Shimano RD-RX820 GRX 12-Speed Double 36T Rear Derailleur

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  • Rugged reliability with fast & precise shifting
  • Compatible with 12-speed Hyperglide+ chains
  • For use with double chainset
WAS £119.99
SAVE 11%
Stock Status:
Stock due soon - order now for despatch in 7 days

Transform your cycling experience with the Shimano RX820 GRX 12-Speed Double 36T Rear Derailleur. Engineered for the avid gravel cyclist, this rear derailleur stands out in its class with exceptional features designed for rugged reliability and seamless performance. Whether tackling rough terrains or enjoying a smooth ride, the Shimano RX820 GRX is your ideal companion. Delve into the remarkable aspects of the Shimano RX820 GRX:

  • Stable Drivetrain: Utilises Shadow Plus technology, ensuring minimal chain bounce and a more stable drive, even on challenging terrains.
  • Precision Shifting: Experience fast and precise gear changes thanks to the low-profile 12-speed rear derailleur design, enhancing your ride's efficiency.
  • Durability and Lightness: Crafted from high-tolerance, cold-forged aluminium, this derailleur offers a perfect balance of durability and lightweight construction.
  • Hyperglide+ Compatibility: Designed for seamless integration with 12-speed Hyperglide+ chains, ensuring smooth and reliable shifting.
  • Versatile Gear Ratio: Compatible with up to 11-36T gear ratios, this derailleur supports a wide range of gears, suitable for double chainset configurations.

The Shimano RX820 GRX isn't just about technical superiority; it's about elevating your cycling journey. The perfect blend of stability, precision, and durability makes this derailleur an essential upgrade for gravel enthusiasts. It’s not just a component; it's a game-changer in your cycling performance.

Now is your opportunity to elevate your cycling adventures. Discover the unmatched performance of the Shimano RX820 GRX 12-Speed Double 36T Rear Derailleur. Experience the difference in your ride today.



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Online we currently accept payment from the methods listed above including a wide range of finance options. In store we also accept payment in the form of cash and gift vouchers.

Finance Options

In order to get the kit you want, when you need it, without ruining the family finances we offer a highly flexible range of finance options to help you get the best products on your bike now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.

D.T.(Automotives) Limited T/A Tweeks Cycles is authorised and regulated by the Financial Conduct Authority and is the broker and not the lender. Our FCA registration number is 689896. D.T.(Automotives) Limited offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance and Klarna. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority.

Delivery & Returns

UK Mainland Delivery Prices

Delivery Type Cost Estimated Delivery Time
Standard Delivery for orders under £49.99 from £1.33 2-3 working days from day of despatch(Excludes weekends and Bank Holidays)
Standard Delivery for orders over £49.99 Free
Express Delivery from £1.68 1-2 working days from day of despatch(Excludes weekends and Bank Holidays)
Special Delivery from £12.54 For any next working day delivery order before 4pm Monday to Thursday.
For any weekend delivery order before 4pm Friday
Click & Collect from £7.62 Collect your parcel from a local post office. 2-3 working days from day of despatch(Excludes weekends and Bank Holidays)

For international shipping please visit our delivery page.

For information about returning an item please visit our returns page.