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Shimano GRX Di2 RD-RX825-SGS derailleur, 12-wheel

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Gravel/cyclocross electronic derailleur, for Shimano 2x12 speed system, designed for Di2 electronic shifting, for 11-34 tooth and 11-36 tooth cassettes, derailleur lock, LED battery indicator, weight 310 g.

Electronic derailleur for gravel bike riding or cyclocross racing with even more precise and faster shifting.

The Shimano GRX Di2 2x12 RX825 group is optimized for riding on forest roads and trails with 48/31z chainrings. or 46/30z. in conjunction with an 11-34z cassette. or 11-36z. These ratios guarantee an extremely wide gear range, so you can spin at a comfortable cadence, whether you're cruising on the flats, racking up miles on dirt roads, or tackling massive off-road climbs.

Shimano is pioneering the semi-wireless path in electronic systems, where individual shifting components do not have their own small battery, but are powered by a single wire from a battery hidden in the seat tube, thus achieving much longer functionality and battery life.

Among other things, the derailleur has an LED battery status indicator and a lockout - ON for gravel riding, OFF for smooth terrain without uneven terrain.

Technical designation: RD-RX825
Purpose: Gravel, Cyclocross
Total capacity: 40z.
MAX number of teeth of the largest sprocket: 36 teeth.
MIN number of teeth of the largest pinion: 34 teeth.
Technology: Di2
Weight: 310 g

Product details
Groupset Shimano GRX
Gears 1x12, 2x12
product ID 331946
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Road rear derailleurs from 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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