Can a rear derailleur " Shimano Deore XT RD-M781-SGSL" work Singletracks Mountain Bike News, Reviews, MTB Trails and Community › Protected: Forums › Mountain Bike Forum › Can a rear derailleur " Shimano Deore XT RD-M781-SGSL" work Tweet Add to Flipboard Magazine. Tagged: Shimano, XT Viewing 2 reply threads Author Posts June 9, 2015 at 12:00 #127348 Nicolas Harel Can a rear derailleur " Shimano Deore XT RD-M781-SGSL" work with "DEORE XT M8000 11 gear cassette?? June 12, 2015 at 12:57 #127349 gar29 I wouldn’t think so, it’s a 10sp derailleur. The 11sp XT is the M8000. I don’t believe the 10sp derailleur will have the range to cover all of the cogs. Someone jump in here if I’m wrong 😃 June 12, 2015 at 13:17 #127350 schwim ✓ supporter I’ve read that the Shimano brand can not exchange between 10 and 11 speed. Author Posts Viewing 2 reply threads You must be logged in to reply to this topic.