Alternate title: "Fred wants to swap Di2 onto his non Di2 bike" Totally agreed though. I'm a cyclist and DIY is pretty simple, even on Di2. It's just that the

Alternate title: "Fred wants to swap Di2 onto his non Di2 bike" Totally agreed though. I'm a cyclist and DIY is pretty simple, even on Di2. It's just that the author of this thread got in way over their head and wanted to do something that isn't straightforward... I wouldn't even call it maintenance. This is like the euqivalent of wondering why you can't swap your FWD Civic to AWD without a mechanic's help. This Di2 Dura Ace drivetrain sells for what, $4,000? And he's putting it on his entry-level gravel bike. He's confused about fully internal routing maintenace costing more? It's way harder to do internal routing but gives aero gains and looks nice. It's very much a "top tier bike" kinda thing. Like being surprised that your Ferrari costs more to do an oil change. It scares me that OP is a former bike shop mechanic and doesn't get this. It's not that bikes are getting too hard to work on, it's that the $12,000 bike he's trying to part out to add to his entry-level 'prosumer' gravel bike just doesn't make any sense. If you want a top tier bike that's easy to work on, Specialized Aethos is great.