Shimano Ultegra Di²RD-RXOXX-XS Electric ShiftrearDerailleurbkShortCage

The Shimano Ultegra R8050 Rear Derailleur is engineered for riders who demand precision and reliability on every ride, whether conquering mountain passes or commuting through urban landscapes. Designed with endurance-focused cyclists in mind, this 11-speed component delivers silky-smooth gear transitions and unwavering stability even during prolonged efforts on technical terrain or long-distance adventures. Its advanced design ensures seamless integration with Shimano Road Di2 electronic shifters, offering instant response times and effortless control at the touch of a button—perfect for competitive racers and weekend warriors alike seeking cutting-edge drivetrain performance.

Key Features & Benefits:
– Direct Mount Compatibility: Built for modern frames with Shimano Rear Direct Mount (10×1 standard) standards, this derailleur provides rock-solid attachment points that minimize movement under high-tension loads during aggressive riding conditions.
– Versatile Cassette Range: Supports cassettes from 11-25T up to 11-30T, giving you the gearing needed to tackle steep climbs or maintain momentum on fast descents—ideal for all-road bikes or trail-friendly setups where flexibility matters most.
– Short Cage Precision: Optimized for close-ratio cassettes (up to 28T largest cog), this compact design enhances shifting accuracy on smooth surfaces while maintaining responsiveness across varying gradients.
– Lightweight Durability: At just 242 grams, it balances strength with agility—critical for reducing rotational weight without compromising on ruggedness during high-mileage use or rough descents.

Why Choose Ultegra R8050?
Compared to traditional mechanical derailleurs or rival electronic systems like SRAM eTap AXS, this model excels in quiet operation and consistent chain management thanks to its Shadow RD+ technology. Its 35-tooth chain wrap capacity outperforms many mid-tier components (e.g., SRAM Rival AXS at 33 teeth), ensuring smoother shifts when paired with wider-range cassettes commonly used by gravel riders or touring enthusiasts. Unlike heavier competitors (e.g., Campagnolo Chorus at 265g), Ultegra’s lightweight frame doesn’t sacrifice durability—tested to withstand daily abuse from serious cyclists who prioritize both performance and longevity.

Ideal for road cyclists navigating mixed terrain or those upgrading from older Shimano systems (e.g., R7000 series), this derailleur combines modern aesthetics (available in sleek black) with advanced engineering to enhance your ride quality from start to finish. Whether you’re chasing KOMs on rugged trails or maintaining cadence on flat commutes, its stress-free operation ensures you stay focused on the journey rather than your gears—a must-have upgrade for anyone seeking precision without compromise.

This derailleur’s blend of innovation and practicality makes it a standout choice for riders prioritizing smooth electronic shifting paired with rugged build quality—whether you’re preparing for gran fondos or exploring gravel routes where gear range versatility is essential.