Shimano Ultegra RX RD-RX800-GS Shadow RD+ Rear Derailleur 2x11-speed - medium

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Description of Shimano Ultegra RX RD-RX800-GS Shadow RD+ Rear Derailleur 2x11-speed - medium


Ultegra RX - Brings adventure back to road riding

With the diversification of road cycling and the growth of gravel and multi-surface riding, Shimano introduces Ultegra RX, rear derailleurs with chain stabilizing technology that further the versatility of the Ultegra R8000 drivetrain. The RD-RX800 rear derailleur, for mechanical and electronic Di2 systems respectively, utilizes Shimano’s proven Shadow RD+ derailleur technology that has been adapted and tuned for road drivetrains and riding conditions.

Riders continue pushing road bike capabilities, evolving the sport from racing to encompass greater elements of adventure and including a broader range of riding styles. In a natural evolution, RX800 expands the potential of Ultegra R8000, combining chain stabilizing features with the same performance characteristics of Shimano’s most versatile performance road drivetrain.


The Shimano RD-RX800 rear derailleur features Shimano Shadow RD+ technology and precise accurate shifting, but with the added chain stabilizing switch to control the drivetrain over rough or uneven ground. Much like Shimano’s mountain bike derailleurs, the On/Off switch can be found next to the upper pulley. When activated the rear derailleur pivot takes a firm hold to reduce excessive movement, noise and general "chain chatter".

The RX800 rear derailleur is compatible with mechanical road dual control levers and will accommodate an 11-28T cassette up to Shimano’s wide-range 11-34T cassette.
Material: aluminium
Weight supplement: manufacturer's specification
  • Description
  • Fact Sheet
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Fact Sheet of Shimano Ultegra RX RD-RX800-GS Shadow RD+ Rear Derailleur 2x11-speed - medium

Product Name: Shimano Ultegra RX RD-RX800-GS Shadow RD+ Rear Derailleur 2x11-speed - medium
Manufacturer: Shimano Parts
Item Code: SHI370952
activity: Bike
usage bikesport: Road Bike
shifting system: 11-speed
shifting actuation: Mechanical
smallest sprocket: 11
rear derailleur cage: medium
rear derailleur max. teeth: 34
rear derailleur capacity: 39
max. chainring spread teeth: 16
Color: Black, Grey
weight: 248g
manufacturer item code: IRDRX800GS
Manufacturer page: http://www.shimano-europe.com/
  • Description
  • Fact Sheet
  • Ratings (2)

Average:

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Customer Reviews
Excellent
The derailleur fits Tiagra 2x10 well (only a chain had to be shortened a bit). A chain stopped knocking to the frame on a bumpy road.
Very smooth
Works very smoothly with XTR 11-40 cassette. Clutch mechanism keeps chain tight, no bumping, at "on" position shifting is effortless.
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