the pro race use is sticking them in the front of aero bars , these days.. in the Tri' bikes & time trials..
the touring rabble puts them in the back of Drop Bars.
left one to the front D is friction . (MINE, both are)
GP put bar end shifters in the BS MB1 specs for a while..
Last edited by fietsbob; 09-23-14 at 03:24 PM.