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.

Details

Type: rear_derailleurs
Discipline: gravel
Price: $409.99
Weight: 310g
SKU: RD-RX825
Product URL: https://bike.shimano.com/en-US/product/component/grx-12-speed/RD-RX825-SGS.html
Availability: —

Specs

Speeds: 12
Actuation: electronic
Subcategory: —
Power meter: —
Power meter type: —
Model line: GRX
Generation: RX820

Full specs (JSON)

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