Launched in late 2014, generation 3 BBs feature replaceable bearings

Bearings can be replaced on BSA threaded, PF30 and BB30 bottom brackets

Due to fit constraints BB92 bearings cannot be replaced as the bearing itself presses into the frame

To remove bearings, use a Park Tool headset cup removal tool

Slide the tool through the BB cup until it sits on the lip of the bearing

Tap the tool to remove the bearing

Remove the bearing and seal from the cup

Clean the inside of the cup with alcohol

To install the new bearing, lightly grease the inside of the cup

Lightly press a new 6806 bearing into the cup

Using a BB30 bearing press, press the bearing into the cup

Be sure the bearing goes in straight

Here we are using an Enduro tool, but tools for BB30/6806 bearings are offered by many major tool manufacturers

Press the bearing in until it stops against the back of the BB cup

Install the outer seal by pressing it into the cup

The red side of the seal will face out

Working around the outer diameter of the seal, tuck the lip of the seal into the groove in the BB cup

It may be necessary to use a tool to ensure the seal is fully seated in the groove

Wiggling the seal side to side in the cup can make it easier to seat the seal