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Sprocket RFX Pro Series Elite Aluminium - 428

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RFX Pro Series Elite Aluminium - 428 SprocketRef : RFX00501A / 1123247001

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Description
Compatible motorbikes
Questions and answers

DescriptionRFX Pro Series Elite Aluminium - 428 Sprocket

Product details :

Features

RFX Pro Series Elite Aluminum Sprocket - 428 (Manufacturer Part No: FXRS 81-52 99BU)

Designed for motocross competition, this RFX Pro Series sprocket is CNC machined from 7075 aluminum to provide an excellent balance between lightweight and durability. Its 52-tooth design with a 428 pitch is aimed at small displacement and motocross bikes where weight and chain responsiveness are crucial.

Material: CNC machined 7075 aluminum
Number of teeth: 52 (428 pitch)
Mud evacuation grooves to protect the sprocket and chain
Laser-etched RFX logo
CAD-optimized profile for lightweight and rigid design limiting torsion
Color: anodized blue (brand coded); also available in silver
Tight tolerances for better chain/sprocket contact

Ideal for motocross riders and mechanics looking to replace a worn sprocket without adding weight to the rear wheel. Specifically compatible with the listed TM RACING MX 85 models (JUNIOR and MX 85 versions depending on year and setup). Check the pitch and tooth count compatibility with your front sprocket before installation.

Technical information :

Reference

RFX00501A / 1123247001

No transmission chain

428

Number of teeth (crown)

Type of crown

Standard

Number of teeth

52 teeth

Material

Aluminum