GRX Di2 2x12 front mech
Shimano GRX FD-RX825 Di2 Front Derailleur
The 2x12 GRX Di2 front mech, with its chainline set 2.5mm further out than road versions to clear wide gravel tyres. It changes rings quickly under load and works with 48-31T and 46-30T GRX chainsets.
Highlights
Why we rate it
Room for big tyres
The wider gravel chainline leaves more space around chunky tyres than a road front mech.
Strong shifts under load
Electronic control moves the chain between rings reliably, even mid-climb.
Synchro and Front Shift Next
Set up full or semi-synchronised shifting, or customise front shifting through E-Tube.
Wide gearing
A 17T capacity suits GRX's wide 2x chainring combinations.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Model code
- FD-RX825 (FD-RX825-F)
- Speeds
- 2x12
- Actuation
- Di2
- Mount
- Braze-on (clamp adapter sold separately)
- Max outer chainring
- 48T
- Max chainring difference
- 17T
- Chainline
- +2.5mm vs road (gravel)
- Swing
- Down swing
- Port
- 1 x EW-SD300 E-Tube
- Chain
- Shimano HG 12-speed
Ordering
Available from The Cycle Collective
Available to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.