As above really, bought a Deore 10 speed triple groupset from Ribble, looks like i inadvertently selected the double front mech when i needed the triple.

I found an xt triple front mech in the spares box but its from a 9 speed groupset. Any reason that it wouldnt work with the new 10 speed setup?

Thanks!

Should work ok. I’d certainly give it a try before buying a new mech.

Front rings of 9 and 10 speed are the same and in the same position on the spider. ONly diff is that 10 speed chain is a fraction narrower than 9 speed to fit the slightly tighter set up on the rear cassette. Your mech should work fine.

Never had any problems myself

doing it now, works fine

Did it last year, 9 speed Chainrings are fractionaly wider and a little noisier than a 10 until they “Wear” in