RFX Pro Series Armalite Double Compound (Steel/Aluminium) - 520 SprocketRef : RFX01144A / 1123223006

RFX Pro Series Armalite Aluminum Sprocket - 520 (ref. FXRS20-50ALBK)

Designed for off-road use and validated by race teams, this RFX Pro Series Armalite double sprocket combines lightweight construction with durability. Its CNC-machined 7075 aluminum core reduces unsprung mass while the outer ring made of high-carbon HCS steel extends tooth longevity. The anodized black finish gives it a race-ready look that is resistant to the elements.

• Chain pitch: 520
• Number of teeth: 50
• Core: CNC-machined 7075-T6 aluminum
• Outer ring: high-density carbon HCS steel for better wear
• Hex-Drive interface between inner and outer rings for optimal power transmission and reduced stress on the rivets
• Optimized CAD profile and mud evacuation grooves to minimize clogging and abrasion
• Stiff design for better torsional resistance

Compatibility and installation: suitable for cross use, particularly on KAWASAKI KX 450 X (2026), KX 250 X (2026), and KX 250 (2026). Follow the manufacturer's installation guidelines and torque specifications during replacement: clean the hub, use an appropriate thread lock, and tighten the fasteners evenly.