Shimano GRX RD-RX825 Di2 12 Speed Rear Derailleur
291035

kriya logo

Ways to apply

  • Build your basket and select Trade Credit at checkout.
  • Apply below to check your eligibility.

Activate your limit

  • If eligible, receive your Trade Credit limit instantly.
  • Authenticate your business with an ID check*.

*Only required on your first Trade Credit purchase.

Pay on account

  • Complete your purchase and pay on account at the end of the following month.
  • Enjoy no interest or transaction fees**.

**Late payments can impact your business credit

Already applied and have a limit? Approve your order via SMS to finalise your purchase.

FAQs Apply for Trade Credit

Shop now. Pay later. Always interest-free.

  • Add your favourites to basket

  • Select Clearpay at checkout

  • Log into or create your Clearpay account, instant approval decision

  • Your purchase will be split into 4 payments, payable every 2 weeks

Clearpay lends you a fixed amount of credit so you can pay for your purchase over 4 instalments, due every 2 weeks. Ensure you can make repayments on time. You must be 18+ and a permanent UK resident (excl Channel Islands). Clearpay charges a £6 late fee for each late instalment and a further £6 if it's still unpaid 7 days later. Late fees are capped at £6 for orders under £24 and the lower of £24 or 25% of the order value for orders over £24. Missed payments may affect your ability to use Clearpay in the future and your details may be passed onto a debt collection agency working on Clearpay's behalf. Clearpay is credit that is not regulated by the Financial Conduct Authority. T&Cs and other eligibility criteria apply at clearpay.co.uk/terms

New
Online Exclusive

Shimano GRX RD-RX825 Di2 12 Speed Rear Derailleur
291035

£324.99
Free standard delivery on bike parts, accessories & clothing
For orders under £20, £2.99 will be discounted at basket.
Clearpay now available. Buy now. Pay in 4.
Save a further £152.75 with Cycle2work
  • Fast, precise shifting even on the roughest roads
  • Built in chain stabiliser reduces chain slap
  • LED status battery indicator to easily check charge

1 Select Quantity

For fitting, please change quantity to 1 and add each item and fit separately
Please contact our Business team for larger quantities
Due to your increased order quantity, please find your new collection time below

2 Check Availability

Use my location
Please select a valid postcode or location from list
Booking system unavailable, please try again later.
FREE Click & Collect
Home Delivery
Shimano GRX RD-RX825 Di2 12 Speed Rear Derailleur
Shimano GRX RD-RX825 Di2 12 Speed Rear Derailleur
£324.99

Shimano GRX RD-RX825 Di2 12 Speed Rear Derailleur

  • 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 - ON for gravel, OFF for smooth roads.
  • LED battery status indicator.
  • Integrated D-FLY Connectivity and Charging.
  • Compatible with 11-34T and 11-36T 12-speed cassettes.

Electrifying Shimano’s 12-speed gravel component family, the new 2 x 12-Speed GRX RX825 Di2 components combine Shimano’s unrivalled electronic shifting with optimized gearing options for riding, racing, and all-day adventures. 

Designed for gravel riders who live to be in the moment, who venture down lonely, unknown dirt roads, who take on routes and races with unpredictable outcomes, Shimano GRX 12-speed Di2 delivers precise, reliable, distraction-free performance in all conditions.

Shimano's GRX Di2 12-speed rear derailleur features a built-in wireless connectivity unit and charging port, ensuring fast and reliable shifting for mixed-terrain riding and easy recharging. Integrated Shadow RD+ technology prevents chain slap and ensures precise shifting even on rough terrain. Thanks to the built-in ON/OFF switch, wheel removal is easy too. The RD-RX825 is compatible with 11-34T and 11-36T 12-speed cassettes and supports Full or Semi-Synchronized shift modes, enhancing rider customization.

Technical specifications:

  • Speeds: 12-speed
  • Shifting: Electronic, Di2
  • Top sprocket: Max. 11T/Min. 11T
  • Low sprocket: Max. 36T/Min. 34T
  • Total capacity: 40T
  • Weight: 310g

Compatible cassettes:

  • CS-HG710 11-36T 12-speed
  • Dura Ace CS-R9200 11-34T 12-speed.
  • Ultegra CS-R8100 11-34T 12-speed.
  • 105 CS-R7100 11-34T 12-speed.