ByShimano
GRX Di2 Rear Derailleur 2x12 (RD-RX825)
Shimano GRX Di2 rear derailleur for 2x12-speed gravel drivetrains. Features Shadow RD+ design with chain stabilizer for quiet, precise shifting on rough terrain. Compatible with 11-34T and 11-36T cassettes. Serves as the Di2 system communication hub and charging port.
$409.99MSRP
Drivetrain · Rear Derailleurs
Image pending
SKU RD-RX825TypeRear Derailleurs
Disciplinegravel
Speeds12
Weight310 gManufacturer claimed
01 / About
The GRX Di2 Rear Derailleur 2x12 (RD-RX825).
Shimano's take on drivetrain.
Shimano GRX Di2 rear derailleur for 2x12-speed gravel drivetrains. Features Shadow RD+ design with chain stabilizer for quiet, precise shifting on rough terrain. Compatible with 11-34T and 11-36T cassettes. Serves as the Di2 system communication hub and charging port.
02 / Specifications
GRX Di2 Rear Derailleur 2x12 (RD-RX825) spec sheet.
Everything Shimano publishes for the GRX Di2 Rear Derailleur 2x12 (RD-RX825).
01Overview
5 fields
Type
Rear Derailleurs
Discipline
gravel
Brand
ShimanoExternal
SKU
RD-RX825Shimano part number
Product URL
02Drivetrain
7 fields
Speeds
12
Actuation
electronic
Subcategory
—
Power meter
—
Power meter type
—
Model line
GRX
Generation
RX820
03Pricing & availability
3 fields
Price
$409.99USD · MSRP
Availability
—
Weight
310 gManufacturer claimed
04Additional specs
9 fields
Max Cog
36
Min Cog
11
Cage Type
long
Total Capacity
39
Compatible Cassettes
11-34T, 11-36T
Chainline Mm
47
Material
aluminum, GFRP, steel, stainless steel
Shift Mode
Full / Semi-Synchronized
Mounting
direct mount