Bottom bracket bearings will wear out eventually and need to be replaced every so often. The BBT-30.4 is a bottom bracket tool designed to remove and install bottom bracket bearings. It is designed to work with BB30, PressFit 30, 386EVO, BBright, and PF121 bottom bracket systems. The BBT-30.4 comes with two bushings that work with a head cup press to press in the BB30 and PF30 bearings into the bottom bracket shell.
Removes multiple types of bearings like BB30, PF30, 386EVO, BBright, and PF121
Includes two bushings that work with a head cup press
Bought this before doing my first ever BB30 cartridge bearing replacement. Knocking out the existing cartridges required more force than expected, but hammer to the rescue :-) I don't have the proper bearing press tool (because $$$$!) but my improvised tool with some allthread, nuts and large washers worked well in conjunction with the metal guides that come with the BBT-30.4. Still needed the hammer, but hey, it's in now. It's hard to describe the silent join of new bottom bracket bearings until you've enjoyed the before&after, and it's even better if you put the work in yourself. I was surprised that it took me <30 minutes including crank removal etcetera, using this tool.
Make sure to align and seat everything and then give a couple of good hits with a mallet (maybe more if it's been in there awhile). Might back the frame up with a leg or have someone hold the bike. Not the most graceful tool but it gets the job done. Adapters for installing included, but you will need a bearing press to install correctly.
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