Shimano GRX Di2 RD-RX815-GS / RD-RX817-GS Shadow RD+ Rear Derailleur 11-speed - medium

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Description of Shimano GRX Di2 RD-RX815-GS / RD-RX817-GS Shadow RD+ Rear Derailleur 11-speed - medium


Shimano GRX - Explore beyond

Instead of telling gravel riders what they needed, Shimano asked them what they wanted for their offroad adventures. The result are the Shimano GRX components which represent the first series especially developed for riding on rough roads and through gravel. The Shimano GRX sets itself apart from the rest of the component world with its gravel specific ergonomics, optimized gearing options, rugged reliability as well as a quiet and stable drivetrain.


Shimano GRX RD-RX815-GS / RD-RX817-GS Shadow RD+ rear derailleur

The electronic Shimano GRX Di2 rear derailleurs, RD-RX815 and RD-RX817, are characterized by quiet, smooth, precise and reliable shifting even in the most demanding terrain. This is mainly due to the Shadow RD+ chain stabilisation system which prevents the chain from slapping and dropping as well as from unnecessary movements of the derailleur's cage, thus ensuring uninterrupted shifting performance. That is why an On/Off switch can be found next to the upper pulley, much like Shimano’s mountain bike derailleurs. When activated the rear derailleur pivot takes a firm hold to reduce excessive movement, noise and general "chain chatter".

The RD-RX815 rear derailleur will accommodate cassettes with 11-30 teeth up to cassettes with 11-34 teeth. Instead the RD-RX817 rear derailleur is suitable for 11-40 and 11-42 teeth cassettes. At the RD-RX815 model pulleys with 13 teeth and at RD-RX817 jockey wheels with 11 teeth ensure a reduced noise level and increased riding comfort.


Note: In order to ensure proper functioning of the electronic Di2 drive system, all components need the same firmware version. The optional diagnostic device allows for reading out or updating the firmware version. An operation of components with different firmware versions may cause a malfunction or loss of function.
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Fact Sheet of Shimano GRX Di2 RD-RX815-GS / RD-RX817-GS Shadow RD+ Rear Derailleur 11-speed - medium

Product Name: Shimano GRX Di2 RD-RX815-GS / RD-RX817-GS Shadow RD+ Rear Derailleur 11-speed - medium
Manufacturer: Shimano Parts
Item Code: SHI422634
Manufacturer item code: IRDRX815 (RD-RX815-GS)
IRDRX817 (RD-RX817-GS)
Material: aluminium (painted), glass fiber reinforced polymer (GFRP)
Weight: approx. 287 gram (RD-RX815-GS)
approx. 318 gram (RD-RX817-GS)
(manufacturer's specs)
Cage length: medium
Largest sprocket: 34
Overall capacity: 38
Smallest sprocket: 11
Highest difference of chain wheel: 17
Manufacturer page: http://www.shimano-europe.com/
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Selection: Shimano GRX Di2 RD-RX815-GS / RD-RX817-GS Shadow RD+ Rear Derailleur 11-speed - medium
Still 10+ in stock in stock, delivery time 11-12 days Model | Largest Sprocket RD-RX815-GS | max. 34 teeth
Still 1 in stock in stock, delivery time 11-12 days Model | Largest Sprocket RD-RX817-GS | max. 42 teeth
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