Shimano GRX RX825 Di2 2x12 Speed Groupset

Shimano GRX RX825 Di2 2x12 Speed Groupset
2 reviews
Crank length
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Cassette Ratio
Select a variant
5502,50

  • Delivery in 3 working days
  • Free tracked delivery to Poland
  • Trustpilot rating 4.6/5

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Pros & Cons

Pros & Cons

  • The Shimano GRX RX8255 Di2 12 speed groupset is a complete, high-end electronic groupset for gravel bikes.
  • This groupset's shifters feature a third Di2 button to operate your bike lights, computer or other devices.
  • The ergonomic design of the GRX RX825 shifters fits handlebars with a flare design and reduces hand strain, increasing your control on uneven terrain.
  • The rear derailleur is outfitted with the Shadow RD+ system for quiet and precise shifting, which also allows you to easily remove your rear wheel.
  • The hydraulic disc brakes are specifically tailored for gravel and off-road use, so you can count on precise and efficient brake performance no matter the circumstances.
  • The new Shimano GRX RX825 is only available as 2X version.
Read more on what our customers have to say about this product

Specifications

Specifications

Brand Shimano
Brake Type Disc Flat Mount
Number of gears 12 speed
Type 2x12
Shifting Type Electronic
Power Meter Without power meter
Crankset (Axle) Type Hollowtech II
Crankset Type Double
Crank Ratio 48 / 31
All specifications

Reviews

Reviews


5 / 5

Great product and unbeatable price

- IÑAKI 23 March 2026

Smooth-running and very reliable electronic unit

Automatic translation

5 / 5

Very good

- Benoît 19 November 2025

The order was very well placed and met my expectations. Even though there was a gap in the order, the team, and Nils in particular, gave me good advice and guidance to solve my problem.

Automatic translation

5

IÑAKI, 23 March 2026

Great product and unbeatable price

Smooth-running and very reliable electronic unit

Automatic translation

5

Benoît, 19 November 2025

Very good

The order was very well placed and met my expectations. Even though there was a gap in the order, the team, and Nils in particular, gave me good advice and guidance to solve my problem.

Automatic translation

Recommended by the product specialist


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Shimano GRX RX825 Di2 2x12 Speed Shimano GRX RX827 Di2 1x12 SRAM Apex XPLR AXS 1x12 Shimano GRX RX717
Shimano GRX RX825 Di2 2x12 Speed Shimano GRX RX827 Di2 1x12 SRAM Apex XPLR AXS 1x12 Shimano GRX RX717
2 reviews 3 reviews
Brake Type Disc Flat Mount Disc Flat Mount Disc Flat Mount Disc Flat Mount
Number of gears 12 speed 12 speed 12 speed 12 speed
Type 2x12 1x12 1x12 1x12
Shifting Type Electronic Electronic Electronic Electronic
Power Meter Without power meter Without power meter Without power meter Without power meter
Crank length 172.5 mm 170 mm / 172.5 mm 170 mm / 172.5 mm / 175 mm 170 mm / 172.5 mm
5502,50 5061,90 3960,60 4163,20
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All specifications

General

Brand
Shimano
Brake Type
Disc Flat Mount
Number of gears
12 speed
Type
2x12
Shifting Type
Electronic
Crankset (Axle) Type
Hollowtech II
Crankset Type
Double
Crank Ratio
48 / 31
Bottom Bracket
No, not included
Cables
Electronic derailleur cables / Hydraulic brake lines
Colour
Black
Diameter Disc Brake Rotor
160 mm front / 160 mm rear

Sensors

Power Meter
Without power meter

All specifications

Brand
Shimano

General

Brake Type
Disc Flat Mount
Number of gears
12 speed
Type
2x12
Shifting Type
Electronic
Crankset (Axle) Type
Hollowtech II
Crankset Type
Double
Crank Ratio
48 / 31
Bottom Bracket
No, not included
Cables
Electronic derailleur cables / Hydraulic brake lines
Colour
Black
Diameter Disc Brake Rotor
160 mm front / 160 mm rear

Sensors

Power Meter
Without power meter