EBC DP31920C 04-08 Porsche Boxster (Cast Iron Rotors only) 2.7 Redstuff Rear Brake PadsEBC DP31920C 04 08 Porsche Boxster (Cast Iron Rotors only) 2. 7 Redstuff Rear Brake Pads Product Information Low dust EBC RedStuff is a superb pad for fast street use and targets high HP imports, muscle cars and prestige European cars. EBC RedStuff ceramic pads reduce dust emitted by OEM pads by approx 80%. Redstuff pads also reduce rotor wear so that rotors and pads last longer while delivering great brake performance. For optimum lifetime in track