Shimano GRX RX815 Derailleur
Best electronic gravel derailleur for riders seeking precise, reliable off-road shifting.
This electronic front derailleur brings precision and reliability to gravel setups. By offering increased tire clearance and automatic trim adjustments, it removes the common frustrations of chain rub and mechanical limitations, ensuring smooth, consistent performance on rough terrain.
$290.00
More GRX options
Shimano GRX RX815 Rear Derailleur
$359.99
Shimano GRX RX400 Front Derailleur
$43.00
Shimano GRX Front Derailleur
$59.99
Shimano Stabilizer Unit
$14.00
Shimano GRX RX812 Rear Derailleur
$119.99
Shimano RD-RX820 Pulley Set
$25.00
Shimano Rear Derailleur Pulley Set
$25.99
Shimano GRX DI2 Rear Derailleur
$400.00
Shimano GRX Di2 Front Derailleur
$225.00
Shimano GRX RX810 Front Derailleur
$65.00
Shimano GRX RX400 Rear Derailleur
$60.99
Shimano GRX FD-RX815-F
$290.00
Shimano GRX RD-RD400 Rear Derailleur
$74.99
Shimano GRX Rear Derailleur
$145.00
Shimano GRX RX817 Di2 Rear Derailleur
$400.00
Shimano GRX RD-R815
$349.99
Shimano GRX RD-RX825
$445.00
Shimano GRX RD-RX815
$359.99
Shimano GRX RD-RX822-SGS
$145.00
Shimano GRX RX810
$117.99
Shimano GRX RX400 Front Derailleur
$43.00
Shimano GRX FD-RX820-F Front Derailleur
$70.00
Shimano GRX RD-RX825 Di2
$445.00
Shimano GRX FD-RX820-F
$70.00
Shimano GRX RD-RX820
$70.00
Shimano GRX RD-RX827
$565.00
Shimano GRX FD-RX815
$289.99
Shimano GRX Di2 Rear Derailleur
$400.00
Shimano GRX RD-RX825 Di2
$445.00
Shimano GRX RD-RX400
$67.50
Shimano GRX RD-RX717 Di2 Rear Derailleur
$435.00
Who it's for
- Competitive gravel riders needing flawless, instantaneous gear changes
- Off-road cyclists tackling rough, technical terrain
- Tech-savvy riders wanting a highly personalized shifting experience
Who should skip it
- Budget-conscious cyclists prioritizing mechanical simplicity and value
- Bikepackers venturing into remote areas without charging access
- Home mechanics preferring easy, cable-based maintenance
Performance breakdown
Shifting Precision
Di2 electronic actuation delivers flawless, instantaneous gear changes every single time.
Chain Security
The integrated clutch mechanism virtually eliminates chain slap on rough gravel.
Terrain Versatility
Adjustable tension lets you dial in performance for smooth or rugged roads.
Climbing Range
Wide-range cassette compatibility makes steep, loose ascents significantly more manageable.
Durability
Shadow RD+ design tucks the derailleur safely away from trail debris.
System Integration
Seamlessly pairs with existing road levers for a clean, unified cockpit.
Key Specs
Model
RD-RX817
Type
SHIMANO GRX - DI2 - Rear Derailleur - SHIMANO SHADOW RD+
Low Sprocket Compatibility
Max. 42T/Min. 40T
Top Sprocket
Max. 11T/Min. 11T
Total Capacity
31T
Know before you buy
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