
RFX Pro Series Elite Aluminum Sprocket - 520 (Manufacturer Part No: FXRS 31-48 99BK)
Designed for motocross and roadster riders who demand durability and lightweight, this RFX Pro Series sprocket is CNC machined from 7075 aluminum and features a black anodized finish. Its CAD profile and tight tolerances minimize play and contribute to a more precise chain response, while the rigid design increases resistance to twisting under heavy loads.
Mounting suitable for 520 drive systems: it is aimed at riders looking for a durable and precise sprocket for road or track use. Examples of common compatible models: YAMAHA YZ 450 F (2026), FANTIC XX 125 (2022), HONDA FX 650 VIGOR (RD09) (2000).