Shimano GRX RD-RX827 12-Speed Di2 Wireless Rear Derailleur
The Shimano GRX RD-RX827 12-Speed Di2 Wireless Rear Derailleur brings fully wireless electronic shifting to gravel riding with rugged gravel specific performance. Designed for a 1×12 drivetrain, it works with cassettes up to 10-51T to cover steep climbs, fast flats and rough terrain. Shimano Di2 wireless technology delivers fast precise shifts without external cables and pairs with 12-speed GRX shifters. A removable internal battery sits protected inside the derailleur body and charges easily when needed.
Shimano built the GRX RD-RX827 derailleur to handle impacts using a wide link design, skid plate and solid pulleys. Shimano SHADOW ES stabilizes the chain, reduces noise and limits chain slap on rough surfaces. Automatic Impact Recovery restores derailleur alignment after impacts to keep shifting accurate. Sealed components improve durability in mud, dirt and wet riding conditions.
Please note: Battery sold separately.
Technology
Shimano’s SHADOW ES
The GRX RD-RX827 derailleur uses the new SHADOW ES, a slimmed down evolution of the Shadow chain retention system. It helps minimize drivetrain noise while improving shift quality on rough terrain.
Automatic Impact Recovery
If a rock strike occurs, the derailleur is designed to move out of the way utilizing bumper-style skid plates. After the strike, a motor unit moves the derailleur back into the gear it was originally in so you can keep riding without pausing.
Shimano Di2 True Wireless Shifting
The RD-RX827 brings true wireless shifting and customization to your GRX 12-speed drivetrain. No wires, no fuss.
Compatibility
- Drivetrain: Compatible with Shimano GRX Di2 full wireless 1x 12-speed drivetrains.
- Cassette: Works with 10-51T cassettes.
Specs
- Speed: 12-speed
- Color: Black
- Cage material: Aluminum
- Weight: 449 grams
Why Buy from Power Meter City
1. We ship fast! All orders ship on the same day your order is placed!
2. We are an authorized Shimano dealer and this product comes with a full warranty.
3. Expert advice and customer service in case you need any help.
4. We offer a free, 30-day return policy on new items.
About our Company
At Power Meter City, we focus on power meters and related accessories and components. Our focus on these products means we can offer you the best possible selection, advice and service.
We have been in business since 2016 and are based in southern California. We are an authorized dealer of every product we sell.