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Join Date: Dec 2020
Posts: 288
Bikes: Bianchi Nyala, Bianchi Volpe, Bianchi Campione D'Italia, Trek 640, Luxus folding bike, Schwinn Speedster, Bianchi Torino, KHS Aero Sport, probably something else around here somewhere
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They'll work fine. The indexing comes at the lever, not the derailleur. The only concern is if the "throw" -- the amount of travel for a given gear change -- matches, which is why Dura-Ace won't work. It's a different throw.
I'm currently running micro-shift indexed 10-speed bar-ends, a Suntour Lepree front derailleur and a first-gen Deore rear derailleur and it all shifts very nicely. The indexing works perfectly.