Steel front sprockets are precision manufactured and introduction hardened to precise tolerances to improve concentricity and provide a stronger, quieter and longer-lasting sprocket
Plated to resist corrosion
Rear sprockets are available in aluminum, F5 PTFE and CAT5
F5 PTFE black is built for endurance and is hard anodized with jet black dye, then coated ith PTFE for added lubricity