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Sprocket RFX Pro Series Elite Aluminium - 420

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RFX Pro Series Elite Aluminium - 420 SprocketYAMAHA 65 YZ 65 - 2017 - 2026Ref : RFX00366A / 1123230003

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Description
Compatible motorbikes
Questions and answers

DescriptionRFX Pro Series Elite Aluminium - 420 Sprocket

Product details :

Features

RFX Pro Series Elite Aluminum Sprocket - 420 (Manufacturer Part No: FXRS 37-46 99BU)

Designed for motocross, this RFX Pro Series Elite sprocket is CNC machined from 7075 aluminum and tailored for demanding riders. Its blue anodized finish and laser-etched RFX logo add a racing touch while remaining functional. The CAD-optimized profile reduces weight without sacrificing rigidity, providing a responsive gear ratio and a direct feel at the start and during acceleration.

Material: CNC machined 7075 aluminum
Number of Teeth: 46 teeth (46)
Chain Pitch: 420
Type: standard, blue anodized
Mud evacuation grooves to limit chain/sprocket abrasion and extend lifespan
Stiff design for better torsional resistance and tight tolerances for more precise transmission
Color code according to brand and availability in standard silver

Compatible with setups using the 420 standard and suitable for smaller motocross bikes like the YAMAHA YZ 65 (2024-2026). Simple installation as a standard replacement: check alignment and chain slack during installation.

Technical information :

Reference

RFX00366A / 1123230003

No transmission chain

420

Number of teeth (crown)

Type of crown

Standard

Number of teeth

46 teeth

Material

Aluminum