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

Shimano

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

Name: Shimano GRX RD-RX827-SGS Di2 derailleur, 12-wheel
Price: 449.0 EUR
Availability: InStock

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449 €

RRP 489 €

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Delivery method on Wednesday 28.01.2026

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Delivery method on Wednesday 28.01.2026

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Product description

The Shimano GRX RD-RX827 electronic derailleur with an extremely durable and intelligent design is specially developed for gravel bikes with a 1x12 drivetrain. With Shadow RD+ technology, it offers quiet and precise shifting even in demanding conditions, while automatic recovery after impact increases its durability. The super long chainstay allows for a wide cassette range of up to 51 teeth, so you can tackle any gravel adventure with confidence and control.

Suitable for 1x12 drives with 10-51T cassette
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 difficult terrain
Low weight thanks to a combination of aluminum and steel
Direct mounting for easy installation
Weight: 445 g

Product details

Groupset	Shimano GRX
Gears	2x12, 1x12
Control type	electronic
product ID	353338
EAN

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Warnings and instructions

WARNING
For installation, adjustment and replacement information about products not found in the user's manual, consult the place of purchase or a distributor. A dealer's manual intended 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 must always be followed in order to prevent 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 (deformation or cracking), 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.

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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