Bottom bracket help.- Mtbr.com
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  1. #1
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    Bottom bracket help.

    I got a Sram X01 crankset from another forum member to use on my 2015 Range 7.4C but the bottom bracket it came with is too big. Does anyone know what model # Sram bottom bracket I need to run this crankset in my bike?

  2. #2
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    As I recall there's at least 2 versions of the X01 crankset; one of them comes with a 30mm diameter spindle (BB30) and the other is a 24mm spindle (GXP). If the crankset is the BB30 version I'm pretty sure you're out of luck, while bearing conversion kits do exist for the bottom bracket, the spindle is likely too short for the crank to clear the bearings and/or frame (BB30 bottom bracket shells are 73mm wide whereas the BB92 on your Range is 92mm wide).

    If it's a 24mm spindle on the crank, you'll need this.
    https://www.sram.com/sram/mountain/p...bottom-bracket

  3. #3
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    I found Hope Tech makes bearings for doing the conversion to 30mm shaft cranks that fit flush in the 41mm housing. My LBS is also looking into Enduro bottom brackets as well.

  4. #4
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    The bearings are the easy part, the problem is whether the BB spindle is long enough to fit properly. The BB92 bottom bracket shell puts the bearings almost 20mm further apart than a BB30 shell. The spindle may not fit properly in the wider spaced bearings, and even if it does you may run into chain line issues or crank to bearing spacing issues. It can be made to work, but there's a lot of potential compatibility issues that may require creative solutions.

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