RFX Pro Series Elite Aluminium - 428 SprocketRef : RFX00423A / 1123237006

The RFX Pro Series Elite crown made of 7075 aluminum is a part designed for Cross practice: 46 teeth with a 428 pitch, CNC machining, and blue anodization for a durable and recognizable finish. Built to withstand muddy conditions, it features drainage grooves that limit dirt accumulation between the chain and the crown.

• Material: CNC machined 7075 aluminum
• Number of teeth: 46 (428 pitch)
• Finish: anodized blue color, laser-etched RFX logo
• Design: lightweight CAD profile and tight tolerances
• Functionality: mud drainage grooves to extend the lifespan of the chain and crown
• Type: standard, color code suitable for models

Ideal for mini motocross riders and the listed 85cc models, it is compatible with KTM 85 SX STD WHEELS 17/14 (2025), HUSQVARNA TC 85 STD WHEELS 17/14 (2025), and GAS GAS MC 85 19/16 (2025). Its rigid profile reduces twisting under load, and the tighter tolerances contribute to smoother transmission between the sprocket and crown — an asset for holeshots and acceleration out of corners.

Manufacturer reference: FXRS 51-46 99BU