Shimano rear derailleur ULTEGRA RD-R8000 11-speed short

Shimano rear derailleur ULTEGRA RD-R8000 11-speed short

Technology:Top Normal derailleurs are traditionally spring-loaded derailleurs. Users of RAPIDFIRE PUS levers tend to prefer the longer response time of Top Normal derailleurs as they shift down more gears faster.
Drivers for whom responsiveness is a top priority will also appreciate the ability to downshift using the thumb.
Fast shifting: Downshifting with your thumb. The shifting process can be completed quickly.

Shadow RD: With its sophisticated technology, the SHIMANO SHADOW rear derailleur is particularly suitable for a more aggressive riding style. The extremely minimized profile brings with it a number of advances.
Due to its flat design and the construction based on single preload, the rear derailleur does not hit the chainstay even under the roughest conditions. The gearshift works cleanly and quietly.