Steel front sprockets are precision manufactured and induction hardened to precise tolerances to improve concentricity and provide a stonger, quieter and longer-lasting sprocket
Plated to resist corrosion
Rear sprockets are available in F5 PTFE-coated aluminum and steel
F5 PTFE black aluminum sprockets are built for endurance and is hard anodized with jet black dye, then coated with PTFE for added lubricity
Steel rear sprockets are made from carbon steel and electroplated with a satin black finish that resists corrosion; teeth are hardened so sprocket will hold up to many miles without affecting strength