Snapped X01 cassette tooth

I have a snapped tooth on the 50T ring of my X01 cassette and I’ve been informed by sram that I’m welcome to send it for warranty inspection but they’re likely to call it wear and tear (after 12 months use) and also they don’t have any stock to replace it with anyway.

I can find stock in Europe to replace it with either GX (XG-1275 10-52) or an XX1 (XG-1295 10-50). The XX1 is 100EUR more expensive. I’ve read advice that the X01/XX1 is worth the extra based on longevity but then again the whole reason I’m in this mess is because my X01 has snapped a tooth. Did I just get unlucky or should I go for the GX so I don’t mind so much next time it happens?

Relatedly, my chain is just about at 0.5% wear. If I’m buying a new cassette should I also replace the chain?

Or should I just file down the edges of the snapped tooth, get over the occasional chain skipping and keep riding it?

How many miles are on that cassette?

Might have been a clunky shift that did it?

I believe the best combo is actually the XX1 chain and GX cassette, the nitride coating means the chain lasts longer.

Keep riding it. There’s so much chain wrap on the 50t ring that you probably won’t notice it.

How many miles are on that cassette?

Might have been a clunky shift that did it?

About 800 miles. Could well have been a bad shift that did it.

I believe the best combo is actually the XX1 chain and GX cassette, the nitride coating means the chain lasts longer.

Are you saying that’ll help a GX cassette last longer too? Or just the chain?

Keep riding it. There’s so much chain wrap on the 50t ring that you probably won’t notice it.

I suppose the first answer it to try it out and see how it goes. I think the idea that stock is hard to find but I’ve got the parts in a basket ready to go is making me antsy 😀

Ive been impressed with the GX longevity myself.

If I was you, I would just order GX spares, have it ready for if/when you need it.
but I would keep riding that until/unless it was a problem

I’d fit a GX personally and send the broken cassette away in the hope you *might* get it replaced under warranty when there is stock.

I ran a GX cassette with a broken tooth on the 50T ring for 2.5 years with no obvious deleterious effects until the rest of the cassette was done.

Well the GX I thought I had found in stock seems to have been sold so my options now look like ride it or spend ~300 EUR on an XX1.

I reckon I’ll ride it and keep my eyes open for a GX to buy at some point and consider the XX1 if riding it doesn’t work out for some reason.

Are you saying that’ll help a GX cassette last longer too? Or just the chain?

Apparently so, yes. Obviously the chain should last longer too but also the cassette.

Mainly down to the xx1/x01 chains lasting a lot longer, cassettes will wear quicker with a worn chain.

Plenty life left in those teeth so it shouldn’t be classed as wear n tear just yet, it shouldn’t have snapped off, simple as that.
You could get a gx, send yours off for inspection, they could send a new one when available, worth a go I suppose.
If you just smooth it off keep riding then sram have got away with supplying a possibly faulty part, weigh up what’s the worst case versus a possible shiny new cassette sent out in a few months.

You could get a gx, send yours off for inspection, they could send a new one when available, worth a go I suppose.
If you just smooth it off keep riding then sram have got away with supplying a possibly faulty part, weigh up what’s the worst case versus a possible shiny new cassette sent out in a few months.

I reckon that would be the best bet except I now can’t find a GX cassette to buy from anywhere. If anyone has a source I’d love to hear it!

Had a GX that lost 2 teeth on the 50 within the first month of use, worked fine, whole bike was sent back though so never got round to warranty or the likes.

As others say, it’s the 50t, so least amount of resistance in use, and the most chain/cassette interaction, so shouldn’t cause too much of an issue hypothetically.

Ride it and feel smug that your cassette is now even lighter than it was.

<span style=”font-size: 0.8rem;”>Given it’s the biggest cog with the most teeth and likely to be more of a spinning gear than a putting the power downgear, I wouldn’t worry</span>