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  1. #101
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    It doesn't help when installing hardware seem to be wrong kind. My(B-spec) XT brake levers doesn't have recessing inside them, what would be needed to put my, also B-spec, gear levers to them.

    It seems that idiotic Shimano has went and changed that system and doesn't even inform about it. These kind of things make ppl mad and make them run amok on the streets.

    Now I have to buy new covers with proper install-hardware just because allmighty Shimamo thinks that they can do anything and screw ppl.

  2. #102
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    Quote Originally Posted by RaikkuFIN View Post
    It doesn't help when installing hardware seem to be wrong kind. My(B-spec) XT brake levers doesn't have recessing inside them, what would be needed to put my, also B-spec, gear levers to them.

    It seems that idiotic Shimano has went and changed that system and doesn't even inform about it. These kind of things make ppl mad and make them run amok on the streets.

    Now I have to buy new covers with proper install-hardware just because allmighty Shimamo thinks that they can do anything and screw ppl.
    If theyre both B-spec, I believe they should work.. as isnt it the original i-spec with the new B spec which arent compatible?

    There should be a part number printed on your brake lever housing ending in a B "M785-B", you have that?

    That issue was brought up in this thread around May 2013... Luckily, I researched before I bought. And while I dislike Shimano changing the spec, Shimano doesnt sell directly to the public. The Bike Shops/Distributors are the ones that are responsible for informing customers on compatibility.
    Put a mountain biker in a room with 2 bowling balls and we'll break one and lose the other - GelatiCruiser

  3. #103
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    I-spec shifters

    I just received the new XT I-spec rear shifter and it came with two sets of mounting nuts & bolts. One connected it to perfectly to the M785 and the other the M785-B XT lever.

    No problem at all and the shifter looks and feels great. This seems like a great deal and shipping was free at $100.00. They also have XT-B brake levers for $32.00 each, which is another bargain.


    I-Spec rear shifter

    Evans Part # EV194486 NA-NA SL

    SHIMANO XT M870 I-SPEC-B 10S RH 1

    Price $44.59

  4. #104
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    I am looking to swap my SLX shifters to XT. Looking at my SLX brakes I do not have the "B" spec listed in the model....SLX BL-M675. After reading this thread and if I understand it correctly I can buy A spec or B spec. B spec is backwards compatible but A spec will not fit 2014 / "B" designated levers. At CRC the A spec is actually cheaper. Funny my 2014 Fuel EX8 29 does not have 2014 SLX brakes. I guess since it was an early release (bought June 2013) the 2014 components were not out.

    Shimano XT M780 10 Speed Trigger Shifter | Chain Reaction Cycles
    2014 Niner RIP 9
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  5. #105
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    I-spec

    Quote Originally Posted by stygz1 View Post
    I am looking to swap my SLX shifters to XT. Looking at my SLX brakes I do not have the "B" spec listed in the model....SLX BL-M675. After reading this thread and if I understand it correctly I can buy A spec or B spec. B spec is backwards compatible but A spec will not fit 2014 / "B" designated levers. At CRC the A spec is actually cheaper. Funny my 2014 Fuel EX8 29 does not have 2014 SLX brakes. I guess since it was an early release (bought June 2013) the 2014 components were not out.

    Shimano XT M780 10 Speed Trigger Shifter | Chain Reaction Cycles
    I believe the XT I-spec rear shifter that I just got from Evans should work on any of the shimano brake levers that have the hinged clamp.
    Non-B type levers will use the cylinder with internal threads. Similar to my M875-(A) type mated up. The B type have a different cylinder with a through pin. Both worked without issue!

    Good luck,
    JP

  6. #106
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    i have the new non ispec lever but im trying to mate a problem solver mismatch adapter to it. anyone have the threaded pin that will allow this to work?

  7. #107
    FM
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    Digging up this useful thread....
    Putting some new XT stuff on my bike...Turns out I have the newer b-spec brake levers and original i-spec shifters, which don't seem to be compatible.

    I see Artscyclery and others sell adapters (replacement top covers) to update older XT shifters to i-spec B... but they cost more than I paid for the shifters.

    The standards are so close I'm wondering if a dremel and some quality stainless metric nuts & bolts of the right size might be enough to make it work.

    Any thoughts?

  8. #108
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    XT Shifter spare

    Quote Originally Posted by mmartinez View Post
    You have to be sure to remove the piece of plastic between the covers of the shifter . If you don't do that the adapters are not going to going to fit .
    I killed the plastic plate... anybody know where I can get a replacment?

  9. #109
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    We the people ...

    Quote Originally Posted by FM View Post
    Digging up this useful thread....
    Putting some new XT stuff on my bike...Turns out I have the newer b-spec brake levers and original i-spec shifters, which don't seem to be compatible.

    I see Artscyclery and others sell adapters (replacement top covers) to update older XT shifters to i-spec B... but they cost more than I paid for the shifters.

    The standards are so close I'm wondering if a dremel and some quality stainless metric nuts & bolts of the right size might be enough to make it work.

    Any thoughts?
    That's what I did. I ended up with ipec A on the left shifter with ispec B levers and no hardware. Though even if I had hardware it wouldn't have fit anyways. I called around to more than a few shops with no luck. Most mechanics didn't know what I was talking about till I explained in detail too. Shakes head.

    Plan B. I bought a m5 screw and nut. You have to cut the tab off the ipec A shifter. Once that was done and cleaned up, I used a drum sander (dremel) and ground down on the lever till it was recessed enough to fit the nut. I also ground the nut down some so that I wouldn't have to take too much material out. I loctited the screw and then dosed it in some crazy glue for good measure. Oh, I also had to drill the hole in the shifter a lil bit, angling the hole to match the lever. It worked out, shifter is mounted securely. Now to finish the rest of this bike.

  10. #110
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    Quote Originally Posted by parkp81 View Post
    So I spoke with Shimano and they said the new "i-spec mounts/adapters", when released will be backwards compatible with models from 2011+ to current. Had to make sure since now I have a new i-spec lever on the left and the old i-spec lever on the right, .
    Alright, just to make sure I've got this right... If I have (SLX) M675 brake levers, I can fit (XT) M780-I-B to them? I ordered them then canceled them but have been going back and forth about this and just want to be sure about my decision.
    Thanks!

  11. #111
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    Quote Originally Posted by stygz1 View Post
    I am looking to swap my SLX shifters to XT. Looking at my SLX brakes I do not have the "B" spec listed in the model....SLX BL-M675. After reading this thread and if I understand it correctly I can buy A spec or B spec. B spec is backwards compatible but A spec will not fit 2014 / "B" designated levers. At CRC the A spec is actually cheaper. Funny my 2014 Fuel EX8 29 does not have 2014 SLX brakes. I guess since it was an early release (bought June 2013) the 2014 components were not out.

    Shimano XT M780 10 Speed Trigger Shifter | Chain Reaction Cycles
    Well this is my exact problem and I cannot find a for sure answer anywhere. I don't exactly understand what jwpeltier is saying. I don't think if you have an OG ispec shifter, that it will work with an ispec B lever though. I'm fairly confident that what we are trying to do will work.

  12. #112
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    XT brakes with i-spec shifters

    had the same setup and worked for me
    2014 TREK FARLEY
    2013 TREK RUMBLEFISH PRO
    2012 TREK SUPERFLY AL ELITE

  13. #113
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    Quote Originally Posted by bapski View Post
    had the same setup and worked for me
    Ok thanks!

  14. #114
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    In short ispec B shifters will work with ispec A levers, but not the other way around. However you can mod the ispec A shifters (to fit ispec B levers) by cutting off the tab on the ispec A shifter mount and using the ispec B shifter mounting hardware, ie. barrel nut and bolt. Worst case scenario you can mod an A shifter to fit B levers as I did in my above post.

  15. #115
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    Cripes this is a huge Shimano FU, what on earth are you thinking?? I love new bike tech and all, but getting stuff to fit these days is a bloody nightmare.

  16. #116
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    O dear, I have A spec shifters and Levers. My A spec leaver is leaking so had to purchase a replacement lever.. only ones available are the B spec leavers so I am going to have to get the dremel out.

    Why did Shimano feel the need to change the design!!

    Update; issue sorted.

    Got the dremel out and ground some metal away so that the nut from the A spec leaver fitted the B spec leaver, cut the tab off of the A spec shifter, replaced the bolt with a longer bolt and connected it all together.

    Job done.
    Last edited by Livewire88; 05-08-2014 at 02:05 PM.

  17. #117
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    Hey guys. I've been a part of this thread since Page 2. I've recently run into a rear brake issue and Shimano is sending a new rear brake. The problem as stated by Livewire is that shimano is only sending the I spec B model. I have the I spec A cover. So I might have to cut that tab out to make this pair up. I'm hoping they will send me a Ispec B cover (I asked). Anyways, Can I just use the ispec A hardware to mount it in place after I cut the tab off?

  18. #118
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    Quote Originally Posted by mmanuel09 View Post
    Hey guys. I've been a part of this thread since Page 2. I've recently run into a rear brake issue and Shimano is sending a new rear brake. The problem as stated by Livewire is that shimano is only sending the I spec B model. I have the I spec A cover. So I might have to cut that tab out to make this pair up. I'm hoping they will send me a Ispec B cover (I asked). Anyways, Can I just use the ispec A hardware to mount it in place after I cut the tab off?
    I am afraid it is not just a case of cutting the tab off, you will also have to use a dremel or other tool to create a recess on the inside of the clamp that holds the leaver to the handlebars, you will also need to source a slightly longer M5 bolt to use with the special nut that comes with the A type brake leaver to join the A spec shifter to the B spec leaver.

    A royal pain the the arse if you are not confident modifying things. I managed to get it all sorted and you wouldn't be able to tell the difference, (apart from the slightly different wording printed on the side of the fluid reservoir)

    If you need a more detailed description of what I had to do let me know and I will type something up and try and add some pics.

  19. #119
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    Damn Livewire... That does sound way too much for me to handle. Now I really hope that they send the ispec B cover or it looks like I'll have to go back to the conventional shifter clamp or spend $45 on a new ispec cover.

  20. #120
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    It's not hard to do. Just get some stainless hardware and it really is straightforward. I used a new m5 nut and screw.

    XT brakes with i-spec shifters-20140514_153700%5B1%5D.jpg

  21. #121
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    Yeah I can look for the M5 Nut and Screw at the local hardware store. How hard is it to dremel out the notch part in the lever? Can you post some pics?

  22. #122
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    It's not hard. I used a stone barrel sander like this one which was about the size of the nut. I ground it down till the nut was flush inside the clamp. Btw, a few posts above I wrote in some detail what I did.

    932 Aluminum Oxide Grinding Stone / Model: 932

  23. #123
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    I guess the nut washer that comes with the A spec (Which has more of a flat end to it wouldn't fit the B. Damn.. Why did they do this..... I think I can do this....

  24. #124
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    Co cut the tab off. Find the M5 Bolt and nut. Dremmel out the whole to sit the nut flush in the brake clamp. HMmmmmm.

  25. #125
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    Quote Originally Posted by bapski View Post
    looking forward for you reporting back how your install went.. am thinking of getting the i-spec adapters as well but the part about taking out the cables have me worried.

    thanks in advance.
    I have the A type for both brakes and shifters (2012 models) and bought the I-Spec A kit and wondering how it is possible to install without removing the cables? It is not as simple as just removing the indicators, removing the screws and swapping the cover. The instructions say the pin plate needs to be removed and without removing the pin plate the cover won't fit as its too shallow. I just opened up the gear shifter today for the first time trying to do this and ended up putting the old cover back on as I didn't want to remove any cables. Any answers on this would be much appreciated. Thx.

  26. #126
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    Upgrade from Deore M591 to XT M780 i-spec B

    hi all, I have just upgraded my shifters to XTs I-spec B and I captured it in a video. Let me know if you have any questions. BTW, love the XTs.

    https://www.youtube.com/watch?v=F7eM8Upd4kI

  27. #127
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    Same situation- a spec lever leaked, b spec lever arrived in the mail. So, I ordered the b spec cover, this is what is required to run a spec shifters on b spec levers, correct?

  28. #128
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    Does anyone want to sell me their bar clamp mount for the XT left shifter?

    There's no forward/backwards adjustment with the ispecs unless I move my brake levers.

  29. #129
    Who took my gears?
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    Does anybody know if it is possible to direct mount (i-spec-b) a new 11 speed shifter pod to an XT I-Spec-B brake? Currently I have an XT i-spec-b shifter mounted to an i-spec-b brake lever, and just want to upgrade the shifter/der/cassette/chain to 11speed without getting new brakes or adding a separate bar mount for the shifter. I really wish shimano would not have introduced the "B" stuff, just makes it really confusing.
    "You either want to or you don't."

  30. #130
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    I understand Shimano has introduced a third I-Spec standard with the new 11 speed XTR M9000 series, called I-Spec II and it isn't compatible with the previous I-Spec standards. So the answer would be no, but I'm only going by what I've read in the announcement material for M9000 and haven't actually had my hands on any of the kit, so someone who has may be able to confirm or suggest a workaround.

  31. #131
    Who took my gears?
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    Well f◊#$&! So basically I got royally screwed with the "b" standard crap. Only 1 model year for it. So if I need replacements they will be hard to find and probably more bank too.
    "You either want to or you don't."

  32. #132
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    Update - Here's someone from another thread who has tried what you want to do, and confirms it won't work out of the box, but seems to have found a workaround by machining the aluminium...

    New 2015 Shimano XTR 1x11

    The shifting of the new XTR M9000 is fantastic - typically smooth Shimano shifting.
    The new XTR SL-M9000 I-Spec II shifter is not compatible with any of the other Shimano XT M785 and below I-Spec brake levers. It appears to be only compatible with the XTR BL-M9000 brake lever at this stage.
    But were there is a will there is a way - machining aluminium.
    XT brakes with i-spec shifters-923050d1410593879-new-2015-shimano-xtr-1x11-xtr-shift2.jpg

  33. #133
    Who took my gears?
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    Quote Originally Posted by PerthMTB View Post
    Update - Here's someone from another thread who has tried what you want to do, and confirms it won't work out of the box, but seems to have found a workaround by machining the aluminium...

    New 2015 Shimano XTR 1x11
    Thanks! Hopefully by the time I get around to doing this someone like problem solvers has a product I can purchase to solve this problem! Thanks for the info, seems all hope may not be lost! For such a simple interface I have no idea why they need to keep changing the "standard".
    "You either want to or you don't."

  34. #134
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    I too have no idea why Shimano went from I-Spec A to B, except the B attachment method is more substantial so maybe they had issues with A not being strong enough?

    I-Spec II on the new XTR 9000 stuff allows rotational as well as lateral adjustment, which has been a big criticism of I-Spec A & B (although it never bothered me), so that must be at least part of the justification for introducing yet another standard.

  35. #135
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    XT brakes with i-spec shifters

    Quote Originally Posted by PerthMTB View Post
    Update - Here's someone from another thread who has tried what you want to do, and confirms it won't work out of the box, but seems to have found a workaround by machining the aluminium...

    New 2015 Shimano XTR 1x11



    Click image for larger version. 

Name:	923050d1410593879-new-2015-shimano-xtr-1x11-xtr-shift2.jpg 
Views:	7609 
Size:	119.5 KB 
ID:	934975
    That means the m9000 shifter with I spec II is not compatible with my m820 brake lever?? I remember reading somewhere that said it could be converted ...


    Sent from my iPhone using Tapatalk

  36. #136
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    Yup, The M9000 Shifter with the I-Spec II is not compatible with any of the old I-Spec designs. I just got my I-Spec II shifter today and it is mounted on to the shifter by sitting in the handlebar clamp well of the M9000 brakeset. I tried mounting it to a M987 brake lever and it wont fit as the new brakes have a different clamp design.
    So I've got to go get the bar clamp shifter now. I've tried every iteration and workaround, but there is no secure way to fit the shifter to the I-Spec B fitting.

  37. #137
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    Does anyone know if the XT I-Spec covers are exactly the same as the XTR I-Spec covers? Would an XT cover fit an XTR shifter and vice versa?

  38. #138
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    I was able to mount ispec b shifters on ispec a xt brakes. I used the clamp bolt that came with the brakes (they are the perfect length), nuts from toe clip bolts, and very narrow washers.

  39. #139
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    Quote Originally Posted by bigleg82 View Post
    I was able to mount ispec b shifters on ispec a xt brakes. I used the clamp bolt that came with the brakes (they are the perfect length), nuts from toe clip bolts, and very narrow washers.
    That's not the problem, its the other way round that's the issue - ie. I-Spec A shifters on I-Spec B brakes. And the B shifters should have come with the proper hardware to mount to A brakes.

  40. #140
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    Quote Originally Posted by juanbeegas View Post
    Does anyone know if the XT I-Spec covers are exactly the same as the XTR I-Spec covers? Would an XT cover fit an XTR shifter and vice versa?
    I'm looking for this info as well - anybody try it and confirm if it works?

  41. #141
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    I need a help: is it possible to convert SL-M670 to SL-M670ispec? If yes what parts do I need for?
    2015 YT Capra Pro Race LE
    2013 Specialized Stumpjumper FSR Comp 29er

  42. #142
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    XT brakes with i-spec shifters

    So is it possible to use ispec shifters with the regular XT BR-M785 brakes?


    Sent from my iPhone

  43. #143
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    Quote Originally Posted by rc mike View Post
    So is it possible to use ispec shifters with the regular XT BR-M785 brakes?
    What I-Spec?

    I-Spec A, I-Spec B or I-Spec II.

  44. #144
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    I assume B?




    Sent from my iPhone

  45. #145
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    Quote Originally Posted by rc mike View Post
    I assume B?
    For 11 speed you will need the SL-M8000-B-I which is currently not available, several shops list them but nobody has them in stock at the moment.

    http://si.shimano.com/php/download.p...0-B-I-3948.pdf

    For 10 speed you will need the SL-M780-B-I which shouldn't be too hard to find.

    http://si.shimano.com/php/download.p...0-B-I-3533.pdf

    I-Spec A shifters & I-Spec II shifters aren't compatible with your brake levers.

  46. #146
    OOOOOOOh Gee Are Eee
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    What a load of s**t. Shopping to build a bike and this is still a disaster.

    If I have iSpec B levers can I use them with i Spec II shifters? I assume no, which means Shimano now has 3 incompatible specifications in 3 years time with resellers selling parts from all 3 years simultaneously.

    SRAM's lever consolidation stuff is a bit awkward but a cakewalk comparatively.

  47. #147
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    Yep... your i-spec B levers are not compatible with I-spec II shifters unfortunately.

    Can you not exchange the shifters for an I-spec B version?

  48. #148
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    I have XT M8000 brakes and with an XTR M9000 11 speed trigger shifter, which came with the bar mount. What will I need to buy in order to combine the trigger/brake ? Sorry in advance if this was asked a hundred times already

  49. #149
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    Quote Originally Posted by 99mikegt View Post
    I have XT M8000 brakes and with an XTR M9000 11 speed trigger shifter, which came with the bar mount. What will I need to buy in order to combine the trigger/brake ? Sorry in advance if this was asked a hundred times already
    http://www.sjscycles.co.uk/shimano-x...40-prod37250/?
    http://www.sjscycles.co.uk/shimano-x...50-prod37245/?

    or separate parts

    Covers
    http://www.sjscycles.co.uk/shimano-x...30-prod37249/?
    http://www.sjscycles.co.uk/shimano-x...40-prod37244/?

    Brackets
    http://www.sjscycles.co.uk/shimano-x...00-prod37248/?
    http://www.sjscycles.co.uk/shimano-x...00-prod37243/?

    Integration bolt unit
    http://www.sjscycles.co.uk/shimano-x...60-prod37246/?

    Fixing bolt
    http://www.sjscycles.co.uk/shimano-x...00-prod37247/?

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