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• #2
There's so few parts in a bottom bracket, there's really very little room for improvement. Just get a SRAM one
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• #3
Praxis
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• #4
The only improvement over a normal BB is one with enduro bearings or ceramic bearings. I've got SRAM blackbox gxp bb, and I couldn't necessarily tell you the difference in quality.
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• #5
Royce
Who makes the better, higher quality and long lasting GXP Bottom bracket ? hmm