RFX Pro Series Armalite Double Compound (Steel/Aluminium) - 520 SprocketRef : RFX00286A / 1123218002

RFX Pro Series Armalite 520 Sprocket — FXRS 10-49 ALRD

Designed for motocross competition, this double composite Armalite sprocket combines a CNC-machined 7075-T6 aluminum core with a high-density HCS steel outer ring. The result is a lightweight piece at the hub while maintaining the durability of the teeth thanks to the steel ring. The Hex-Drive technology between the inner and outer rings maximizes transmission between the components and eliminates stress on the rivets.

Main Features:

• Color: anodized red
• Material: CNC 7075-T6 aluminum center / HCS outer ring
• Number of teeth: 49
• Chain pitch: 520
• CAD-optimized profile to reduce mass
• Redesigned mud grooves to limit wear
• Stiff design for better torsional resistance

Compact and designed for racing use, this sprocket is aimed at motocross and enduro riders looking for a good balance between weight and longevity in the drivetrain. Installation is done through standard replacement: cleaning the hub, positioning the sprocket, applying Loctite to the bolts, and uniform tightening according to manufacturer recommendations.

Compatibility (examples): HONDA CRF 450 RX ENDURO (PE07) 2026, CRF 450 RWE 2026, CRF 450 R 2026. Manufacturer reference: FXRS 10-49 ALRD.