• No, the 11spd Di2 derailler that came out before 6870. Hmm, maybe it's the same and it's just the levers are different. No the FD is definitely a different shape. Actually, shit, maybe it's not and they're the same thing.

  • 6870 was the first 11 speed Ultegra di2 rear derailleur. 6770 was 10 speed di2 (etube).
    8050 is the new 11 speed di2 Ultegra one.

  • Right so I have 6870 shit and I want 8050 shit. No wonder the parts looked the same. I was googling the wrong frickin' number. 100% don't want any 10spd or dead DA stuff.

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