BB86/BB92 bottom bracket
BB86/BB92 is a press-fit standard: the bottom bracket shell is smooth on the inside. You recognise a BB86/BB92 frame by a shell 86.5 or 92 mm wide with an inner diameter of 41 mm.
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Sizes of a BB86/BB92 bottom bracket shell
86.5 or 92 mm
Shell width
41 mm
Inner diameter
smooth, no thread
Inside of the shell
Frequently asked questions
CEMA has BB86/BB92 bottom brackets for Shimano, SRAM GXP, CAMPA UT, SRAM DUB and FSA386/Rotor/Raceface 30mm cranksets.
Measure the bottom bracket shell: on BB86/BB92 it is 86.5 or 92 mm wide, with an inner diameter of 41 mm.
A BB86/BB92 shell is 86.5 or 92 mm wide, with an inner diameter of 41 mm. A BB89 shell is 89.5 mm wide, with an inner diameter of 41 mm. More about BB89 →
A BB86/BB92 shell is 86.5 or 92 mm wide, with an inner diameter of 41 mm. A BB386 shell is 86.5 mm wide, with an inner diameter of 46 mm. More about BB386 →
The CEMA Interlock bottom bracket system joins both sides of the bottom bracket inside the frame with a threaded connection. That aligns the bearings precisely, which prevents unwanted movement and wear. The cups stay firmly in place, resulting in a stable, creak-free solution with efficient power transfer and a longer service life for the components. The bearings can be replaced once they are worn. The press-fit cups are a classic press-fit solution.
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The bottom bracket finder takes you to the bottom bracket that fits your frame in a few questions.
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