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  1. What bb fits this. That’s not octalink. I’m confused. BMX has so many variables

    Beauty cranks. Ima need a smaller ring though. I’m not racing anybody

  2. IntoxicatingVapors on

    That’s crazy cool. I’ve only seen that splined bottom bracket on the 70s Shimano Selecta and Adamas cranks. Lots of very forward thinking and neat technology in the design but the execution was kind of crappy. There are still [BSA cups](https://ebay.us/m/YIRZeV) available, and I see the bbs for the Selecta and Adamas available, but they’re usually with cups for Ashtabula bb shells, and some have the front freewheel mechanism as well. I think you could probably cobble together something that could fit onto a standard MTB frame.

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