Free 2-Day Shipping on Orders over $50–Order by Dec 20th

Detail Images

  • Shimano - 105 RD-5800 11-Speed Rear Derailleur -

Current Color

  • Shimano - 105 RD-5800 11-Speed Rear Derailleur -

Shimano 105 RD-5800 11-Speed Rear Derailleur

Temporarily Out Of Stock

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

Can't wait? Consider one of the other Gravel & Cyclocross Derailleurs we have in stock.

View Similar Products

4 Reviews


11-speeds, now for everyone.

While Dura-Ace is known as the top-tier in the Shimano component line, Ultegra has been known as the workhorse and in some cases the more durable of the two — it reaps the benefits of technological developments of Dura-Ace without the extra carbon bling. Now, the trickle-down is trickling even further. Shimano's new 105 RD-5800 11-Speed Rear Derailleur now benefits from much of the same top-tier engineering.

The new 105 rear derailleur features the same wider pivots as last year's iteration. They are more resistant to flex and twist, which ensures faster, smoother shifting. These were borrowed from the DA group. The new 5800 was updated with a new spring mechanism and cable pitch, which increases adjustability for perfect alignment. The body of the derailleur features more metal and less carbon, which makes it slightly heavier, but the mechanics now eclipse DA from just a few years ago. The biggest difference in the new 5800 is the addition of another cog. Yes, 11-speed componentry has become affordable for the masses.

The Shimano 105 RD-5800 11-Speed Rear Derailleur is available in Black in either a Long or Short cage version. The Long cage will accommodate a 32tooth rear cog, ideal for climbing and touring.

  • Item #SHI002U

Tech Specs

Cage Length
long, short
[long cage] 32 t
Compatible Components
Shimano 105 and Ultegra 11-speed
Recommended Use
road cycling
Manufacturer Warranty
2 years

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

Tried and True, for awhile

  • Familiarity: I've put it through the wringer

I have a cyclocross bike (equipped with this derailleur) that I use as a commuter in a city full of cobble stone streets. I also "explore" a lot on this bike. I'm currently on my second 105 rear derailleur. For the price you can't bet the smooth shifting and durability, but it will wear out. First one lasted me 1 year of riding almost every day and lots of abuse. As is it got old I started feeling a lot of vibration and it wouldn't hold chain tension, so the chain would jump off occasionally while riding on cobblestone, but no problems on pavement, ever. But, again, for the price it is a hell of a derailleur.

105 = Awesome

  • Familiarity: I've used it several times

I bought this rear derailleur as part of a 105 groupset to put on a spare frame I had laying around. I decided to go with 105 because the 105 has had a history of being Shimano's workhorse group and this 11 speed group is priced great, which leaves money for wheels or cockpit parts. Every component within the group got a good upgrade and resembles features found on the higher priced 11 speed Dura-Ace and Ultegra groups. The 105 groupset also allows for a pretty easy gear configuration if you're interested too (11/32 cassette, long cage rear derailleur & a 50/34 crank). If you're on a budget or want a group for a training bike, the 105 11-speed group is no-brainer option.

Will this work with the new CS-R7000 11-32T cassette? I don't see the old CS-5800 cassette available for sale anymore.