Shimano's I-Spec is single-clamp bar adaptor that allows the shifter or dropper post lever to fix directly to the brake lever, resulting in a lighter and more minimalist cockpit. At one point, your ...

This is not the case with Shimano's new Q'Auto system, however, as it draws on the rider's own pedaling power. Designed mainly for urban, trekking and gravel bikes – both regular and electric – Q'Auto ...