I had trouble pushing out the link on a new Ultegra 11-speed chain, using this small Park Tool chain tool, CT-5. It needed quite a bit more leverage than my older 10-speed chains. I used an adjustable wrench to hold the loop on the tool. The CT-5 worked fine on my previous 10-speed chains.

The pins on 10 and 11-speed chains have a mushroomed rivet-style cap on the pins. It breaks off as you push the pin out. So don't re-use a pin, it'll be weak, maybe just good enough to get home if the chain breaks on a ride.




I think you'd have a hard time using even a quality name brand multitool version. Not enough leverage.
Expect that your $4 multitool chain tool will break, and you'll still need a "real" chain tool. That $4 tool uses the multitool body for leverage--good. But it all depends on how strong the breaker body is.


Sram quick link
I like the Sram Powerlinks for 11-speed chains. Easy to install, and fool proof. See my post in another thread for more info on installing and removing these.