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What current Shimano STI shifters work with Ultegra 6703 triple derailleurs?

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What current Shimano STI shifters work with Ultegra 6703 triple derailleurs?

Old 02-04-16, 11:46 AM
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What current Shimano STI shifters work with Ultegra 6703 triple derailleurs?

What current Shimano STI shifters work with Ultegra 6703 triple derailleurs?
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Old 02-04-16, 11:52 AM
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You'll want a LH ST-6603 (external cables) or ST-6703 (cables under bar tape) lever.

RH doesn't matter.
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Old 02-04-16, 11:54 AM
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Are any of the current 105 or Tiagra shifters compatible?
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Old 02-04-16, 12:33 PM
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Old 02-04-16, 12:55 PM
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Originally Posted by Barrettscv
Are any of the current 105 or Tiagra shifters compatible?
Current? No. The last generation 105 and Tiagra (5700 and 4600) will work though.
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Old 02-04-16, 01:27 PM
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Originally Posted by Barrettscv
Are any of the current 105 or Tiagra shifters compatible?
Nope. Tiagra 4700 still offers a triple front shifter, but their rear shifter isn't compatible with SIS (most 7-10 speed Shimano road). It's a funky 10-speed version of Shimano's 11-speed index system.

105 5800 is 2 x 11 only.

as [MENTION=391827]dr_lha[/MENTION] says, get a last-generation 10-speed shifter. You can still find it on sale at many retailers.

Or, get new 4703 shifters and RD. The front 4703 shifter will still work OK with the 6703 FD and crank.

Another word of caution: apparently, Shimano has slightly changed the brake cable pull of its newest groups as well. You may not notice with older Shimano calipers, or maybe you would. I haven't tried it myself.
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Old 02-04-16, 01:33 PM
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Originally Posted by Tim_Iowa
Another word of caution: apparently, Shimano has slightly changed the brake cable pull of its newest groups as well. You may not notice with older Shimano calipers, or maybe you would. I haven't tried it myself.
SLR-EV is the new brake system from Shimano, which has a different pull from previous (Super SLR?). It's only on 9000, 6800 and 5800 (maybe 4700? I'm not sure), none of which work with a triple, so it's not going to be an issue.

Originally Posted by Tim_Iowa
The front 4703 shifter will still work OK with the 6703 FD and crank.
Do you know this for a fact? I know that the design of the Tiagra triple FD looks similar to the 6700 one, but I don't know if the pulls are compatible.
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Old 02-04-16, 01:44 PM
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Originally Posted by dr_lha
SLR-EV is the new brake system from Shimano, which has a different pull from previous (Super SLR?). It's only on 9000, 6800 and 5800 (maybe 4700? I'm not sure), none of which work with a triple, so it's not going to be an issue.
That's why I mentioned it, because I suggested the OP goes to a partial 4700 group, which does offer a triple and probably uses SLR-EV.

Originally Posted by dr_lha
Do you know this for a fact? I know that the design of the Tiagra triple FD looks similar to the 6700 one, but I don't know if the pulls are compatible.
I've heard no contrary evidence on any bike forum I frequent.

But, I don't know it for a fact. The only experience I have with 4700 is building up new bikes at the shop, which always have complete groups.

Personally, I don't mess around with front STI shifting on a triple (always sucks, from my experience). I prefer bar-ends for triple cranks.
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Old 02-04-16, 01:50 PM
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Originally Posted by Tim_Iowa
That's why I mentioned it, because I suggested the OP goes to a partial 4700 group, which does offer a triple and probably uses SLR-EV.
Actually from my poking around I believe that Tiagra 4700 uses Super SLR, not SLR-EV.

Straight from the horses mouth:

https://bike.shimano.com/content/sac-...0/br-4700.html
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Old 02-04-16, 01:52 PM
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Originally Posted by dr_lha
Actually from my poking around I believe that Tiagra 4700 uses Super SLR, not SLR-EV.
Cool, thanks for clarifying.

What a weird, not-quite-standard group Tiagra 4700 is. They seem like good components when used as a homogenous group, but not very compatible with Shimano's legacy components.
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Old 02-04-16, 02:01 PM
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Originally Posted by Tim_Iowa
Cool, thanks for clarifying.

What a weird, not-quite-standard group Tiagra 4700 is. They seem like good components when used as a homogenous group, but not very compatible with Shimano's legacy components.
It gets worse. I found this Shimano Compatibility Guide. Looks like the new Tiagra Triple is only compatible with it's own FD, and not only that but it also suggests that the double is only compatible with the 4700 double front derailleur also, and not with the 5800 or 6800 ones. Looks like Tiagra 4700 truly stands alone.

https://productinfo.shimano.com/download/pdf/com/2.5/en
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Old 02-05-16, 02:41 PM
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The Tiagra 4700 double front derailleur is different from other 10-speed stuff, but I heard when the group was released that the triple FD was the same as other 10-speed stuff, and I even asked a Shimano guy at Eurobike last September this specific question and he said the same thing - the cable pull of the triple front shifter and FD hadn't changed.
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