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Sprocket RFX Pro Series Elite Aluminium Rear Sprocket - 415

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RFX Pro Series Elite Aluminium Rear Sprocket - 415 SprocketRef : RFX01033A / 1123242001

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Description
Compatible motorbikes
Questions and answers

DescriptionRFX Pro Series Elite Aluminium Rear Sprocket - 415 Sprocket

Product details :

Features

RFX Pro Series Elite Aluminum Sprocket - 415 (Manufacturer part number: FXRS 57-38 99BU): a sprocket designed for motocross, machined to reduce weight while maintaining good rigidity. Designed for 415 pitch transmissions and equipped with 38 teeth, it is aimed at 50cc riders and lightweight machines looking for a reliable and aesthetic part.

Material: CNC machined 7075 aluminum.
Number of teeth: 38 teeth (415 pitch).
Finish: blue anodizing, laser-engraved RFX logo.
Design: CAD profile for weight reduction and rigid design to limit twisting.
Terrain maintenance: mud evacuation grooves to extend the lifespan of the chain and sprocket.
Color compatibility: brand-coded but also available in standard silver.

Mounting: standard type for 415 transmission, fits as a replacement for a 38-tooth sprocket. Ideal for motocross use where resistance to twisting and mud evacuation are sought.

Examples of compatible motorcycles: KTM 50 SX (2025), Husqvarna TC 50 (2025), GAS GAS MC 50 (2025). Please check the exact compatibility with your model before installation.

Technical information :

Reference

RFX01033A / 1123242001

No transmission chain

415

Number of teeth (crown)

Type of crown

Standard

Number of teeth

38 teeth

Material

Aluminum