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Shimano GRX FD-RX820-F derailleur, 2x12, for welding

64.99 €
RRP 79.99 €
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From 26.01.2026 (Monday) Check availability
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Gravel cycling has its roots in simplicity, inclusiveness and curiosity. Everyone from beginners to grizzled veterans rely on Shimano GRX, the first gravel-specific set - for smooth shifting, reliable braking and exceptional off-road comfort.

Shimano GRX sets itself apart from the rest of the world of Shimano parts, and the new RX820 range offers premium performance at an incredible price, with thoughtful ergonomic design and gearing focused on gravel roads.

This is not an elaborate set of road components. It represents a fundamental view of how cyclists want to explore their world.

Shimano GRX helps you eliminate excuses, instead encouraging you to try a rough side road or last a little longer in the saddle.

The thoroughbred gravel derailleur GRX FD-RX820 is designed for a 2x12 speed drive, it is mounted on the weld of the frame and has a total capacity of 17 teeth. A suitable chain line for a derailleur is 47 mm and a chain stay angle of 63-66 °.

The weight of the derailleur is 270 g.

Gears: 2x12
Cable pull: Down Pull
Derailleur mounting: on the weld
Technical designation: FD-RX820-F
Chain line: 47 mm
Chain stay angle: 63-66°
Total capacity: 17 teeth

Product details
Groupset Shimano GRX
Gears 2x12
Control type mechanical
product ID 244675
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WARNING
For assistance with installation, adjustment, and replacement of products not found in the user's manual, please consult the place of purchase or a distributor. A dealer's manual intended for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to carefully read this "user's manual" before use, follow it for correct use, and save it so that you can refer back to it at any time.
The following instructions must always be followed in order to prevent personal injury and physical damage to equipment and the surroundings. The instructions are classified according to the degree of danger or damage that may occur if the product is used incorrectly.
DANGER - Failure to follow the instructions will result in death or serious injury.
WARNING - Failure to follow the instructions could result in death or serious injury.
CAUTION - Failure to follow the instructions could result in personal injury or physical damage to equipment and the surroundings.

WARNING
- Do not disassemble or modify the product. This may cause the product to not operate correctly, and you may fall unexpectedly and suffer serious injury.
- Be careful that your fingers do not get caught in the derailleur when operating the shift switch. The powerful motor that drives the electronic gear shift derailleur will run without stopping until the shift position is reached.
- Be careful that parts of your clothing do not get caught in the chain during riding. If they do, you may fall off the bicycle.

Shimano
Road Shimano
Japanese manufacturer produces road, mountain, gravel, trekking, BMX and e-bike groupsets. They also offer a whole series of components and apparel. Their range goes from wheels, footwear, eyewear to backpacks. Shimano is a traditional manufacturer known for their quality work, which is why they are the favourite choice of amateurs and professionals.
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