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

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