What makes it special
Shimano / Bike Derailleurs
Shimano GRX RX825 Di2 12-Speed Rear Derailleur
Shimano's GRX Di2 rear derailleur offers the perfect mix of durability and weight savings for all your gravel needs.
Ship to store · free pickup, usually ready in 4–7 business days
Free pickup at any of our four stores. Questions? We're happy to help.
About this product
The details.
United in gravel
Shimano's GRX Di2 12-speed rear derailleur features a built-in wireless connectivity unit for fast and reliable shifting in mixed-terrain, while the integrated charging port makes recharging a breeze.
Product details
- Compact design with integrated wireless unit, charging port, and switch
- Fast and reliable shifting on rough terrain
- Adjustable chain stabilizer prevents chain slap
- Gravel-tuned clutch tension
- Switch stabilizer ON/OFF to match terrain, use ON for gravel, OFF for smooth roads
- LED status indicator
- Top sprocket: Max. 11T/Min. 11T, Low sprocket: Max. 36T/Min. 34T
- Total capacity: 40T
The details
Good to know-
Specs4
- Manufacturer part #
- IRDRX825A
- Cage
- Middle cage
- Speed
- 12
- Largest cog
- 34t
Good to know1
- 30-Day Unconditional Guarantee If for any reason you're not satisfied with a Rapha product bought from Trek, return the item, along with the original sales receipt to the original place of purchase within 30 days for an exchange or refund. Think of it as a 30-day test ride.
Complete your setup
Goes well with.
Keep exploring
You may also like.
Four neighborhood stores. One shared passion.
Let's find your next adventure.
Ansley. Alpharetta. Roswell. Vinings. Stop by, take a test ride, ask questions, and meet the people who will be here long after your first ride.