RFX steel - 420 13 teeth Output sprocketRef : RFX01726A / 1130241001

Steel Output Sprocket - 420 13 Teeth by RFX

Front sprocket designed for motocross, CNC machined from high-strength steel and hardened to 60 Rockwell degrees for enhanced wear resistance. The self-cleaning grooves and black zinc finish facilitate maintenance and limit light corrosion after washing.

Design and Materials

• CNC machining with tight tolerances for a precise tooth profile and consistent chain engagement
• High-strength steel hardened to 60 Rockwell degrees to increase durability against wear
• Lightening holes designed to reduce mass and improve transmission responsiveness
• Mud evacuation grooves on both sides to limit dirt accumulation and extend the lifespan of the sprocket and chain
• Black zinc finish to limit light corrosion and maintain a neat appearance

Practicality and Features

• 13-tooth gearing suitable for transmissions using a 420 chain
• Machining and dimensional repeatability for consistent replacement between sprockets of the same reference

Advantages

• OEM Reference FXFS59-1399BK
• Product photos provided to verify profile and finish before installation

Examples of Compatible Motorcycles

• KTM 65 SX (2027)
• HUSQVARNA TC 65 (2027)
• GAS-GAS MC 65 (2027)

Complete list of compatible motorcycles available in the dedicated section below