The all-new Shimano Deore XT M8100 series of derailleurs brings a new level of drivetrain silence thanks to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12-speed cassettes boosts range.
|MAX FRONT DIFFERENCE||0|
|MOUNT||Direct attachment (conventional)/Direct mount compatible|
|TENSION PULLEY BEARING||Sealed Bearing|
|GUIDE PULLEY BEARING||Sealed Bearing|
|NUMBER OF PULLEY TEETH||13|
|MAX LOW SPROCKET||51t|
|MIN LOW SPROCKET||45t|
|TOP NORMAL SPRING TYPE||Shimano Shadow RD+|
Nice upgrade from Deore, so quiet and quick shifting.
Perfect replacement. Sleek and beautiful design.
This is a beautiful piece of machinery. It works flawlessly and is easy to setup.
When there was no availability I ordered one of these on EBay from China and it never shifted correctly. I’m guessing it was an (expensive) counterfeit. I removed it today and put the new one from Thundermointainbikes today and it’s like butter. I have two of these from Thunder, so a fresh one and a spare. Along with the XTR chains that were on sale last week I’m set for a couple of weeks worth of crashes. 😂
They had the part I need it and processed and shipped ASAP. I was back on the bike in no time.
This was an upgrade on my Orbea OIZ H30 which came with a Shimano Deore RD-M6100 rear derailleur and shifter (I also upgraded to the XT shifter, which I purchased locally). The Deore XT parts perform much better - smoother, quicker shifting and a more solid feel overall, especially when downshifting. Definitely a good upgrade, and Thunder Mountain offered a competitive price and fast free shipping. I'm considering an upgrade to the XT cassette as well, but so far the change has been awesome already. 5 stars all around!