BB90/BB95 bottom bracket
BB90/BB95 is a press-fit standard: the bottom bracket shell is smooth on the inside. You recognise a BB90/BB95 frame by a shell 90.5 or 95 mm wide with an inner diameter of 37 mm.
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Sizes of a BB90/BB95 bottom bracket shell
90.5 or 95 mm
Shell width
37 mm
Inner diameter
smooth, no thread
Inside of the shell
Frequently asked questions
CEMA has BB90/BB95 bottom brackets for Shimano and SRAM GXP cranksets.
Measure the bottom bracket shell: on BB90/BB95 it is 90.5 or 95 mm wide, with an inner diameter of 37 mm.
A BB90/BB95 shell is 90.5 or 95 mm wide, with an inner diameter of 37 mm. The bearings are pressed straight into the frame. A BB86/BB92 shell is 86.5 or 92 mm wide, with an inner diameter of 41 mm. There, the bearings sit in a cup that is then pressed into the frame. More about BB86/BB92 →
Still not sure?
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