Product Details
Shimano GRX 820 Double Groupset
Optimised for mixed terrain riding with a double chainset and small step gearing, the 12-Speed GRX 820 Groupset is the pinnacle of Shimano's gravel range
In the Box
- ST-RX820 GRX 12-speed STI bled with BR-RX820 flat mount calliper, right front
- ST-RX820 GRX 2-speed STI bled with BR-RX820 flat mount calliper, left rear
- RD-RX820 GRX 12-speed rear derailleur, Shadow+ max 36T for double
- FD-RX820 GRX front mech, 12-speed double, down pull, braze-on
- FC-RX820 GRX chainset 48 / 31, double, 12-speed, Hollowtech II
- CS-HG710 12-speed cassette, 11 - 36T
- CN-M8100 XT/Ultegra chain with quick link, 12-speed, 126L
Features
- Greater comfort and control on mixed-terrain
- Streamlined cockpit lets you stay focused
- Smaller gear steps for cadence control on mixed terrain riding
- Gear combination: 48-31T
- Silent and secure rear shifting on rough terrain
- Lighter front shifting
- Wider tire clearance
- Wider range front gearing
- Precise and easy front derailleur adjustment
- 10% wider pad clearance decreases brake noise
- Maintenance-friendly bleeding process
Specifications
- Discipline Compatibility
- Gravel
- Family
- Shimano GRX
- Intended Use
- Performance
- Speed Compatibility
- 12-speed
- Product code
- 1729970 / 54294835790170
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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.