Tommy, You can always call Rivendell with those questions (and get your bb from them as well). I don’t have a Ram, but my QB uses a 107, my Hunqapillar a 110-113 (most use a 113, but I’m not using the inner ring, so 110 works great). So the 107-110 I mentioned is based on that, and presuming the Ram’s chain stays aren’t wider than the Hunqapillars (which takes wider tires than the Ram).
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