POWERVANE RACING ROTOR DISCS - 330mm x 32mm - 60mm Swept Pad - 12 Bolt - 7" PCD Out braking the competition A unique composition of Dampened Iron casting for Optimum rotor wear, balance, & reliability. * Brake fade virtually eliminated. * Exclusive vane design disperses heat & Gasses faster plus maintaining a clean pad surface. * Excellent performance /cooling characteristics. * Vanes serve to reinforce the rotor and guard against warping. * Angled curved Vanes direction of rotation L/H & R/H to further enhance performance. * Supplied to international rally car builders and formula racing teams, suitable for vehicles where power exceeds 500BHP. COMPBRAKE Trade Enquiries Welcome On 07-May-13 at 15:28:48 BST, seller added the following information:.