RFX Pro Series Armalite Double Compound (Steel/Aluminium) - 520 SprocketRef : RFX00412A / 1123236007

RFX — Pro Series Armalite Composite Double Sprocket 50 Teeth (FXRS 50-50 ALBU)

Designed for those seeking reliability and weight reduction on the rear end, this Armalite sprocket combines a CNC-machined 7075-T6 aluminum core with a high carbon steel (HCS) outer ring. The two-piece design minimizes unsprung mass while preserving the longevity of the teeth: the result is a more responsive transmission and reduced inertia for track maneuvers or off-road outings.

• Color: anodized blue, resistant finish against wear.
• Material: inner ring made of 7075-T6 aluminum; outer ring made of HCS steel.
• Number of teeth: 50 — for 520 chain pitch.
• Hex-Drive interface between the two rings for optimized torque transmission and reduced stress on the rivets.
• Lightweight CAD profile and mud clearance grooves to limit clogging and wear.
• Stiff design increasing torsional resistance without adding weight.

Installation tips:

• Mount the motorcycle on a stand, with the rear wheel lifted and the chain relaxed.
• Remove the wheel and old sprocket, clean the hub and fasteners.
• Position the new sprocket, apply suitable Loctite to the bolts, and tighten in a cross pattern while respecting the manufacturer's torque specifications.
• Check the alignment and chain tension after reassembly.

Suitable for Quad, Cross, and Roadster environments, this RFX 520 sprocket is ideal for those looking to combine robustness and lightweight performance on both road and off-road.