Are bottom brackets reverse threaded?

BSA bottom brackets are reverse threaded on the driveside to counteract this.

Do I need spacers on my bottom bracket?

Much like GXP, you don’t need to add any spacers to the bottom bracket if you have a 73mm shell, but you will need to add a 4.5mm spacer to the right-hand side of the crank axle, unless you’re using a chain guide, in which case a 2mm spacer is required instead, along with a 2.5mm spacer on the right-hand side of the …

Is the BB90 / 95 bottom bracket the same as a regular bottom bracket?

Aside from omitting the cups, the BB90/95 setup is functionally identical to conventional threaded bottom brackets, in that it uses the same bearings and the same bearing locations as before. Crankset compatibility is thus unchanged]

How are threaded thru spindle bottom brackets installed?

Threaded thru-spindle bottom brackets are comprised of a cup with a cartridge bearing. The bearings can be inboard or outboard of the bottom bracket shell. These bottom brackets are threaded into the frame and then the crank spindle is passed through the bearings. For service see Bottom Bracket Removal & Installation: Threaded.

What’s the difference between BB86 and PF30 bottom brackets?

Besides BB86/92 Press Fit there is also Press Fit 30. This is based on the BB30 Bottom Bracket. The quick creaking common with BB30 is not a problem with PF30 because the bearing shells balance play a lot better. To provide space for the plastic bearing shells, PF30 bottom brackets have a diameter of 46mm (compared to 42mm for a BB30).

What’s the best way to remove a bottom bracket?

There are many different designs and tool options. See Bottom Bracket Tool Selection: Threaded and Thread-Together to determine the correct tool. Insert the tool fully and remove the non-drive (left-side) cup by turning counterclockwise, holding the tool firmly to the cup. Remove any internal sleeve.