>>1472316>- 2-piece cranks not made to be adjustable, so wider = more Compatibilityroad bikes use 2 piece as well and have low Q- factor. difference is that road ht2 dont "swing" outwards to add Q like you see on mtb. road ht2 pic rel crank goes straight pic rel.
Right now, mtbs have all the clearance then want and they are still increasing Q factor by pedals, cleats and cranks and thus making them even more uncomfortable to pedal at higher cadence (or any cadence), apperently its for stability at downhill but that was never such an important factor as is bar width, HA etc.