Precision balanced to insure smooth operation with no pedal pulsation OEM style vane configuration provides more efficient heat dissipation, reduces vibration that can cause noise, and extends rotor life G3000 heat-flowed castings provide consistent wear, long life, and quiet operation Bi-metal aluminum and zinc clean-look coating/Alutherm 80 extends the life of the rotor and provides a clean look for today's open wheels International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.