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Shimano GRX RX815 Di2 rear derailleur, 11-speed, long cage (GS), Shadow+

269 €
RRP 289 €
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Delivery method on Monday 22.06.2026
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Delivery method on Monday 22.06.2026
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Shimano GRX RX815 Di2 derailleur

The Di2 RX815 electric derailleur provides stable shifting performance, quiet and smooth operation even in difficult terrain.
Product features
Designed for 2x11 speed systems
Adjustable chain stabilizer SHIMANO Shadow RD+
Compatible with current Dual Control Lever road shifters
Suitable for cassettes with gear combinations of 11-30 to 11-34 teeth
Product details
Groupset Shimano GRX Di2
Gears 2x11, 1x11, 3x11
Control type electronic
Capacity 38 teeth
Cage type GS - medium
Mounting type Direct mount
Material Aluminium / Steel
Weight 260 g
product ID 87355
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Product questions
filipvon filipvon • 7 February 2021 at 18:42
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Hello, is the data correct that the tension range is 38 z? I would like to use it for the 11-36 cartridge

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7 February 2021 at 18:42
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customer-support customer-support Customer support • 10 February 2021 at 17:55 •replyfilipvon
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SK Dobrý deň, áno je, takže môžete použiť tento prehadzovač.

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10 February 2021 at 17:55
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Attilka Attilka • 28 February 2023 at 19:18
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I wish you a dorby day!
Is this derailleur compatible with Dura Ace 9070?
Well thank you

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28 February 2023 at 19:18
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jaroslavf jaroslavf Customer support • 1 March 2023 at 6:06 •replyAttilka
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SK Dobrý deň,

Áno prehadzovačka bude kompatibilná.

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1 March 2023 at 6:06
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Attilka Attilka • 1 March 2023 at 17:22 •replyjaroslavf
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SK Dakujem

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1 March 2023 at 17:22
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bozon bozon • 31 august 2025 at 23:15
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SK Dobrý deň, predmetná prehadzovačka bude dostupná ?

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31 august 2025 at 23:15
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jaroslavf jaroslavf Customer support • 2 september 2025 at 13:48 •replybozon
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SK Dobrý deň,

Približne za 2 týždne bude dostupný u dodávateľa.

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2 september 2025 at 13:48
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WARNING
For information on installing, adjusting, and replacing products that are not found in the user's manual, consult the place of purchase or a distributor. A dealer's manual for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to read this "user's manual" thoroughly before use, follow it for correct use, and save it so that you can refer to it at any time.
The following instructions should always be followed in order to prevent personal injury, physical damage to equipment and the surrounding area. 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 instructions will result in death or serious injury.
WARNING - Failure to follow instructions could result in death or serious injury.
CAUTION - Failure to follow instructions could result in personal injury or physical damage to equipment and surroundings.

For items requiring replacement, contact the place of purchase or a distributor.
Be sure to follow the instructions below to prevent burns and other injuries due to leakage, overheating, fire or explosion.

DANGER
- Use the specified charging cable when charging the battery. Using any other items may result in fire, overheating, leakage or damage to the connected PC.
- Prevent the charging cable from getting wet and do not touch or hold it when it is wet or when your hands are wet. Failure to do so may cause operational problems or electric shock.
- Use an AC adapter with a USB port with a voltage of 5.0 V DC and a current of at least 1.0 A DC. If you use an adapter with a current value of less than 1.0 A, the AC adapter may heat up and cause fire, smoke, overheating, damage, electric shock or burns.
- Do not heat the battery or expose it to fire. Failure to do so may cause the battery to burn or burst.
- Do not use or leave the battery in hot or humid places where the battery may be exposed to direct sunlight, in a closed vehicle on a hot day, or near a heater. Failure to do so may result in fire, burns or other injuries due to leakage, overheating or bursting.
- Do not deform, modify or disassemble the battery. Also, do not apply solder directly to the battery terminals. Failure to do so may result in fire, burns or other injuries due to leakage, overheating or bursting.
- Do not touch metal terminals with metal objects such as hairpins. Failure to do so may cause short circuits, overheating, burns or other injuries.

WARNING
- Do not disassemble or modify the product. This may cause the product to malfunction, you may fall unexpectedly and be seriously injured.
- Always grasp the cable plug when connecting or disconnecting the USB cable or charging cable. Failure to do so may result in fire or electric shock.
- If the following symptoms occur, stop using the device and contact the place of purchase. Fire or electric shock may occur.
- If pungent smoke comes out of the mains plug or the plug heats up. There may be a bad connection inside the mains plug.
- If there is thunder during charging with an AC adapter with a USB port, do not touch the device, bicycle or AC adapter. Lightning strikes can cause electric shock.
- Do not use a USB hub to connect the cable to the PC's USB port. Charging failure or fire due to overheating may occur.
- Be careful not to damage the charging cable. Do not damage it, modify it, bend it forcibly, twist or stretch it, place it near hot objects, place heavy objects on it, or tie it tightly together. If used in a damaged condition, fire, electric shock or short circuit may occur.
- If the battery is not fully charged after 4 hours of charging, stop charging. Failure to do so may result in fire, bursting, ignition or overheating.
- Do not immerse the product in fresh or salt water and prevent the terminals from getting wet. Failure to do so may result in fire, bursting, ignition or overheating.
- Do not subject the product to strong impact or throw it. Failure to do so may result in bursting, overheating or operational problems.
- Do not use the battery if it shows leakage, discoloration, deformation or other unusual signs. Failure to do so may result in bursting, overheating or operational problems.
- Clean the chain and QUICK-LINK regularly with a suitable chain cleaner. Maintenance intervals depend on the circumstances of use and riding. Never use alkaline or acid-based solvents, such as rust removers. If such a solvent is used, the chain or QUICK-LINK may break and cause serious injury.
- Check the chain for damage (deformation or cracking), skipping or any other irregularities, such as spontaneous shifting. If any problems occur, contact the place of purchase or a distributor. The chain may break and you may fall.

CAUTION
- Store in a safe place out of the reach of small children to prevent accidental ingestion.
- Prevent grease from adhering to metal terminals. This may cause conduction failure.
- Do not leave the charging cable connected during maintenance.

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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