It’s funny that the high end (human powered/“analog”) bikes tend to actually be pretty good at this. Want to change your $5k+ bike from 11s to 12s? Yep, should be doable — you’ll need to replace group set and possibly the rear hub, but it’s totally possible.
Upgrade from cable to electronic shifting? Again, totally doable.
Switch from Shimano to SRAM or Campy? Yep, should be possible.
Now, if you crack your carbon frame…well, that’s another story.
It’s funny that the high end (human powered/“analog”) bikes tend to actually be pretty good at this. Want to change your $5k+ bike from 11s to 12s? Yep, should be doable — you’ll need to replace group set and possibly the rear hub, but it’s totally possible.
Upgrade from cable to electronic shifting? Again, totally doable.
Switch from Shimano to SRAM or Campy? Yep, should be possible.
Now, if you crack your carbon frame…well, that’s another story.