SHIMANO

Shimano GRX RD-RX827 SGS 12-speed Di2 Rear Derailleur

  • Fully wireless Di2 shifting
  • Auto-reset after impact
  • 10–51T cassette compatibility
  • LED and internal battery
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Shimano GRX RD-RX827 SGS 12-speed Di2 Rear Derailleur

The Shimano GRX Di2 RD-RX827 1x12-speed rear derailleur features the innovative SHIMANO SHADOW ES technology and comes in a single SGS long cage version. Built for rugged terrain and adventure riding, it ensures precise wireless shifting and exceptional durability.

The wedge-shaped low-profile design reduces snagging on rocks and debris, while the integrated chain stabilizer enhances chain retention. Automatic impact recovery resets the derailleur instantly after a hit, often without the rider even noticing.

Based on Shimano’s proven MTB Di2 technology, the GRX RX827 derailleur incorporates a removable onboard battery, a wide and solid linkage, and a skid-plate protected housing, making it perfect for gravel racers and adventurers alike.

  • Fully wireless Di2 shifting for clean cockpit and fast response
  • LED status indicator for quick feedback
  • Chain tension enhanced via dual spring stabilizing unit
  • Compatible with 10–51T SHIMANO 12-speed cassettes

Technical specifications:

  • Use: Gravel, Cyclocross
  • Group: GRX Di2 RX827
  • Model: RD-RX827-SGS
  • Mount: Direct attachment
  • Gear range: 1x12-speed (10–51T)
  • Chain compatibility: 12-speed HG
  • Max sprocket: 51T / Min sprocket: 10T
  • Cage type: SGS (long)
  • Materials: Aluminum, Stainless steel, PA-GF
  • Weight: approx. 449 g

Note: Battery BT-DN320 and Charger EC-DN100 are not included and must be purchased separately.