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We share our derailleur hanger specs with Wheels Manufacturing, LLC. We spoke with our engineers and they indicated that the derailleur hanger for the Co-op Cycles DRT 2.2 is the same as the DRT 2.1, 3.1, and 3.2. As such, the Wheels Manufacturing Dropout-328 should be what you need. We recommend taking a look at the derailleur hanger on your bike and comparing it to the photo on the website before purchasing.
Hopefully this helps, thanks!
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