove design extends the lifespan of the chain and crown in muddy conditions. Commonly associated models include: Triumph TF 450-X, Ducati Desmo 450 MX, and Stark Future Varg EX (2026).
Manufacturer reference: FXRS 50-50 99BU