RFX Pro Series Elite Aluminum Sprocket - 420: designed for motocross riders who want reliability and lightweight performance in muddy terrains. Machined from 7075 aluminum using CNC technology, this sprocket combines precision and strength while minimizing unsprung weight in the rear end.
- Manufacturer part number: FXRS 56-49 99RD
- Material: CNC machined 7075 aluminum
- Number of teeth: 49 teeth
- Chain pitch: 420
- Finish: red anodizing, laser-engraved RFX logo
- Design: CAD profile to optimize weight, mud evacuation grooves
The evacuation grooves clear mud and debris to protect the sprocket and chain during demanding motocross outings. The rigid design and tight tolerances ensure precise chain engagement, beneficial for aggressive riding and quick RPM changes. The RFX color coding allows for quick identification of the part according to brand and model.
Compatible with 420 pitch transmissions and suitable for small displacement motocross bikes commonly used (e.g., KTM 65 SX / 60 SX). Installed as a standard replacement, it mounts onto the sprocket and output shaft without major modifications to the swingarm or chain case.
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