Shimano GRX RD-RX825 Di2
Best electronic shifting upgrade for dedicated gravel cycling enthusiasts.
This electronic rear derailleur brings precise, wireless shifting to gravel and mixed-terrain riding. It integrates a charging port and wireless unit directly into the body, while the adjustable clutch stabilizer keeps the chain secure and quiet over rough surfaces.
$445.00
at
Airpark Bike Co
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Who it's for
- Performance-oriented gravel racers seeking flawless gear transitions under pressure.
- Off-road adventurers who prioritize a quiet and reliable drivetrain.
- Tech-savvy cyclists who want a personalized and modern cockpit experience.
Who should skip it
- Budget-conscious riders looking for the best value-to-performance ratio.
- Long-distance bikepackers traveling far from reliable power sources.
- Custom builders wanting a simple single-chainring configuration.
Performance breakdown
Shifting Precision
Electronic actuation delivers flawless, consistent gear changes under any load.
Chain Security
Shadow RD+ clutch effectively eliminates chain slap on technical gravel descents.
Customization Depth
Synchronized shifting modes offer deep personalization for diverse riding styles.
Maintenance Ease
Integrated charging and wireless connectivity simplify setup and routine upkeep.
Weight Efficiency
Robust construction adds durability but carries a noticeable weight penalty.
Drivetrain Versatility
Wide 40-tooth capacity handles steep climbs and fast flats with ease.
Key Specs
Drivetrain Speeds
12
Cage Length
Long
Max Rear Cog Teeth
36
Min Rear Cog Teeth
11
Total Capacity
40 teeth
Mount Type
10x1 Standard, Shimano Rear Direct Mount
Weight
499 grams
Color
Black
Know before you buy
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Ask Metto anything about the Shimano GRX RD-RX825 Di2 before you decide.
