I’m gathering parts to build up a stumpjumper carbon frame (not Evo) I bought last year and I’m a bit confused when it comes to the headset.
As far as I can tell it uses an IS42/IS52 headset but worried it might be slightly different or need something else. I found an article the other day (can’t find it now) that said I would need a few spacers, but maybe that was for a certain manufacturers headset.
I did find this Chris King headset (https://avt.bike/products/chris-king-dropset-5-42mm-52mm-45-45-degree-integrated-headset-for-specialized-only) that I think should work, assuming my frame has a different headset than the Evo.
I also found this wolf tooth headset (https://www.wolftoothcomponents.com/products/wolf-tooth-premium-is-headsets-for-specialized-integrated-standard?variant=39263870877731). Not sure if the 2021 carbon stumpjumper is a separate product though since it lists 2019 Stumpjumper Carbon.
by woodc85
1 Comment
Take it apart, measure the bearings and consult an SHIS chart to confirm which standard your bike uses. It will take about as much time as making this post.