Shimano Ultegra Di2 R8050 11-speed Rear Derailleur

Shimano Ultegra Di2 R8050 11-speed Rear Derailleur

Regular price RRP: £259.99 Sale price£210.79 Save 19%

🚚 FREE Standard UK Shipping on all orders over £20

The Ultegra Di2 R8050 11-Speed Rear Mech will help you maintain race-pace and concentration via smooth and crisp shift control. 

Updated with a SHIMANO SHADOW RD design, the SHIMANO ULTEGRA 8000 rear derailleur offers a sleek appearance and optimized shifting performance.

The RD-8050 Di2 versions offer the digital precision of SHIMANO electronic shifting and synchronized shifting.

Short and Medium cage sizes available

  • Cassette Capacity: 
    • Short Cage: 11-25T to 11-30T
    • Medium Cage: 11-28T to 11-34T
  • Weight: 
    • Short Cage: 240g;
    • Medium Cage: 247g

We ship fast! Our stock levels are updated live and most orders placed before 14:00hrs are shipped same-day (Monday to Friday).

Each product page will show estimated dispatch times.


  • Standard UK shipping is FREE on all orders over £20.
  • Express shipping options are available on checkout.
  • We also offer Click & Collect from our Warehouse Mon to Fri 9:00 to 5:00 - kindly wait until we confirm your order is ready before visiting.


  • Europe standard shipping is £3.99 with an Express option available.
  • We have had to disable shipping to the EU. We hope to be able to resume shipping to more EU destinations shortly.


  • We have had to suspend shipping outside of the UK. We hope to be able to resume shipping worldwide shortly.

We offer a no-quibble 30-days refund policy*. There's no need to contact us before returning your item(s). Simply send it back to the following address:

Sprocket and Gear (Returns), Kingfisher Works, Tag Lane, Hare Hatch, RG10 9SH, United Kingdom

Be sure to include your order number and reason for return. Sorry, but we can't cover, or contribute to, the cost of the return.

* To read our full returns/refund policy please click here.


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Customer Reviews

Based on 6 reviews
Does what it says on the tin

Genuine OEM replacement part, fitted exactly as expected.

Fast shipping from S&G and 15% cheaper than anywhere on the internet.

No complaints.

Richard Stephens
Arrived in just 2 days

Arrived in just 2 days - perfect condition and works fine (as expected)

Graham Shaw
Best in class service!

I’d struggled to find this part anywhere due to Shimano supply chain issues. Even my local bike shop had nothing other to suggest than eBay or wait a few months until their supplier had restocked. I found myself bidding for a second hand Di2 rear mech which went for above RRP in the end! That’s when I stepped up the search and found one here, brand new AND IN THE SALE. It felt too good to be true but nonetheless I ordered it, it arrived rapidly and my local bike shop had my bike up and running within just a few days. 10 / 10 for price, quality and delivery. Well done and thank you!!

Craig Groves
Fast and good value.

Great price and mega quick delivery. I was surprised to see it arrive the next morning.

Di2 Ultegra R8050 Rear Derailleur

Excellent Service and product

Gavin Watts

Prompt delivery, as advertised, great price