Cheap sram axs 12s flat top compatible cassette for trainer?

Equipment
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Does anyone know a cheap sram axs 12s flat top compatible cassette for trainer?

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Rival?

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If you’re stuck on a HG freehub, I’ve been using the ZTTO 12 speed cassettes and they work great.

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Just looked at ZTTO 12 speed cassette and it only appears to be compatible with a normal chain.

Is there a specific ZTTO HG freehub cassette that is compatible with SRAM flattop road chain?

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Rival cassettes are only around 25 euros cheaper than force cassettes and very hard to get

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there was another thread on the forum that talked about it (can’t remember which one) where someone suggested just keeping the shimano 11sp one if you’re just using ERG mode.

i tested this and realized that i preferred it as it was quieter and as i wasn’t shifting the cassette, it didn’t really matter regarding what cassette was on the back (and allowed me to save getting a new freehub)

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That’s not true though. SRAM made the flattop chain with oversized rollers. These will not properly seat into the teeth of an 11 or even 12 speed MTB cassette, because they are designed around the same chain roller size as all other drivetrains for decades.

The new flattop chain and cassette are different by design and should not be mixed with other drivetrain components. It may work in the sense it doesn’t explode, but it’s not proper use of the parts.

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How have these been working for you long term? I’m looking to get one as a trainer cassette. It wouldn’t be for zwift racing or anything so shift quality doesn’t really matter.

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Actually changed trainers about 8 months ago, downsized so I’m on a feedback sports omnium, but I had the ZTTO one has a trainer one for 6 months and didn’t notice any issues. Had some issues with getting into the smallest gear but that could’ve been indexing related.

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Nice, I’ll probably go that route cause I can get an 11-28 and it’s like $30 instead of $65+.

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I’ve used Tifosi HG 12-Speed with a flat top chain with no issues.

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Seems there’s multiple threads on this topic, so just continuing one of these.

I’m in a bit of a mess with my bike compatibilities, so trying to untangle them a bit. I ride in ERG or resistance mode on the trainer (no racing), so don’t have the need to shift at all.

I have 11s Shimano, 12s SRAM Eagle and 12s SRAM flat-top - trainer has a non-XDR freehub/driver that I’ve been using with either an 11s Shimano casette or SRAM NX Eagle 11-50.

I know flat-top isn’t compatible, but is there a casette set-up that would not have me change casettes (much less drivers) every time I change bikes? :smiley:
Flat-top chain on 11s Shimano casette? Some other non-XDR SRAM casette that also would take 11s Shimano?