Pro Series Armalite Double Composite Crown Aluminium - 520 49 Teeth by RFX
The Pro Series Armalite double crown 520, 49 teeth, is designed for motocross and off-road use. The centre is made from 7075-T6 aluminium combined with an outer ring made of HCS steel to reduce weight while extending the lifespan of the teeth. The Hex-Drive interface between the rings maximises power transfer and reduces stress on the rivets. CAD-designed profile and mud release grooves help minimise wear in muddy conditions.
Design and Materials
- CNC 7075-T6 aluminium inner ring for a lightweight component and easier handling during installation
- HCS outer ring for enhanced tooth durability and improved longevity
- Hex-Drive interface between the inner and outer rings for more direct power transfer and reduced stress on the rivets
- CAD-designed profile providing optimised geometry to reduce mass without compromising structure
- Anodised colour for a uniform finish and polished appearance
Practicality and Features
- New style of mud release grooves that limit debris accumulation and reduce wear
- Stiff design increasing torsional resistance for more stable power transfer under demanding use
- Installation: the motorcycle must be on a stand with the rear wheel lifted and the chain and wheel removed before installation
- Installation: apply blue Loctite to each bolt and tighten the nuts evenly according to the torque specified in the user manual
Advantages
- Cross type, suitable for off-road and muddy conditions
- Compatible universes: Trail/Adventure, Roadster, Enduro, Cross
- OEM Reference FXRS40-49ALBK
Examples of Compatible Motorcycles
- SUZUKI RM-Z 450 (2027 - 450 cc)
- SUZUKI RM-Z 250 (2027 - 250 cc)
- SUZUKI RMX 450 (2019 - 450 cc)
Complete list of compatible motorcycles available in the dedicated section below
