deore

Deore is a family of bicycle components produced by Shimano, primarily used on mountain bikes. It represents Shimano's mid-range groupset line, positioned between entry-level and higher-end options.

The Deore line covers drivetrain components such as front and rear derailleurs, shift/brake levers, chain, cassette, and cranksets, as well as braking systems (mechanical or hydraulic disc brakes) and bottom brackets. The exact composition varies by generation.

Over multiple generations since its introduction in the 1980s, Deore has evolved to support modern wide-range cassettes, multiple speeds (typically from 9 to 12 speeds), and both 1x and 2x configurations. The line has incorporated hydraulic disc brakes in many models, improving stopping power and modulation for trail riding.

In Shimano's product hierarchy, Deore sits above entry-level groupsets and below higher-end lines such as SLX and XT. It is widely used by recreational riders, commuters, and cross-country mountain bikers who seek reliable performance at a lower price point.