From what I recall the rear calipers are different as the 256mm discs are vented, not solid. Have a look in the for sale section, turboboy is sellin a set of calipers only but you cab compare the pics to your own calipers. I believe you need calipers, carriers, discs and pads but I never bothered as all the stopping power is up front and you're better upgrading to the 312mm carriers/discs or the LCR Brembos.