RFX Pro Series Armalite Double Compound (Steel/Aluminium) - 520 SprocketRef : RFX01173A / 1123236020

RFX Pro Series Armalite Sprocket 520 – 49 Teeth (ref. FXRS50-49ALBK)

Designed for competition and heavy use, this Armalite double sprocket combines a CNC-machined 7075-T6 aluminum core and an HCS steel outer ring to provide a balance between lightweight and wear resistance. The two-part construction reduces unsprung mass while maintaining robust teeth for increased longevity.

• Material: 7075 aluminum inner ring, HCS steel outer ring
• Number of Teeth: 49
• Pitch: 520
• Hex-Drive Interface: direct transmission between the two rings, minimizes stress on the rivets
• CAD Profile: design optimization to reduce mass
• Relief grooves for mud evacuation and reduced wear
• Black anodized finish for protection and a racing look

Delivered ready to install, this sprocket fits onto the hub according to manufacturer recommendations: clean the perimeter, install bolts with thread locker (blue Loctite), and tighten uniformly according to the specified torque. Suitable for Quad, Cross, and Roadster applications, it is particularly compatible with machines like the Triumph TF 450-X, Ducati Desmo 450 MX, or Stark Future Varg EX (check model/year compatibility before installation).