Shimano Ultegra RD-R8000-GS Rear Derailleur - 11 Speed, Medium Cage

The Shimano Ultegra R8000 GS rear derailleur is a workhorse 11-speed component built for smooth, reliable shifting across a wide gear range. The GS (long cage) version is designed to accommodate cassettes up to 34T, making it ideal for riders tackling hilly routes or loaded endurance rides. It features Shimano’s Shadow RD design, which keeps the derailleur tucked in for improved chain stability and reduced risk of damage. With crisp indexing and a clean, low-profile look, the R8000 GS strikes a strong balance between performance, durability, and value — especially for all-day road and mixed-surface riding.