RFX FXRS 61-51 ALRD is an Armalite rear sprocket designed for 2020s Beta bikes, featuring a 51-tooth configuration.
Constructed from CNC 7075 aerospace aluminum for lightweight strength and durability. The sprocket includes a hardened HCS outer ring and a hex-drive interface positioned between the inner and outer rings for enhanced torque transfer. Its CAD-designed profile reduces weight without compromising strength, while the new mud clearing grooves decrease wear and debris buildup. Rigid construction boosts torsional rigidity, ensuring consistent power transfer and longevity. Finished with a color anodized coating, it offers a factory bike aesthetic and corrosion resistance.
The kit includes the sprocket and mounting hardware. This sprocket is suitable for use on Beta models from 2020 and later, providing improved performance and durability for aggressive riding conditions.
