Looking to mount an SLX M7000 shifter which comes with an ispec ii mount onto some SLX M675 ipsec b brake levers.  I don’t have the new shifter to hand yet to check… it’s conceptual at this stage.

Does anyone know whether the ispec b mount off an XT 10 speed M780 shifter be mounted on an M7000 SLX shifter?

I don’t think you can do it without a third party adapter like this –

https://problemsolversbike.com/products/shifters-derailleurs/rematch_adapters

Just checked and wow there expensive, might not be worth it. Hopefully someone else has a better idea.

Why don’t you just by an I-spec B M7000 shifter? Shimano do SLX and XT in I-spec B I-spec II and band on options.

Sell your B shifter and buy a new ii shifter. I had the same issue last week and that was the cheapest solution I found.