scheduleOur stores and their opening hours
Localisation
home navigate_next Components navigate_next Rear derailleurs navigate_next Road navigate_next Shimano GRX RD-RX812 rear derailleur, 11-speed, long cage (GS), Shadow +
Shimano

Shimano GRX RD-RX812 rear derailleur, 11-speed, long cage (GS), Shadow +

92.99 € savings
RRP 135 €
Found a better price?
Add to the list contact_supportProduct question
In-store pickup
From 11.02.2026 (Wednesday) Check availability
chevron_forward
delivery_truck_speed
By courier to your home Express courier delivery GLS Express courier delivery DPD
Delivery method on Thursday 12.02.2026
location_on
At collection points
Delivery method on Thursday 12.02.2026
replay
Extended return option up to 100 days More info
Rating (8)
Show all reviews
4,9/5
shopping_cart
more than 50 customers
have already purchased this product

Shimano GRX RD-RX812 rear derailleur

The RD-RX810 derailleur provides stable shifting performance, quiet and smooth operation even in difficult terrain.
Product features
Designed for 1x11 speed systems
Adjustable chain stabilizer SHIMANO Shadow RD+
Compatible with current Dual Control Lever road models
Suitable for cassettes with a combination of gears 11-40 to 11-42 teeth. Tension range: 31 teeth
Product details
Groupset Shimano GRX
Gears 2x11, 1x11, 3x11
Control type mechanical
Range 31 teeth
Material aluminium, steel
Weight 274 g
product ID 87354
Product rating  (8 ratings)
4,9/5
(8 ratings)
(7 ratings)
(1 rating)
(0 ratings)
(0 ratings)
(0 ratings)
How do you rate the product?
Add a review
Help others, earn points and shop better prices thanks to the loyalty system
Reviews verified Verified purchases
Add rating
comment Product question

WARNING
For installation, adjustment and replacement information about products not found in the user's manual, 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 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 avoid personal injury and physical damage to equipment and the environment. 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 environment.

WARNING
- Do not disassemble or modify the product. This may cause the product to malfunction, you may fall unexpectedly and be seriously injured.
- Never use alkali or acid based solvents such as rust removers. If a solvent is used, the chain may break and cause serious injury.
- Clean the chain regularly with a suitable chain cleaner. Maintenance intervals depend on the circumstances of use and riding.
- Check that the chain is not damaged (deformation or cracking), does not skip or show any other anomalies, such as arbitrary shifting. If any problems occur, contact the place of purchase or a distributor. The chain may break and you may fall.

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.
Contact information
Shopping FAQ

All the answers to questions about delivery, payment, security, returns, warranty and much else.

Similar products
You can try these searches
Road rear derailleurs, Shimano
You may find these products complementary
All products from the category
Road cassettes
Show all
Bike chains
Show all
Road and gravel bike shifting
Show all
Bike cable housings
Show all
Bike cables
Show all
Why shop with us?
Find out what makes us special
1 000 000+ orders

We are the largest cycling e-shop in Slovakia, verified by 100,000+ customers.

Unique customer service

We are available via e-mail, online chat, phone or in person at our MTBIKER stores.

We actively support the cycling community in Slovakia

Thanks to your order we can support cycling development.

Secure payment methods

The payment process is safe and we offer you a wide range of options.

Loyalty system

We will reward you for your purchase and also for quality contributions in the MTBIKER forum, e-shop, trips and photo gallery.

MTBIKER centre and showroom

Visit our store with a pump-track and trail access or our showroom in a historical bulding in central Bratislava.

navigate_beforeprevious navigate_nextďalší
keyboard_arrow_up