Originally Posted by
Lightfoot21
What about removing material from the bar end shifters to make them fit the inside of a mountain bar grip? It would seem more difficult, but maybe safer in the long run. I have not looked at mine for a while, but I seem to remember that there could be some material removed and they would still work.
I've done this to fit bar-end shifters in thick-wall recumbent handlebars. I removed one wedge, thinned the other two, and turned down the diameter of the screw to fit inside. It worked, but it wasn't particularly pretty.
Steel bar ends are generally found on the cheapest bikes. Here's some:
http://www.ebay.com/itm/Shorty-No-Be...-/260558447304
They're a lot easier to modify than making the bar-ends shifters fit in a thick aluminum extension.