@RunningRugger Thanks for reaching out!

We are working on tracking down the information you are looking for, however, you may be able to measure the stem length yourself. If you take a look at the photo below, it will show you where you need to measure your stem in order to get the correct length. Typically, the measurement is in increments of 10mm, the stem in the photo is 60mm. 

I recently purchased a new Co-op Cycles DRT 4.1 fat tire bike in the same size as I normally ride in their bikes (medium), it felt a bit small for me as well with the 60mm stem, so I swapped it out for an 80mm stem I had on a different bike and it has made all the difference! 

The handlebars you have are 31.8mm, which may be a measurement you'll want to have on hand when purchasing a new stem, in addition to noting the 'rise' of the stem. For a mountain bike like the Co-op Cycles DRT line, the rise is likely pretty low (around 3°). As you look at other stems you may see a higher rise, which will lift your handlebars up slightly. Your local REI bike shop should have a variety of stems on hand if you can stop by. We also carry the Bontrager Elite Bendr Stem 17 degree that comes in 70, 90, and 105mm lengths.

Hopefully this helps, thanks!

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