RFX Pro Series Armalite Double Compound Rear Sprocket (Steel/Aluminium) - 520 SprocketRef : RFX01030A / 1123236009

The RFX Pro Series Armalite double crown is designed for demanding riders who want to combine lightness and durability. Developed and tested by racing teams in world and British championships, it features a machined 7075-T6 aluminum center and a high-density HCS steel outer ring to preserve the teeth longer while reducing unsprung mass.

• Manufacturer reference: FXRS 50-50 ALRD
• Type: RFX Pro Series Armalite double composite crown
• Material: CNC aluminum inner ring / HCS outer ring
• Pitch: 520
• Teeth: 50
• Color: Anodized red
• Technical features: Hex-Drive interface between rings, lightweight CAD profile, mud evacuation grooves, rigid design to reduce torsion

This crown is intended for motocross, quad, and roadster machines where transmission responsiveness and robustness are essential. For secure mounting, follow the manufacturer's recommendations: raised wheel, cleaning of the hub, use of thread locker (blue Loctite) on the bolts, and uniform tightening to the specified torque. Common application examples: TRIUMPH TF 450-X, DUCATI DESMO 450 MX, STARK FUTURE VARG EX.