My solution is to move the Dura-Ace components from the Focus Paralane over to the new Specialized Aethos, then get a cheaper set of components for the Focus Paralane. Previously I splurged on Dura-Ace components for the Focus Paralane, because it was my only
road bike which doubled up as an all-weather commuting bike. Also, Dura-Ace 12 speed was more readily available than Ultegra 12 speed at that time (early 2022).
Now that I have the
Aethos as the pure road bike, I didn't feel the need to put the best components on the Focus Paralane. This was why I chose the 12 speed Ultegra Di2 components to replace the Dura-Ace Di2 components on the Focus Paralane.
I will be moving the Dura-Ace
RD-R9250 rear derailleur and
FD-R9250 front derailleur over, while I will
not be transferring the
Dura-Ace shifters and brakes as it is too troublesome to uninstall and reinstall them again on the Aethos. The hydraulic hose length might not be long enough which would require a hose change as well. I would rather do a fresh, hassle-free, Shimano J-Kit installation of new shifters and brake calipers on the Aethos.
Here are the new Ultegra Di2 rear derailleur and front derailleur!
Ultegra Di2 RD-R8150 12 speed rear derailleur