Roubaix SL8 Sport 105 (12sp 105 mechanical) = $3500
Roubaix SL8 Comp (12 sp 105 Di2) = $5000
Aside from paint jobs, these two bikes seem like they are otherwise identical:
https://www.specialized.com/us/en/co...=355681-218669
If I bought the sport model but wanted to upgrade to Di2, I think I would just need new shifters, front and rear derailleurs. Can I use the same crankset, cassette, chain? What else would I need?
105 FD-R7150 Di2 front derailleur = $112
105 RD-R7150 Di2 rear derailleur = $205
105 R7170 shifters (pair) = $483
That's only $800, plus I could sell off the mechanical 105 stuff. Am I missing something?