Vortex Street Sprockets for BMW
Vortex steel front sprockets are precision-manufactured and induction-hardened to precise tolerances to improve concentricity and provide a stronger, quiter and longer-lasting sprocket. All sprockets are plated to resist corrosion and rear sprockets are available in F5 PTFE and CAT5. F5 PTFE black is built for endurance and is hard anodized with jet-black dye, then coated with PTFE for added lubricity. CAT5 are CNC-manufactured to the tightest tolerances with a unique tooth design and are colour anodized, which excludes the sweeps, mud grooves and teeth for a flash of colour.