
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.
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.