I bought the 250r over 10 years ago used from a person in another state. None of the brakes were working all that great so I figured it was time to rebuild them all. The fronts were pretty standard but then when I got to the rear the caliper doesn't seem like it is stock. Can some one identify which brake caliper it is so I can buy a rebuild kit and pads for it? It is a single piston caliper and the pads were more square shaped.