You have a GXP crankset. What bottom bracket standard is your bike?



Refer to our GXP bottom bracket compatibility guide below to determine the BB option that is most suitable for your bike. Featuring a one-piece design, BBInfinite’s road bike bottom brackets deliver consistent shifting and drivetrain performance as you ride. We set our GXP (Giga X Pipe bottom brackets) to the narrowest stance allowed by the crankset, ensuring the maximum amount of spline engagement between the spindle and non-drive crank arm. Additionally, our modules are constructed with a flange-less drive side, making them completely compatible with your bike power meter. 

Now that you have entered the GXP compatible crank set standard installed on your bike, or the crank set standard you intend to install on your bike, you may select the appropriate road bike bottom bracket standard of your bike to jump directly to the GXP BB you desire:

The possible GXP compatible road bottom bracket standards are:

BBRight (79mm)

BB86 (86.5mm)

T47 Internal

T47 External (68mm)

BSA English Threaded (68mm) 1.37 x 24TPI

Italian Threaded (70mm) 36mm x 24TPI

PressFit30 (68mm)

PressFit30A (73mm)

BB30 (68mm)

BB30A (73mm)

BB386EVO (86.5mm)

Trek BB90

Specialized OSBB (61mm)

Note: If you have any questions, or need help identifying your GXP bike bottom bracket standard, please call our Customer Service line: 866.865.3335. Additionally all GXP bottom bracket installation instructions can be found in the product page by following the link. 

Or email us: 

Thank you.


Bottom Bracket Selection Guide