Specshift is an independent bicycle component information platform built to make technical specifications easier to understand and compare. Its structured database brings together component specs and compatibility data, helping cyclists and mechanics research upgrades, plan repairs, and check whether parts may work together. The site covers components such as rear and front derailleurs, cranksets, and cassettes, as well as groupsets. Rather than presenting information as a sales pitch, Specshift focuses on raw technical facts and practical comparison tools.

For drivetrain planning, its gear ratio calculator turns chainring and sprocket tooth counts into riding measures, including ratios, gear inches, rollout, and speed at cadence. It supports road, gravel, mountain, and fixed-gear use, with examples such as compact road, gravel 1x, trail 1x, and an urban 47×17 fixie setup.

Specshift describes itself as a tool for cyclists and mechanics and is operated by Specshift AS, based in Norway. It is not affiliated with bicycle manufacturers, and its compatibility information is guidance rather than a guarantee; specifications may contain errors.