The marginal "GMC" 'Denali' used a grip shifter pair right near the stem... bars come apart in the Center, I Guess,

High end there are some from German Bike Builders that let a R'off grip shifter sit on the bar near the stem. similar, a drop bar that is split and 7/8 to fit the shifter.


HubBub designed an extension to go in the end of drop bars. like a bar end shifter , same expanding clamp hardware.. added on tube is 7/8"

Another option from UK SJS Cycles is a T mount like a threadless stem, the T is 7/8" tubing. it takes 27mm of steerer spacers. under your stem.

& Consider Gevenalle - retroshift.. Brake levers , with a front mounted shift lever, Indexed or Friction ; V or Cantilever Brake Models.



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