The dimensions needed to fit these caliper are described below, there are 3 main dimension,

“X” the P.C.D (the distance between the 2 bolts)

“Y” the offset measured from the centre line of the disc.

“Z” this can be described as a plain, the distance from where the caliper mounts to the centre of the disc. This is sometimes known as the “PL” dimension. At Hi-Spec this is never the diagonal distance to the mounting point.

Monster 4 310mm to 340mm