This set of brake pads is meant to be used for the Tech-53 MK1-2-3 Big Brake Kit. This will fit both 256mm and 280mm versions. The BP-30 brake pads from Wilwood feature a medium-high friction compound with a good cold response. They offer smooth, predictable engagement with excellent control for a large range of applications. These Smart Pad BP-30 long-wear brake pads are easily bedded without abrasion on new iron or steel rotors.