RFX Pro Series Armalite Double Compound (Steel/Aluminium) - 520 SprocketRef : RFX01151A / 1123228008

Reference: FXRS31-52ALBK

The RFX Pro Series Armalite double composite sprocket in 520 is designed for demanding riders seeking a balance between lightweight and durability. Its CNC 7075-T6 aluminum center combines stiffness with reduced mass, while the outer ring made of high-carbon HCS steel maintains tooth resistance against wear. The two-ring design, along with the Hex-Drive interface between the parts, ensures reliable transmission without stressing the rivets.

• Type: Double composite sprocket – pitch 520
• Teeth: 52
• Material: 7075 aluminum (center) + HCS outer ring
• Finish: Black anodized
• Applications: Cross, Roadster

The CAD profile lightens the part while increasing torsional strength; the new relief grooves evacuate mud and limit tooth wear. Design, robustness, and a racing look combine to equip demanding hubs without compromising reliability.

Installation – handy reminder: place the motorcycle on a stand, remove the wheel and chain, clean the hub, position the sprocket, use blue Loctite on the bolts, and tighten evenly according to the manufacturer's recommended torque. For maximum safety, check the chain alignment after reassembly.