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XT M8000 Rear Derailleur with STI Shifters?

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XT M8000 Rear Derailleur with STI Shifters?

Old 03-19-19, 02:15 AM
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ADAP7IVE
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XT M8000 Rear Derailleur with STI Shifters?

I have a perfectly functional mechanical XT Rear Derailleur I want to put on a drop-bar bike, but I'm not sure about shifting. Can they be shifted via current STI levers of any product line (105/Ultegra/DA)?
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Old 03-19-19, 04:55 AM
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Have a look at the Wolftooth Tanpan (https://www.wolftoothcomponents.com/products/tanpan) to allow you to shift the XT derailleur with 11 speed STI levers.
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Old 03-19-19, 07:09 AM
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The key thing to look for is "Dyna-Sys". Dyna-Sys shifters and rear derailleurs have a different pull amount that regular Shimano groups.

I use mountain Deore XT derailleurs on my tandems with standard road shifters regularly.

As for 11 speed components, I do not know.
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Old 03-19-19, 10:54 AM
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Originally Posted by ADAP7IVE View Post
I have a perfectly functional mechanical XT Rear Derailleur I want to put on a drop-bar bike, but I'm not sure about shifting. Can they be shifted via current STI levers of any product line (105/Ultegra/DA)?
Short answer is no. Starting with 10 speed MTB drivetrains (labeled as DynaSys), Shimano changed the cable pull such that the MTB and road shifters and RDs no longer work together. There are solutions including I believe Microshift shift levers. Theirs a lot written out there on compatibility, you just need to search for it. And hope what you want to do someone has already tried and documented. Best of luck.
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Old 03-19-19, 10:56 AM
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Originally Posted by Eggman84 View Post
Short answer is no. Starting with 10 speed MTB drivetrains (labeled as DynaSys), Shimano changed the cable pull such that the MTB and road shifters and RDs no longer work together. There are solutions including I believe Microshift shift levers. Theirs a lot written out there on compatibility, you just need to search for it. And hope what you want to do someone has already tried and documented. Best of luck.
Thank you very much!
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Old 03-19-19, 11:10 AM
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I use this derailleur with Microshift bar end shifters on a drop-bar bike. I'm not sure if that helps.
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Old 03-19-19, 07:31 PM
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Originally Posted by wgscott View Post
I use this derailleur with Microshift bar end shifters on a drop-bar bike. I'm not sure if that helps.
That is helpful, thanks.
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Old 03-19-19, 07:32 PM
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Originally Posted by bakerjw View Post
The key thing to look for is "Dyna-Sys". Dyna-Sys shifters and rear derailleurs have a different pull amount that regular Shimano groups.

I use mountain Deore XT derailleurs on my tandems with standard road shifters regularly.

As for 11 speed components, I do not know.
Missed your reply earlier, thanks for your help.
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Old 03-20-19, 02:58 AM
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I use Gevenalle shifters with T6000 Deore 10-speed Dynasis derailleur, there are 11 speed versions too:

https://www.gevenalle.com/product/gx/

Basically these are Microshift bar end shifters grafted on top of Tektro brake levers. Rode some 4000-5000km on them by now, they work like a charm. I've been in a crash so it's a bit scuffed up, and I had to replace the lever hood (which they sent free of charge, amazing customer service), shifting still works a treat regardless (I actually was 300km from home so I duct-taped it and it brought me home, eh). Super satisfied with how it works, tbh. The front derailleur is friction operated which works well since you can trim it, so you can have no rubbing even with a 3x, which I run, rear is indexed.

The only real con compared to STI levers is that you can't really shift from the drops, only from the hoods.
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Old 03-20-19, 07:05 AM
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Originally Posted by Branko D View Post
I use Gevenalle shifters with T6000 Deore 10-speed Dynasis derailleur, there are 11 speed versions too:

https://www.gevenalle.com/product/gx/

Basically these are Microshift bar end shifters grafted on top of Tektro brake levers. Rode some 4000-5000km on them by now, they work like a charm. I've been in a crash so it's a bit scuffed up, and I had to replace the lever hood (which they sent free of charge, amazing customer service), shifting still works a treat regardless (I actually was 300km from home so I duct-taped it and it brought me home, eh). Super satisfied with how it works, tbh. The front derailleur is friction operated which works well since you can trim it, so you can have no rubbing even with a 3x, which I run, rear is indexed.

The only real con compared to STI levers is that you can't really shift from the drops, only from the hoods.
I could have written this exact posting. I have Gevelalle (formerly Retroshift) "brifters" on all four of my 10-speed road bikes and am also completely satisfied with them. And, yes, I have ridden thousands of miles with STI and Campy Ergo brifters so I do have a basis for comparison.

The Gevenalle system is available in 9,10 and 11-speed and in both road and Dyna-Sys format and for both cable rim brakes and cable and hydraulic disc brakes and, incidentally, for Shimano IGH hubs. I just checked their web site and they now have brifters for Shimano and SRAM 1x12 systems.

A very versatile system that rugged, durable and less expensive than mid and high line STIs. It's also cheaper to upgrade. For example if I wanted to go to 11-speed on one of my bikes all I would need for shifting is the right side lever, not the entire brifter.
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