Shimano GRX Di2 RX825 2x12

GRX Di2 RX825 2x12 by Shimano for Gravel Riding
The GRX Di2 RX825 2x12 from Shimano is designed specifically for gravel riding, offering a reliable and smooth shifting experience with its 12-speed semi-wireless electronic system. This groupset features hydraulic disc brakes with flat mount caliper mounting, ensuring precise and consistent stopping power on varied terrain. Its semi-wireless shift system reduces cable clutter while maintaining responsive gear changes. The GRX series is known for its durability and optimized performance on rough surfaces, making it a solid choice for your gravel adventures. You’ll appreciate the intuitive shifting and robust brake setup that handle the demands of off-road conditions. This groupset does not include e-bike compatibility, focusing solely on traditional gravel bike performance. The 2x12 drivetrain provides a wide gear range to tackle climbs and fast descents comfortably. With Shimano’s attention to detail, you get a component set that balances technology and reliability. Upgrade your gravel bike with this groupset for a dependable ride on mixed surfaces.

black | 170,0 mm | 11-36 | 31-48:

Crank Arm Length:

170,0 mm

Gear Ratio Cassette:

11-36

black | 172,5 mm | 11-36 | 31-48:

Crank Arm Length:

172,5 mm

Gear Ratio Cassette:

11-36

black | 175,0 mm | 11-36 | 31-48:

Crank Arm Length:

175,0 mm

Gear Ratio Cassette:

11-36

black | 170,0 mm | 11-36 | 31-48:

Gear Ratio Crank:

31-48

black | 172,5 mm | 11-36 | 31-48:

Gear Ratio Crank:

31-48

black | 175,0 mm | 11-36 | 31-48:

Gear Ratio Crank:

31-48

• High-performance GRX Di2 RX825 2x12 drivetrain designed for precise and reliable 12-speed electronic shifting on gravel rides
• Semi-wireless shift system reduces cable clutter for cleaner setup and easier maintenance
• Hydraulic disc brakes with Flat Mount for powerful, consistent stopping power in all conditions
• Specifically engineered for gravel biking, balancing durability and smooth operation on mixed terrain
• Compatible with modern gravel bike frames, offering a sleek, integrated look and efficient performance

• black | 170,0 mm | 11-36 | 31-48: WGRXDI212FACH17048311136
• black | 172,5 mm | 11-36 | 31-48: WGRXDI212FACH172548311136
• black | 175,0 mm | 11-36 | 31-48: WGRXDI212FACH17548311136

2 x Shimano GRX Di2 BR-RX820 + GRX ST-RX820 Disc Brake, front and rear
1 x Shimano GRX Crankset (FC-RX820-2)
1 x Shimano GRX Shadow Plus Rear Derailleur (RD-RX825)
1 x Shimano GRX Front Derailleur (FD-RX825)
1 x Shimano 105 Cassette (CS-HG710)
1 x Shimano Ultegra / XT Quick-Link Chain (CN-M8100)
2 x Ultegra RT-CL800 Brake Rotor
1 x Shimano SM-BH90-JK-SSR 1000 mm Brake Hose (front)
1 x Shimano SM-BH90-JK-SSR 1700 mm Brake Hose (rear)
2 Pair Shimano Brake Pads
1 x Disc Brake Adapter for front
2 x Hose Connection Set with Olives and Insert Pins
2 x Mounting Bolt Type A (front)
2 x Mounting Bolt for 25 mm Frame Diameter (rear)
1 x Shimano Di2 BT-DN300 Battery
1 x Shimano EW-EC300 USB Charging Cable
2 x EW-SD300-I Electric Wire
Brake Set ready to install, filled, bleeding is recommended after installation