RFX Race Sprocket 13 Teeth — Manufacturer part number: FXFS 43-13 55ST
Specifically designed for motocross, this RFX Race front sprocket with 13 teeth is made from case-hardened alloy steel. CNC machined with tight tolerances, it features a hardness of 60 Rockwell to provide excellent wear resistance and increased longevity of the engagement surface. Its silver finish and standard version make it a sleek and robust replacement for the original part.
Main features:
- Number of teeth: 13
- Chain pitch: 520
- Material: case-hardened alloy steel
- Finish: silver
- Machining: CNC with tight tolerances
- Hardness: 60 Rockwell case hardening
- Version: Standard (some models feature lightening holes)
Ideal for riders looking for a reliable front drive part for their 520 chain. Common applications: SUZUKI RM-Z 250 (2024, 2025, 2026). This part is designed for competition/trail use while adhering to industrial machining and heat treatment standards.