Or can I go with a SRAM or KMC.

From reading as much as I can find on the net sounds like shimano will have you believe the tolerances in 11 speed mean you can only use a shimano 11 speed chain.

Anyone shed any light on this?

Any manufacturer will always argue you need to use their full setup for complete compatibility. I ran a KMC on my X1 setup, I now run a KMC on my XT 11 speed setup, works great on both.

And I am using the sram xx1 chain.

I hope KMC is fine as I’ve got one to run xt 11seped on. I’m pretty sure the bundle form 18 bikes was including a kmc chain.

Sram here, replacing an ultegra. No probs at all.

kmc on xt. seems fine.

KMC here too and it’s working beautifully.

SRAM X1 chain for me here too!

I’m running this shimano 11 speed chain with my xt set up. £18.95 and works fine.

http://www.ribblecycles.co.uk/sp/road-track-bike/Shimano-11-Spd-HG700-6800-Ultegra-Chain/SHIMCHAI958000000000?utm_campaign=Googlebase&utm_medium=organic&utm_source=Googlebase&geoip=UK&gclid=CKrl9YP43McCFcoBwwodOYAJdQ

SRAM on our Chameleon, running great.

Running Shimano chain on 11 speed here, not used Shimano chain for years been mainly SRAM will see how it goes, is working nicely with a renthal chain ring.

Was a spur of the moment decision to go 1×11 have to say pretty pleased so far.

18Bikes included a SRAM chain in their 11 speed set, so I’m hoping when I get it on the bike it will work!

Ours was done at 18 Bikes, works a treat

Running the Ultegra chain on the OH’s XT setup. The KMC one just wouldn’t work right and dragged on the cogs either side of the one you were on.
The Ultegra is silent.
On a different note – we discovered the reason for the chain dropping down a cog when pedalling backwards – there is on tooth that has a completely different ramp cut on it to the others and its this tooth that drops the chain off it onto the cog below. Even went as far as to mark it with a paint pen and it was that one every single time.

Yep, we’ve (18 Bikes) been fitting/including Sram chains with much success. I have a Shimano to try out, but out of curiosity more than anything. We’ve always preferred Sram chains, if only for Powerlink/Powerlock.

Stuck one of the Decathlon 11 speed power links it the Shimano chain 😉

Ran an Ultegra chain and just didn’t work right. Running a boggo 1130 SRAM one now and seems much much better