RFX Pro Series Armalite Double Compound (Steel/Aluminium) - 520 SprocketRef : RFX01174A / 1123236021

Manufacturer Ref: FXRS50-50ALBK

The RFX Pro Series Armalite 520 crown in black finish combines lightness and robustness for those who demand reliability on the track as well as on the road. Its CNC machined heart made of 7075-T6 aluminum reduces unsprung mass, while the high-density carbon steel outer ring maintains the resilience of the teeth against wear. Designed with a Hex-Drive interface between the two rings, it optimizes torque transmission and limits stress on the assembly components.

• Compatibility: 520 (chain pitch)
• Number of teeth: 50
• Materials: CNC 7075 aluminum inner ring / HCS outer ring
• Finish: black anodized
• Design: lightweight CAD profile, mud drainage grooves, and rigid structure for better torsional resistance
• Universe: Quad, Cross, Roadster

Installation: follow the manufacturer's recommendations and tighten to the specified torque. Here are the main steps for a proper final drive replacement:

• Lift the motorcycle and secure the rear wheel.
• Remove the chain and the wheel.
• Dismantle the worn crown and clean the hub.
• Position the new crown, apply thread locker (Loctite blue) on the screws, and tighten gradually in a cross pattern.
• Reassemble the wheel, check alignment and chain tension.

A part designed for riders who want to combine reduced weight, longevity of teeth, and performance in demanding conditions, without compromising on strength. Check compatibility with your model before installation.