
RFX Pro Series Elite Aluminum Sprocket - 520 (Manufacturer Part No: FXRS 50-47 99BU): a sprocket designed for both off-road and street use, made for 520 pitch configurations. CNC machined from 7075 aluminum and anodized blue, it combines lightweight construction with mechanical strength for use on quads, motocross, or roadsters.
Whether you're refurbishing a transmission after an off-road season or adjusting your sprocket for a more robust style, this RFX sprocket is aimed at riders looking for a precise and durable piece of equipment. Common compatibilities: TRIUMPH TF 450-X (2026), DUCATI DESMO 450 MX (2026), STARK FUTURE VARG EX (2026) — check bolt pattern and number of holes before installation.