RFX Pro Series Armalite Double Compound (Steel/Aluminium) - 520 SprocketRef : RFX01138A / 1123218008

RFX — Pro Series Armalite Composite Sprocket Aluminum 520 (FXRS10-51ALBK)

Designed for motocross and born from track experience, this Armalite sprocket combines lightweight construction with durability. Its 7075-T6 aluminum machined center minimizes unsprung weight, while the outer ring made of high-density HCS steel enhances the strength and longevity of the tooth profile. The double ring mounting optimizes transmission and reduces stress on the rivets thanks to the Hex-Drive interface between the two parts.

• Center material: CNC 7075 aluminum
• Outer ring: high-density HCS steel
• Number of teeth: 51 (pitch 520)
• Hex-Drive interface for better transmission
• CAD profile to lighten without sacrificing rigidity
• Redesigned mud release grooves to minimize wear
• Durable black anodized finish

Installation: follow the manufacturer's torque specifications and procedure. Before installation, clean the hub perimeter, check the condition of the bolts, and apply suitable thread lock if necessary. Tighten the nuts evenly while maintaining the hexagon in grip.

Compatibility: suitable for motocross machines equipped with 520. Specifically fits Honda CRF 450 (R, RWE, RX 2026) depending on reference and adaptation. For a secure installation, verify the exact fit to your motorcycle's hub.