This has been discussed for offroad bikes but not (I think) for road stuff.
So what's the greatest advance? Clearly not this one but I'll start with Tulio Campagnolo inventing the quick release on Croce d'Aune (there's a statue there to commemorate it!).
So what's the greatest advance? Clearly not this one but I'll start with Tulio Campagnolo inventing the quick release on Croce d'Aune (there's a statue there to commemorate it!).