RFX Pro Series Armalite Double Compound (Steel/Aluminium) - 520 SprocketRef : RFX00323A / 1123223003

Manufacturer Ref: FXRS 20-50 ALGN

The RFX Pro Series Armalite 520 sprocket in green is a part designed for motocross competition. Developed and tested by racing teams, it combines a CNC machined 7075-T6 aluminum core with a high-density carbon steel outer ring to minimize weight while maintaining the longevity of the teeth. The "double ring" design with Hex-Drive interface ensures reliable transmission between the inner and outer rings without stressing the rivets.

• Type: Composite double RFX Pro Series Armalite sprocket
• Pitch: 520
• Teeth: 50
• Materials: CNC 7075 aluminum inner ring, HCS outer ring
• Features: Hex-Drive interface, lightweight CAD profile, mud grooves, green anodization

The rigidity of the mounting and the groove design reduce clogging and wear in off-road conditions, making it useful on muddy or rocky terrains. Designed for motocross riders, it is particularly suitable for Kawasaki KX 450 X (2026), KX 250 X (2026), and KX 250 (2026) depending on compatibility.

Installation advice: lift the rear wheel, remove the chain and wheel, position the new sprocket on the hub, apply blue Loctite to the bolts, and tighten evenly while respecting the manufacturer's torque specifications.