2001-2006 Honda TRX 300EX Sportrax 300EX Factory Service Manual, Page 276Get this manual
BRAKE SYSTEM Install new Oring into the base grooveInst811 the base onto the caliper
PA'IKING BRAKE BASE
Tigh ten the bolts to Ihe specified torqueTORQUE: 23 N'm 12.3 kgf-m17 IbHtJ