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Sprocket RFX Pro Series Elite Aluminium - 428

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RFX Pro Series Elite Aluminium - 428 SprocketRef : RFX00351A / 1123229001

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Description
Compatible motorbikes
Questions and answers

DescriptionRFX Pro Series Elite Aluminium - 428 Sprocket

Product details :

Features

RFX Pro Series Elite Sprocket - 428 (manufacturer part number: FXRS 35-46 99BU): a machined aluminum sprocket designed for motocross and off-road riding, tailored for demanding riders. Made from 7075 aluminum and CNC machined, it combines lightweight construction with precision manufacturing for reliable performance on muddy trails or circuits.

Material: CNC machined 7075 aluminum for high machining quality and reduced tolerances.
Number of teeth: 46 teeth – chain pitch 428.
Mud evacuation grooves: shaped to promote self-cleaning and limit dirt accumulation.
Laser-etched RFX logo and anodized finish in blue (brand color code, also available in silver).
Optimized CAD profile: removal of excess material to reduce weight without compromising rigidity.
Sturdy design with tight tolerances for better resistance to torsional forces.

Ideal for motocross training and racing, this sprocket fits 428 pitch sprocket-chain connections and common gear ratios. Compatibility indicated for 85 cc models such as YAMAHA YZ 85 and SUZUKI RM 85 (check fitment on your motorcycle before installation).

Technical information :

Reference

RFX00351A / 1123229001

No transmission chain

428

Number of teeth (crown)

Type of crown

Standard

Number of teeth

46 teeth

Material

Aluminum

Color

Blue

Compatible motorbikes

YAMAHA9 compatible models

YZ 80 LW BIG WHEELS 19/16 - 1994/2001YZ 80 - 1993/2001YZ 85 LW BIG WHEELS 19/16 (CB10) - 2005/2026YZ 85 (CB04) - 2001/2003YZ 85 (CB07) - 2004/2004YZ 85 (CB09) - 2005/2012YZ 85 LW BIG WHEELS 19/16 (CB05) - 2002/2003YZ 85 LW BIG WHEELS 19/16 (CB08) - 2004/2004YZ 85 - 2024/2026

SUZUKI2 compatible models

RM 85 BIG WHEELS 19/16 - 2002/2023RM 85 STD WHEELS 17/14 - 2002/2023