Shimano REAR DERAILLEUR, RD-RX805, DI2 ULTEGRA RX, GS 11-SPEEDThe Ultegra RX Rear Derailleur brings Shimanos chain stabilizing technology road cycling drivetrains, delivering smooth and precise shifting over technical terrain. It expands road bike capabilities, inspiring confidence on any surface and drives the evolution of road cycling to include greater elements of adventure. The Ultegra RX Rear Derailleur is available in 11 speed Mechanical or Di2 compatible options. Shimano Shadow RD+ chain stabilizer

Size (wheels) - 700c

The pulley wheels on the 12-tooth derailleur cage allow the chain to move more smoothly

The contact area is wide for optimal comfort

Taste your beverage and nothing else

ONLY 14 grams (less than one half ounce) packages the fastest tool to plug pesky punctures that evade sealant

yet maintains strength to provide better power transfer and quicker

Key Feature 3 Syncros Capital 1

The stem length starts from 80mm up to 140mm

Soft TPE ends provide extra support when railing turns and help to protect your grips from impacts while the V2

the spacers ensure secure assembly and maintain the integrity of the steering system

more secure shifting

easy setup and reliability