Shimano 105 RD-5800-SS Rear Derailleur
The Shimano 105 RD-5800-SS is a rear derailleur for an 11-speed road drivetrain, featuring a short cage (SS) design. This component is designed for use with a 23T–28T largest sprocket, a 33T total capacity, and a 16T maximum front chainring difference, making it suitable for road bike setups with a close-ratio and precise gear configuration. Shimano also lists compatibility with HG-EV 11-speed / HG-X11 chains.
As part of the Shimano 105 series, the RD-5800-SS is suitable for users looking for a road rear derailleur with official Shimano specifications for component replacement or compatible drivetrain assembly. It is available in Black / Silver and weighs approximately 234 grams.