The Street > The Bike Shop
Transition Bottlerocket?
1664:
The advantage of a conc bb pivot is more than just the ability to run single speed, as you go through the travel your chain stay length remains constant, there's a reason the high end slope style bikes have it as well as the new s works demo.
master:
Like Bink said, the only reason to run a concentric BB pivot is the ability to run a SS drive train. Other than that it's just a funky bearing arrangement and not worth the tradeoffs.
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