RFX Pro Series HCS Steel - 520 SprocketRef : RFX01157A / 1123232004

RFX Pro Series HCS Steel Sprocket - 520 (Manufacturer's reference: FXRS 40-51 99ST) — a sprocket designed for demanding riders who want reliability and longevity without breaking the bank. Made from high carbon steel (HCS), it offers excellent wear resistance while maintaining a profile designed to limit excess weight compared to aluminum. Ideal for off-road or roadster use, it withstands rear-end stresses and muddy conditions thanks to its drainage grooves.

The CNC laser cutting and CAD design ensure precise machining and tight tolerances, allowing for good chain tracking and even wear. Its increased rigidity enhances its performance against torsional forces and changes in speed. A pragmatic choice for those seeking durability and performance on a daily basis or on the track.

• Material: High carbon steel (HCS)
• Number of teeth: 51
• Chain pitch: 520
• Color: Silver
• Manufacturing: CNC laser cutting, CAD profile, mud grooves

Suitable for cross and roadster machines; examples of compatibility include: SUZUKI RM-Z 450 (2026), RM-Z 250 (2026), and RMX 450 (2019). For installation, follow the instructions in the manual and adhere to the torque specifications and assembly procedure (cleaning the hub, applying thread locker, aligning the chain).