Shimano GRX RX827 Di2 Groupset Description:
GRX Di2 brings Shimano’s 12-speed Di2 technology to gravel with a 1x drivetrain setup that reduces clutter, simplifies operation, and is built tough enough to handle the grueling nature of gravel and multi-terrain riding. Featuring quiet and stable operation thanks to Shimano’s Shadow ES derailleur clutch, the RD-RX827 rear derailleur accommodates 10-51T 12-speed cassettes, lending riders a capable gearing range that complements the needs of gravel and all-road riding. Users will find comfort in each hand thanks to textured, ergonomic shifter hoods designed to work seamlessly with flared handlebars. GRX Di2 Dual Control Rear Brake/Shift Levers feature three buttons for a flexible and customizable shifting experience, while a 1×12 speed-specific left brake lever reduces weight and simplifies operation.
Note: GRX Crankset sold separately
Features:
- Robust, 1 x 12 GRX electronic wireless gravel groupset
- Shifter hoods optimized for flared handlebars and rugged terrain
- Servo Wave brakes offer better modulation and 10% wider pad clearance
- Automatic Impact Recovery function retreats derailleurs on impact, then instantly returns to position
- Wireless battery is shielded within the derailleur, safe from outside forces
- Clutch derailleur keeps the chain in place over rough terrain
- 1x chainring combined with 10-51T cassette lends a simplified, but expanded range
- Groupset includes everything you need – except for the crankset and bottom bracket (which are size-specific)
Specifications:
- Speed: 1 x 12 Speed
- Shift Mechanism: Electronic (Wireless)
- Brake Type: Hydraulic Disc
- Brake Mount: Flat Mount
- Cassette Drive Type: Microspline
- Cassette Teeth: 10-51T
- Rotors:160mm (Front & Rear)
- Rotor Mount: Centerlock
- Color: Black
Groupset Includes:
- (1) ST-RX825 Right Shifter and Rear Brake Caliper (w/ Hose)
- (1) ST-RX825 Left Brake Lever and Front Brake Caliper (w/ Hose)
- (1) RD-RX827 SGS Rear Derailleur
- (1) CS-M8200-12 Cassette (10-51T) (Microspline)
- (1) CN-M8100 Chain
- (2) RT-CL800 Disc Brake Rotors (160mm) (Centerlock) (Lockrings Included)
- (1) BT-DN320 Rear Derailleur Battery
- (1) EC-DN100 Battery Charger
- (1) Disc Brake Adapter for 160mm Rear Rotor
Groupset Does Not Include:
- GRX 1x Crankset
- Shimano Bottom Bracket









































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