The Shimano GRX Di2 RD-RX825 rear derailleur delivers precision shifting for gravel bikes with its integrated chain stabiliser, keeping your drivetrain quiet and reliable on rough terrain.
Toggle the ON/OFF switch to deactivate the stabiliser when you hit smooth asphalt. Built with cold-forged aluminium for lightweight durability, this 12-speed Di2 derailleur handles sprockets up to 36 teeth, conquering steep climbs and technical descents with ease. Compatible with 12-speed E-tube Di2 systems and HG Plus chains, it's engineered for the demands of gravel cycling.
Features
- Silent and secure rear shifting on rough terrain
- Adjustable chain stabilizer prevents chain slap and drops
- SHIMANO SHADOW RD+
- Smooth and reliable shifting on mixed surfaces
- ON/OFF stabilizer switch matches terrain
- Compact design includes an integrated wireless unit, charger, and switch
- LED status indicator
- Battery indicator
- Pairing
- Adjust mode, etc.
Specification
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Use: Gravel, Cyclocross
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Group: GRX Di2 RX825
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Model: RD-RX825
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Mount: Direct attachment (Conventional)
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Technology: Shadow RD+
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Gear front: 2-speed
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Gear rear: 12-speed
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Compatible Chain: 12-speed HG
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Max. teeth large sprocket: 36T
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Min. teeth large sprocket: 34T
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Max. teeth small sprocket: 11T
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Min. teeth small sprocket: 11T
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Max. Front Difference: 17T
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Total Capacity: 40T
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Compatible electric wire: EW-SD300
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Firmware update by E-tube Project: Yes
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E-tube port (pcs): 1
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E-tube connector (pcs): 0
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Di2 Wireless-Chip: Yes
Material
Colour
Weight
Contents
- 1 x Shimano GRX Di2 2x12-speed RD-RX825 Rear Derailleur
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
Weights are based off pre-production products at time of publication. Weights may vary in final production.
