Shimano Ultegra R8050 Di2 11 Speed Rear Derailleur

Shimano Ultegra R8050 Di2 11 Speed Rear Derailleur
9 reviews
Largest cassette sprocket
Please select: Largest cassette sprocket
to see the stock
Cage Length
Please select: Cage Length
to see the stock
263,28 71,16 discount
Please select an option to view the stock

  • Delivery in 3-4 working days
  • Free tracked delivery to Portugal

Ask a question about this product

Email Customer Service
mantel-customer-service

Top Deal

Top Deal

Score the most popular products at competitive prices. Whether you are looking for tyres, a new chain or other accessories, with our Top Deals you will buy the best products at competitive prices.

Pros & Cons

Pros & Cons

  • The derailleur's electric shifting system allows for very fast and smooth shifting.
  • The position under the cassette ensures good handling on mud and wet terrain.
Read more on what our customers have to say about this product

Specifications

Specifications

Brand
Shimano
What groupset do you have?
Shimano Ultegra
Number of gears
11 speed
Shifting Type
Electronic
Weight
246 grams
Colour
Grey

Description

Description

The Shimano Ultegra R8050 DI2 Rear derailleur is a derailleur you can always rely on. Because of the Di2, the derailleur always shifts, regardless of mud or bad road surfaces.
In addition, the Shadow technology places the derailleur in a more sheltered position directly under the cassette. Offering more protection against fall impacts and increasing shifting speed.

What cassette can this derailleur handle?


• Short cage (SS): 11/25, 11/28, 11/30, 12/25, 14/25, 14/27, 14/28, 16/27
• Long cage (GS): 11/28, 11/30, 11/32, 11/34

Assembly

Loosen and tighten the gear cable.
To loosen and tighten the bolt with which the gear cable is attached to the derailleur, you need a 5 mm Allen key. You can find these here.

Removing the chain.
Before you can remove the derailleur, you will also have to remove the chain. How to do this, you can read here. You need a chain tool for that. We have these here. Make sure you buy one of the right brand and the right number of speed.

Use assembly grease for mounting.
If you are going to mount the new rear derailleur, it is best to apply some mounting paste to the threads of the derailleur hanger. You can buy this aseembly grease here.

Assembling jockey wheels.
To mount jockey wheels you need an Allen key of 2.5mm or 3mm. A handy Allen key can be found here:

User tips

Skew derailleur hanger?
A problem that crops up often is a skew derailleur hanger. It can happen if the derailleur knocked into something, for example in the case of a fall on the bike. Luckily it can be fixed! You can read more here.

Clean the jockey wheels well too!
Just like the chain, the jockey wheels on a derailleur get super dirty. As a result the shifting is not as good and it does the lifespan of your derailleur no good. For that reason, it's a good idea to clean the jockey wheels at the same time when you clean and lube your chain. Do this by running a cloth along the jockey wheel while gently turning the chain. Of course it gets to a point where the jockey wheels are worn out. In this blog post you can find out more about when jockey wheels should be replaced and what you'll need.
Show more Show less

Reviews

Reviews

4.8 / 5
Average from 9 reviews
5
4 reviews
4
1 review
3
0 reviews
2
0 reviews
1
0 reviews

Most recent reviews

5 / 5

Optimum gearstick

- Wolfgang 4 December 2023

I've been using Di2 components since 2015 and have been completely satisfied with them ever since.

Automatic translation

4 / 5

Pricey, but well worth the money

- DJ 11 August 2021

After having cycled with Di2 for years, you don't want anything else. It shifts accurately, quickly and easily, e.g. by trimming the front derailleur so your chain never touches the cage. One adjustment and you're set for years to come. Unfortunately, my old rear derailleur had broken (6800) series, so I quickly went looking for a new one. This R8050 was plug & play. Same connection, one adjustment and it rides like a charm again. The long cage is a nice bonus, I ride with 52/34 front and 11/32 rear, so it works fine!

Pros & Cons

plug&play with older versions of Di2
switches like a breeze
very precise
pricey
Automatic translation

5 / 5

Good system

- Rene 17 July 2021

Is a fantastic shifting system My previous one had broken down, motor, probably due to a crash

Pros & Cons

Fast delivery
Automatic translation

5 / 5

Works as expected

- Sam 21 March 2021

Works

Automatic translation

5 / 5

service rapide

- Philippe 13 March 2021

impeccable

5

Wolfgang, 4 December 2023

Optimum gearstick

I've been using Di2 components since 2015 and have been completely satisfied with them ever since.

Automatic translation

4

DJ, 11 August 2021

Pricey, but well worth the money

After having cycled with Di2 for years, you don't want anything else. It shifts accurately, quickly and easily, e.g. by trimming the front derailleur so your chain never touches the cage. One adjustment and you're set for years to come. Unfortunately, my old rear derailleur had broken (6800) series, so I quickly went looking for a new one. This R8050 was plug & play. Same connection, one adjustment and it rides like a charm again. The long cage is a nice bonus, I ride with 52/34 front and 11/32 rear, so it works fine!

  • plug&play with older versions of Di2
  • switches like a breeze
  • very precise
  • pricey
Automatic translation

5

Rene, 17 July 2021

Good system

Is a fantastic shifting system My previous one had broken down, motor, probably due to a crash

  • Fast delivery
Automatic translation

5

Sam, 21 March 2021

Works as expected

Works

Automatic translation

5

Philippe, 13 March 2021

service rapide

impeccable



Related products

Related products

Shimano Ultegra R8050 Di2
Shimano Ultegra R8050 Di2
263,28
This product
SRAM Force 1 Type 3.0
SRAM Force 1 Type 3.0
202,29
SRAM Force 22 11-speed
SRAM Force 22 11-speed
81,27
SRAM Force 22 WiFli 11-speed
SRAM Force 22 WiFli 11-speed
111,77
Compare the products above
Shimano Ultegra R8050 Di2 SRAM Force 1 Type 3.0 SRAM Force 22 11-speed SRAM Force 22 WiFli 11-speed
Shimano Ultegra R8050 Di2 SRAM Force 1 Type 3.0 SRAM Force 22 11-speed SRAM Force 22 WiFli 11-speed
9 reviews 0 reviews 2 reviews 4 reviews
What groupset do you have? Shimano Ultegra SRAM Force SRAM Force SRAM Force
Number of gears 11 speed 10 speed / 11 speed 11 speed 11 speed
Shifting Type Electronic Mechanical Mechanical Mechanical
Largest cassette sprocket 30T / 34T 36T 28T 32T
Cage Length Short Cage / Long Cage / IRDR8050GS Medium Cage Short Cage Medium Cage
Weight 246 grams 261 grams 178 grams 190 grams
263,28 202,29 81,27 111,77
This product View product View product View product