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Shimano GRX RX825 Di2 Rear Derailleur
Sale price
$445.00
Regular price
$445.00
Prices subject to change. How pricing works →
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In Stock Ships in 1-2 weeks based on its location
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SKU: IRDRX825A
Pickup available at RA Cycles Brooklyn
Pickup available at RA Cycles Walnut Creek
Qualifying customers may be able to pay with their HSA or FSA through Flex. Flex disclosures (opens in a new tab)
Stock Availability by Location
RA Cycles Brooklyn In stockLow stock (1 left)Low stock (2 left)— Out of stock— Not immediately available
105 5th Ave, Brooklyn, NY 11217718-636-5242
* Available for in-store pickup in 2-4 hours
* Available for in-store pickup in 2-4 hours
* Available for in-store pickup in 2-4 hours
RA Cycles Walnut Creek In stockLow stock (1 left)Low stock (2 left)— Out of stock— Not immediately available
2099 Mt Diablo Blvd, Walnut Creek, CA 94596925-433-7099
* Available for in-store pickup in 2-4 hours
* Available for in-store pickup in 2-4 hours
* Available for in-store pickup in 2-4 hours
Distribution Center - East In stockLow stock (1 left)Low stock (2 left)— Out of stock— Not immediately available
Distribution Center - Central In stockLow stock (1 left)Low stock (2 left)— Out of stock— Not immediately available
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Shimano GRX RX825 Di2 Rear Derailleur
$445.00
Shimano GRX RX825 Di2 Rear Derailleur Info
The Shimano GRX RX825 Di2 Rear Derailleur is the 12-speed electronic derailleur at the top of Shimano's GRX gravel groupset, built for 2x drivetrains that need to shift cleanly across rough, inconsistent terrain. It uses Shimano's Shadow RD+ design with a switchable clutch: flip it on and the derailleur cage holds steady over chatter and impacts, cutting chain slap and dropped chains on washboard and singletrack; flip it off and the wheel comes out easily for a quick tube change or transport.
As part of Shimano's Di2 system, the RX825 shifts wirelessly from the shift levers while staying wired to the battery, and it is the communication hub of the drivetrain, talking to compatible cycling computers and the E-TUBE PROJECT app for setup, firmware updates, and shift customization on the fly. It is built around 12-speed cassettes up to 34T or 36T, giving riders enough low-end range for loaded gravel climbs and technical grades without dropping to a 1x setup. At 310 grams, it adds minimal weight to a gravel build while carrying the same shifting precision Shimano's road Di2 derailleurs are known for, tuned instead for the wider gearing range and rougher use case gravel riding demands.
PRICE MATCH GUARANTEE
We will price match against advertised or quoted prices from other authorized dealers of the product!