Giant Trance hub bearing replacement. The standard hub for the Giant X3 2009 is listed as:
Front:Giant FR 15mm Thru axle front
Rear:WTB Laser Trail Disc rear
The bearings required for replacement are:
Front: 6804RU x 2 (Also found as 6804 2RS, 61804 2RS. 2RS = 2 Rubber Seals. RU = Single Rubber Seal. RU bearings are hard to find – order the 2RS unit and if required remove the extra seal.)
ID:20, ID:32, W:7
Rear (Brake Disc Side): 6803 x 1
ID:17,OD:26,W:5
Rear (Gear Side): 6000LB x 1
ID:10, OD:26, W:8
(6000 is the most common types, LB are hard to find. LB – The “LB” seal is a non-contact seal for reduced torque or higher speed requirements. From here)
I have bought many replacement bearings from this auction fom revolve_bearings_and_pt on ebay