HEy guys, bit of a newb to MTB, a lot of road bike experience. One thing I'm weak on in both disciplines is headsets. While I"ve built a bunch of my own bikes up, headsets are something I usually take to the local shop since they have the proper tools to press in cups and install crown races. About to finish up my build of my canfield brothers yelli screamy and I'm building it with a straight 1 1/8" fork steerer so i had to get a conversion as it has a tapered headtube. I went with the Zero Stack cane creek 40 bottom cup as opposed to the external cup. Now looking through pics of everyone elses yelli's they all seem to have external cup headsets. What are the pros and cons to both? Seems that there must be some slight geometry change in the front end with a zero stack. I'm running a Manitou Tower pro 120mm fork. The yelli's claim to fame is it's slack headtube and very short chain stays so I'm thking the only thing I'm doing is slightly steepening the headtube angle? What are the reasons someone would take zero stack over external cup? is it purely aesthetic?
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