RFX Pro Series Elite Aluminium - 428 SprocketRef : RFX00422A / 1123237005

Reference: FXRS 51-46 99BK — RFX Pro Series Elite aluminum sprocket - 428. Designed for off-road and motocross, this CNC machined sprocket meets RFX standards for mounting on a 428 transmission.

• Material: CNC machined 7075 aluminum, black anodization.
• Number of teeth: 46 teeth (optimized CAD profile).
• Chain pitch: 428, standard type.
• Machining: RFX logo laser engraved, tight tolerances for precise alignment.
• Design: mud evacuation grooves to preserve the lifespan of the chain and sprocket.
• Mechanical features: rigid design reducing deformation and lightweight profile to limit unsprung weight.

Designed for motocross riders and enthusiasts of competitive small-displacement bikes, this black sprocket easily integrates with 428 transmissions and offers a professional look thanks to its anodization. The CAD profile and CNC machining ensure reproducible geometry, useful in muddy conditions where quick evacuation is crucial.

Compatibility (examples): KTM 85 SX STD WHEELS 17/14 (2025), HUSQVARNA TC 85 STD WHEELS 17/14 (2025), GAS GAS MC 85 19/16 (2025). Check the number of teeth and chain pitch before installation.