RFX Pro Series Armalite Double Compound (Steel/Aluminium) - 520 SprocketRef : RFX01150A / 1123228007

RFX Pro Series Armalite Aluminum Sprocket - 520 (51 Teeth)

The RFX Pro Series Armalite double composite sprocket combines a 7075-T6 aluminum machined center and an HCS steel outer ring to provide a weight/durability compromise suitable for demanding riders. Designed and tested by racing teams in world and British championships, it features a "double ring" architecture and a Hex-Drive interface that maximizes the transmission between the two parts while eliminating the force exerted on the rivets.

• Material: 7075-T6 aluminum center / HCS outer ring
• Number of Teeth: 51 (chain pitch 520)
• Technology: Hex-Drive interface, optimized CAD profile
• Finish: black anodization
• Terrain Benefits: mud release grooves, increased stiffness to reduce torsion

The result: a lighter sprocket than solid steel options, designed to limit tooth wear while maintaining high rigidity under torque. Ideal for Cross and Roadster practices; be sure to check the mounting diameter and spacing before installation.

Quick installation tips: reassemble the wheel and chain according to manufacturer recommendations, clean the hub, use appropriate thread locker, and tighten to the specified torque. Manufacturer reference: FXRS31-51ALBK.