Sram Mechanical 2x12 Groupset

Hey everyone, I threw together this video where I use a Ratio Technology shifter internals to convert a Sram groupset to AXS 12 speed. I also test the wider 10-36 cassette in the repair stand. What do you think of this set up?


I just spent the evening looking into what I needed to run a 9-46, or 9-50t 11 speed on my gravel bike. This opens up a whole another option

Oh yeah, you should definitely check out Ratio Technology if you want to run 12 speed mullet set up. Great little company.

I like this idea, but I’m not anxious to run a 9 or 10t cog. 11t cogs aren’t even that great. 12-40t 12sp would be great. They need to call out 12th add-a-cog gear kits that work too.

At any rate, 12sp is just an expensive very small improvement over 11sp. The cassettes are expensive, new freehub (ex ZTTO and sunrace?), there’s no sense in running it unless you are long cage 1x and you’re adding a larger cog, and you need a new chainring for the 12sp chain. All this for a 10% increase in gearing. You’re way better off I’m going 2x11. This can only make sense if you’re sharing wheels.

Yes all very valid points and honestly I think Sram made a mistake going with the 10t on the road. It is a nice bailout if you are running 1x but for 2x I do not see the benefits.

I actually did a video on the same set up by with a Sensah 12 speed 11-34 cassette that installs on your normal 11 speed HG freehub. That cassette is $85. Here is that video

I’ve been using the mullet 1X12 setup on my gravel bike for a bit, and it’s really nice. It seemed to be a bit picky in getting things to index, but once I got that worked out it’s nice. Rotor has a bunch of options starting with 11 tooth, but you cannot call those cheap in any way.