Man that was hard, so for anyone else that finds this maybe through google or something. Suzuki 250r 1988 seems to have the parts needed.
http://www.partspitstop.com/pages/OemParts#/Suzuki/LT250R_%281988%29/REAR_CALIPER_%28MODEL_F%2f%2fG%29/01340004/5601340067
For google: Yamaha Banshee caliper pins, caliper bolts, brake bolts, YFZ350 caliper bolts, YFZ350 Caliper pins.