This kit converts your existing 160mm rotor into a 203mm contoured brake disc/rotor. All bicycle discs or rotors use an international standard 6 bolt center hub and the only thing you need to consider is whether to upgrade to a contoured as here or a full circle rotor.
The disc or rotor comes complete with a relocation bracket which again uses an international standard bolt spacing and repositions your stock caliper to align with the new oversize rotor. This kit will fit all fork types except manitou. If you have a Manitou fork.