Good build quality as expected from better Shimano groups.
Nice use of some Dura-Ace technology.
Wide gear range available: 11-32.
- Non-standard chain rings
- Fussy front derailer
Cable alignment tool may not report the optimal position with the cable near the center line.
- Rollers of the brake calipers will require more frequent and more thorough maintenance.
- Cables will get fuzzy
Recommend reading at least the lever and front derailer manuals.