The Altena, for example (again, this likely applies to others. I speak of the Altena as an examole because I have experience building one), comes with a common 31.6 seatpost size. You can get a setback post in that size, if needed. It comes with a standard 1 1/8 threadless fork, so the range of headsets, and stems will work. Regular, standard BB shell. The frame comes in two sizes. Mine is an L with a 55.5cm top tube. When it comes to parts, there is nothing funky, arcane or proprietary so customization is perhaps even easier and wider ranging than a
PR.
Originally Posted by
prathmann
One thing that helps the BF
PR is that a certain amount of customization is available with the tubing lengths and stem to match the size of the rider while most folding bikes are 'one size fits all'. Fine if that size really does fit you well but sometimes it doesn't. The Altena and some of the other bikes mentioned look like they'd be good competitive road bikes provided they are a good fit to the particular rider.