Pulled this 2017 Giant Reign SX. The Sram XO cranks that came off are 175mm and I want 165 max. I’d rather 160 or 155. However, I don’t know what BB Spindle this is, so I don’t know what cranks I can order. In these photos I’ve placed the XOs next to a BB30 road spindle for comparison. Obviously the BB30 is a larger diameter and (in road guise) narrower. The 2017 bike allegedly came with a Shimano PF BB, though there is a GXP BB of some sort.
So the game is… Name that spindle! So I can figure out what cranks I can replace these XOs with!
by DubyaEl