Shimano GRX RD-RX820
12-speedDelivered between Tue, 12.8. and Wed, 13.8.
More than 10 pieces in stock at supplier
More than 10 pieces in stock at supplier
free shipping
Product details
The RD-RX820 is compatible with 12-speed cassettes 11-34T and 11-36T, offering a wide gear range so you can maintain a comfortable cadence in any terrain. The Shimano GRX 12-speed rear derailleur also features an integrated chain stabilizer, ensuring quieter shifting and secure chain management during rough rides. The chain tensioner has an ON/OFF switch for rides on smooth surfaces.
Bike area of use | Gravel |
Cage length | Short |
Item number | 37750866 |
Manufacturer | Shimano |
Category | Rear derailleurs |
Manufacturer no. | IRDRX820 |
Release date | 28.8.2023 |
Colour | Black |
Exact colour description | Black |
Material group | Metal |
Material | Aluminium |
Cassette compatibility | 12-speed |
Maximum pinion size | 36 x |
Shift capacity | 42 x |
Bike area of use | Gravel |
Cage length | Short |
Fixation rear derailleur | Direct mounting |
Design rear derailleur | Shadow+ |
Switching system | Mechanical-switch |
Circuitry | Top normal |
Model year | 2023 |
Country of origin | France, Japan |
CO₂-Emission | |
Climate contribution |
Weight | 270 g |
Length | 16.10 cm |
Width | 15.70 cm |
Height | 10.40 cm |
Weight | 449 g |
Specifications may include unverified machine translations.
30-day right of return
24 Months Warranty (Bring-in)
1 additional offer
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Reviews & Ratings
Warranty score
How often does a product of this brand in the «Rear derailleurs» category have a defect within the first 24 months?
Source: Digitec Galaxus- 1.Shimano0.2 %
- 2.Sram0.9 %
Warranty case duration
How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: Digitec Galaxus- 1.Shimano2 days
- 2.Sram7 days
Return rate
How often is a product of this brand in the «Rear derailleurs» category returned?
Source: Digitec Galaxus- 1.Shimano3.2 %
- 2.Sram4.9 %
Source: Digitec Galaxus