What do you want for them cranks? They are beautiful. They just bolt on to a regular spindle like a Truvativ howitzer or whatever would fit a Giga-pipe? I don't know much about bottom brackets and what fits what. I've defiantly never seen this kind of Crank arm though. It looks like a 3 piece BMX crank. I might be interested in the Brakes and pedals too but for now I'd just like to get my hands on those cranks!