FIR offers a complete range of front and rear sprockets. The perfect fit together with the drive chains. The front sprockets are grooved and ultra-light and are the top level quality sprockets. Manufactured from low corrosion SCM435 Ni-Chrome Molybdenum steel, featuring a low carbon core to prevent breaking while the case hardened surface offers maximum wear resistance. Precision CNC machining ensure a perfect fit and the lightweight design including lightening holes offer ultimate performance.
