Campagnolo Potenza 11 Speed Shifters

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should be noted they arent compatible with all 11 speed groupsets, campagnolo type A ie Chorus/record & super-record require matching shifters ie ultra-shift whereas everything else is powershift apart from new Centaur which is yet another version as far as i know

Yes - you're right. I'd forgotten the difference between powershift and ultrashift.

These work with Powershift systems.

Because we get a lot of email about this at the Service Centre and just for clarity ref. the above:

Potenza is stand-alone, where shift levers and derailleurs are concerned, in the Campag range.
Centaur 11s is also stand-alone in these respects.

Shift levers and derailleurs 11s CH, RE and SR are interchangeable pre-2015.
Shift levers and derailleurs 11s CH, RE and SR are interchangeable post 2015.

There is no interchangeability in shift levers or / and derailleurs "across" the 2015 cable-pull ratio change (so you can't run a pre 2015 lever, say, with a post 2015 mech and get to-spec shifting).

Campagnolo 11s cassettes, chains and brakes are fully interchangeable across all 11s groups so long as derailleur capacities are respected.

There are some particular requirements around 11s cranksets.

1. In 2015 with the change to 4-arm, chainring spacing changed and that gives "OK" shifting with pre 2015 levers / mechs but it is not optimal.
   
2. In order to correctly optimise for 135mm back end / to change chainline, Campagnolo changed the chainring spacing again in 11s HO cranksets, so HO series cranksets will only shift to spec with HO LH levers and post 2015 FDs.
   
3. That's not to say non-optimal combinations "don't work" if the intermix is done - but it doesn't work "to spec" and as a result, intermixes void the functional as well as the materials / workmanship warranty.
   
   

If you follow the compatibility letter-codings laser-etched or moulded into the various transmission components, you can't go wrong ...

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