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Ergo, Ergopower ®
From WikiPedalia
A combined brake/shift lever for drop handlebars, made by Campagnolo. Similar to S.T.I., Ergo uses an auxiliary lever inside the brake lever to select larger sprockets, and a thumb button on the inboard side of the lever to select smaller sprockets. This has the advantage, compared with S.T.I., of using a different motion for upshifting and downshifting, reducing the risk of accidentally shifting the wrong way.
