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Cycling navigate_next Components navigate_next Rear derailleurs navigate_next MTB 10-11-12 speed navigate_next Shimano GRX RD-RX827-SGS Di2 derailleur, 12-speed
Shimano

Shimano GRX RD-RX827-SGS Di2 derailleur, 12-speed

449 €
RRP 489 €
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From 29.10.2026 (Thursday) Check availability
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Delivery method on Friday 30.10.2026
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Delivery method on Friday 30.10.2026
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Shimano GRX RD-RX827-SGS Di2 Rear Derailleur

The Shimano GRX RD-RX827 rear derailleur, with its exceptionally durable and intelligent design, is specifically developed for gravel bikes with a 1x12 drivetrain. Featuring Shadow RD+ technology, it offers quiet and precise shifting even in demanding conditions, while automatic recovery after impact increases its lifespan. The super long cage allows for the use of a wide cassette range up to 51 teeth, ensuring you can tackle any gravel adventure with confidence and control.
Product features
Di2 electronic shifting for maximum precision
Shadow RD+ technology reduces noise and the risk of chain drop
Automatic recovery after impact for longer life
Solid pulleys for reliable shifting even in demanding terrain
Product details
Groupset Shimano GRX Di2
Gears 1x12
Control type electronic
Capacity 41T
Min./Max. smallest sprocket size of cassette 10T/10T
Min./Max. cassette sprocket size 51T/51T
Weight 445 g
product ID 353338
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Product questions
majky1184 majky1184 • 15 october 2026 at 8:58
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Variant Shimano GRX RD-RX827-SGS Di2 prehadzovačka, 12-kolo

SK Dobrý deň chcem sa spýtať či môžem dať aj kazetu 10-45

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15 october 2026 at 8:58
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gronkjear gronkjear Customer support • 15 october 2026 at 15:45 •replymajky1184
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SK Dobry den, teoreticky je to mozne - avsak Shimano to oficialne neodporuca, ramienko ma iny tvar, vrchna kladka specificke odsadenie - radenie na lahsie pastroky moze byt problematickejsie.
Skor je potom lepsou volbou pouzit GS Di2 prehadzovace - XT alebo XTR, ktore su specificky urcene prave pre max. 45T pastorok.

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15 october 2026 at 15:45
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WARNING
For information on installing, adjusting, and replacing products that are not found in the user's manual, consult the place of purchase or a distributor. A dealer's manual for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to read this "user's manual" thoroughly before use, follow it for correct use, and save it so that you can refer to it at any time.
The following instructions should always be followed in order to avoid personal injury and physical damage to equipment and the environment. The instructions are classified according to the degree of danger or damage that may occur if the product is used incorrectly.
DANGER - Failure to follow the instructions will result in death or serious injury.
WARNING - Failure to follow the instructions could result in death or serious injury.
CAUTION - Failure to follow the instructions could result in personal injury or physical damage to equipment and the environment.

WARNING
- Do not disassemble or modify the product. This may cause the product to malfunction, you may fall unexpectedly and be seriously injured.
- Never use alkali or acid-based solvents such as rust removers. If a solvent is used, the chain may break and cause serious injury.
- Clean the chain regularly with a suitable chain cleaner. Maintenance intervals depend on the circumstances of use and riding.
- Check that the chain is not damaged (deformed or cracked), does not skip or show any other anomalies, such as arbitrary shifting. If any problems occur, contact the place of purchase or a distributor. The chain may break and you may fall.

Shimano
MTB 10-11-12 speed Shimano
Japanese manufacturer produces road, mountain, gravel, trekking, BMX and e-bike groupsets. They also offer a whole series of components and apparel. Their range goes from wheels, footwear, eyewear to backpacks. Shimano is a traditional manufacturer known for their quality work, which is why they are the favourite choice of amateurs and professionals.
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4,84/5 Second most popular brand
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