RFX Race 13 Teeth Gearbox output pinionRef : RFX01218A / 1123278001

RFX Race Sprocket 13 Teeth — Manufacturer Reference: FXFS 41-13 55ST

Designed for motocross and roadster riders seeking a robust and precise component, this RFX front sprocket is CNC machined from alloy steel and then case-hardened to 60 Rockwell. Its high-precision manufacturing ensures tight tolerances for consistent engagement and controlled wear under demanding conditions. Some RFX models feature lightening holes to reduce rotating mass without compromising mechanical integrity.

• Material: case-hardened alloy steel
• Number of Teeth: 13 teeth (standard version)
• Chain Pitch: 520
• Color: silver
• Machining: CNC with tight tolerances

This 13-tooth Race sprocket is a reliable option for replacing a worn sprocket or for achieving precise torque delivery at the start and through corners. It fits 520 pitch transmissions and is particularly suitable for the mentioned machines such as SUZUKI DR-Z 400 SM, BETA JONATHAN 350, and KAWASAKI KLX 400 R (KLX400B). Installation and inspection by a professional are recommended to ensure proper alignment and chain tension.