£38.00
Product Details
Performance
Built for gravel, the GRX RD-RX820 delivers silent, secure 12-speed shifting on rough and mixed terrain. Shimano's Shadow RD+ design with an adjustable chain stabiliser prevents chain slap and drops, and an ON/OFF stabiliser switch lets you match the setup to the terrain. The low-profile body reduces the risk of crash damage.
Options
Available in 36T, 46T and 51T maximum-sprocket versions to suit different cassette ranges - the wider-capacity options support mullet and wide-range setups. Select the version that matches your cassette.
Cassette Compatibility
36T: Top sprocket: Max. 11T/Min. 11T
Low sprocket: Max. 36T/Min. 34T
46T: Top sprocket: Max. 10T/Min. 10T
Low sprocket: Max. 45T/Min. 45T
51T: Top sprocket: Max. 10T/Min. 10T
Low sprocket: Max. 51T/Min. 51T
Features
- Shimano GRX RD-RX820 12-speed rear derailleur - secure, quiet gravel shifting
- Shimano Shadow RD+ design with an adjustable chain stabiliser to prevent chain slap and drops
- ON/OFF stabiliser switch to match the terrain
- Silent, secure shifting on rough and mixed surfaces
- Low-profile design reduces the risk of crash damage
- Available in 36T, 46T and 51T maximum-sprocket versions - select to match your cassette
Reviews
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Shipping & Returns
Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.
Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.
Q & A
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About Shimano
Shifting the way the world rides.
From a single Osaka workshop in 1921, Shimano has grown into the world's most influential component maker. The brand's relentless engineering — Dura-Ace, Ultegra, GRX, XTR — has shaped the way the world shifts, brakes and rides, on the road and off it.
Shimano's flagship groupset, Dura-Ace, has been the benchmark for top-level road components for more than five decades. Every refinement that lands on Dura-Ace eventually shapes the entire Shimano range, all the way down to entry-level drivetrains.
1731911 / 54308164665690
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