2004-2005 Honda TRX450R Factory Sevice Manual, Page 273Get this manual
15HYDRAULIC BRAKE
SYSTEM COM PON ENTS 152 FRONT MAS TER CYLINDER 15-10 FRONT BRAKE CALlPER 15-15 REAR MASTER CYLINDER 1517 REAR BRAKE CALlPER15-21 BRAKE PEDAL 15-27 BRAKE PADDiSC 15-8 SERVICE INFORMATION .15-3 TROUBLESHOOTING 15-4