Rotor

180mm: This is the main rotor we use for our bikes. (NOTE: In the event that a wrong part is ordered from Cyrusher&';s website, and the package has been shipped out, the customer will be required to pay the original shipping cost (including cancellation fees from the shipping company), plus the new shipping cost for the correct part (paying for the cost of the part is not needed, only shipping costs). Questions about the part&';s compatibility with your bike? Please call us before ordering: 385-382-1622.) The rotors are made of Aluminum. They are used for both the front and the rear brakes. (Note: this product is sold as 1 piece, not as a set).