Hello everyone,

I am selling my Specialized S-Works Tarmac SL4 in frame size 56 with a special paint job. The bike recently had a derailleur hanger failure, which left the rear stays looking a bit unsightly. Due to this defect, the following parts were replaced:
- Original derailleur hanger
- New chain
- Like-new Vision wheels
- New derailleur pulleys
- New Shimano junction box (distribution unit)

Unfortunately, I have the problem that it shifts cleanly on the work stand, but it skips gears frequently when out on the road. I have absolutely no time to take care of it.
Shimano Ultegra Di2 gro...