[Achtervolger]

Does anyone know if you could use 105/ultegra hydraulic 11 spd STIs with Tiagra (RS405) hydraulic calipers? Or are they not compatible for any reason? Cheers!

 

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[mark1a]

That would make complete

That would make complete sense if they are the 4700 series BR-4770 calipers, it’s the previous gen BR-RS405 that aren’t according to the chart, which I think the OP was asking about. 

[RunFBRun]

Hi, I have 105 shifters and
Hi, I have 105 shifters and Tiagra (rear) calipers on my bike.
Fitted by LBS about 18 months ago (remember the pandemic parts shortages?) and it works just fine 🙂
I’ve just checked my bike to make sure I wasn’t imagining it.
Hope this helps.

[mark1a]

It doesn’t appear that they

It doesn’t appear that they’re officially compatible according to the chart.

 

[Achtervolger]

Thanks for your reply and the

Thanks for your reply and the chart, really helpful.

 

[Author]

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