Does anyone, or has anyone, used one? If so any good?

From what i have read on the world wide web, some people have succesfully run XX1 with standard "teethed" chainrings. With a clutched RD of course. But you might want to add some sort of chainkeeper.

I have also gotten confirmation from a Sram Rep. that the XX1 and normal 10 speed chains have the same internal measurements. So that shouldn't be a problem.

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"Stay cool and try to survive" A. Klier to the other members of the Garmin classics squad the night before P-R.

I would be interested in getting a XX1 chainring from them as well but I don't think Fibrelyte make any XX1 chainrings because of the threaded inserts. I asked them last year or so if they could make XX chainrings but they said no due to the problem caused by the inserts.

I bet they could make chainrings with splines, to fit XX1, S-Works/Lightning and Hollowgram. Carbon Ti have just released titanium Narrow-Wide chainrings like that.

It would be a very cool and sexy addition to a WW MTB build.

I have contacted them about non-XX1 chainrings.

It is no problem to manufacture one, but the durability will suffer in MTB conditions ie. mud/sand.

I am tempted anyway, we'll see.

Chris.

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MSC Koncept Carbon Di2 - 6955g
Leichtkraft Team Carbon - 6868g.

True it will wear a lot faster in mud/sand conditions. However, if you keep it clean it will last a while. I've been using them on my MTB for a few years now and i replace them after 2-3 seasons. I always keep them clean (quick rinse after a ride). Their pulleys seem to last a lot longer and i only clean them once or twice during the season. Had to replace them only once.

These are mine after 3 seasons:

2-3 seasons is not bad at all - I might give them a try then.

How is the shifting? Have you ever chipped/broken a tooth in these chainrings?

BTW. Post your MTB in the gallery as well.

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MSC Koncept Carbon Di2 - 6955g
Leichtkraft Team Carbon - 6868g.

The shifting is excellent! I never had any issue with them. I have slightly chipped a tooth a while ago but it didn't affect the shifting performance at all.

When i replaced my chainrings at the beginning of the season i noticed that my old chainrings had two missing pins on the back (they are glued to the chainring). Probably just normal wear

The rings itself will hold up fine, the only question is the durability of splines, they have to bear with a lot more force and the carbon fiber is not good under compression between layers.

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Experimental Prototype