the reason i ask the BB size is cause im trying to pick the right crank, on bens cycles website i want to get a crank from them since i have a return im sending back, but some cranks say to use with a BB size of xxx mm Thus me asking how to measure my stock one for reference. cause i want to make sure i buy/order the correct BB for the frame.

the frame is amazing, i love riding it as is. ill be keeping all the parts in the garage if i ever want to swap it out of fixed. to me im more than happy with the weight of the frame im sure if i rode something lighter i would be all over getting a different frame, but i have this one and not many do so it makes it unique and im not going to paint this frame everything about the frame will stay the same color and stickers so forth, just updating the rest.

i have the wheels and rear wheel/hub/cog and locking ring, my name shows noob but i've done reading on this site and im a member of many other sites so i know to read before asking.
thanks

and thanks to the others for info as well.