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I've got a prebuilt MTB that came with an SRAM NX drivetrain and Guide T brakes and I'm looking at upgrading the drivetrain to higher end parts. I'm thinking about taking the upgrade opportunity to switch to the Matchmaker X system, the new shifter will definitely be compatible and I can get hold of a clamp like this without an issue: SRAM Matchmaker clip

I understand that the new shifter will be attached to the screw thread facing downwards. The SRAM website claims my Guide T brakes are Matchmaker compatible too (https://www.sram.com/en/sram/models/db-gde-t-a1) but it doesn't look like it from their picture as its a two bolt clip similar to this image. My brake body has half the clamp molded into it, then the second piece fits on the back.

Brake clip with two bolts

The Guide R below appears to be attached through Matchmaker, but the body is a completely different shape below. It appears to have a small wedge with a hole for the Matchmaker clip's bolt to fit through

Guide R

I'm either missing something silly, or are there are multiple versions of Guide T brakes with different body styles that SRAM doesn't make clear on their site?

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Further research shows there are two systems, Matchmaker and Matchmaker X. My Guide T brakes allow the use of Matchmaker and the new Eagle Shifters use Matchmaker X. It seems as though all of the other Guide brakes (including the R the bottom picture above) use Matchmaker X.

I either need to find a Matchmaker clamp adapter like this https://www.sram.com/en/sram/models/db-acc-mm-a1 (which I'm unable to find in Europe), or swap my brakes at the same time.

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    Great finding, thank you for coming back to share the answer. Yet another incompatible standard... its like manufacturers do this intentionally.
    – Criggie
    Feb 4 at 21:23
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    @Criggie yes, and even worse that models in the same range match different standards with similar names :( Feb 6 at 18:13

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