Bikes that have no gears/shifters, and no freewheel - the pedals are always spinning when the bicycle is moving. Note that fixed gear is not the same thing as singlespeed, which has its own tag.

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What tools should I carry around to replace the tube on a bike with bolt-on wheels while on the road?

I'm considering getting a fixed-gear bike for commuting, and I'm unclear on how one can quickly replace a punctured tube on a bike with bolt-on wheels. So far, all the bikes I've had (at least, since ...
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Purefix Kieren Pro

TL;DR FRAME: Kieren Pro (68mm BB) Which BB is suitable for this frame? (want to use SRAM s100 crank) If BB must be Truativ 108 or 113mm, how do adjust chainline? Thanks for your time and efforts ...