Photo: Outside Up North Blog
Tamia has a well documented guide to removing/installing bar end shifters on her blog. If you are not clear on how to do this and want to tackle a relatively painless bike mechanic project bookmark her post. If you are not familiar with bar end shifters you might want to check out her post just to see how they work. I really like bar ends and they are pretty much my go to shifter for any application that they work for. Generally this doesn't include interhal gear hubs, but Hiawatha Cyclerly has come up with a cool solution that works [see post above].