The Shimano 105 RD-5700-SS is a short-cage rear derailleur engineered for road bikes using compact chainrings (50/34T) or standard rings paired with moderate cassette ranges. The “SS” suffix denotes short-cage geometry with a maximum chain capacity of 33 teeth, making it suited for road racing, club racing, and general road cycling rather than touring or mountain applications. It accommodates cassettes with sprockets up to 28 teeth on the largest cog and as small as 11 teeth, with a maximum front chainring difference of 16 teeth. The derailleur integrates Shimano’s wide-link chain design technology, improving shifting reliability and chain compatibility with 10-speed drivetrains. Installation uses a standard derailleur hanger mount. The short cage design keeps weight minimal and maintains tight chain tension for crisp shifting on road setups. This model represents an upgrade from the 5600 series, with improved capacity allowing 11-28 cassette compatibility on compact cranks—a meaningful increase that provides more climbing gearing without requiring frame modifications or extreme chain length adjustments.