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  • Shimano 105 5800 11 Speed Groupset
  • Shimano 105 5800 11 Speed Groupset
NOW$497.49
  • RRP$854.99
  • |
  • SAVE42%

Select  BoltCircle
110mm
130mm
Select  Colour
Select  Derailleur Type
Braze On
Select  Length
172.5mm
Select  Option
116 Link Chain/Short Cage Rear Derailleur
Select  Size
11-28t
Select  Teeth
50.34t
53.39t
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    Due 05/09/2014

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Shimano 105 5800 11 Speed Groupset

Smooth, Round and Natural' - the ethos behind Shimano 105 components. The 105 groupset makes 'pro-level' technology more accessible to part time racers and fitness enthusiasts.

The all new 105 5800 Groupset now has an 11 Speed Drivetrain , with all components gaining trickle down technology from Shimano’s existing Ultegra and Dura-Ace groups.

5800 Crankset Features:

The new 5800 Crankset features a new four-arm Hollowtech II design similar to that of the current Ultegra and Dura-Ace. The new chainset is stiffer and lighter than the five-arm design it replaces and Shimano have reinforced construction around the chainring area to further improve the stiffness to weight ratio.

  • 105 FC-5800 Chainset 53.39t or 50.34t
  • Crank Arm Length: 172.5mm
  • HOLLOWTECH II design - Optimum balance of lightweight and stiffness
  • New gear dimension for great improvements
  • Improved gear for less chain touch in small/ small combination
  • Hyperdrive SG-X-chainrings
  • DUAL-SIS-compatible
  • Includes Bottom Bracket

Dual Control Shifters Set STI 105 ST-5800 Features:

105 now gains the light and responsive shift action found in Dura-Ace and Ultegra Levers, with a new compact shape that’s been borrowed from the levers of Shimano’s more expensive groupsets. The lever can also be adjusted to accommodate different hand sizes.

  • Powerful and controllable braking system

105 Rear Derailleur RD-5800 SS Features:

Shimano has included a new spring mechanism and cable pitch in the new 105 rear derailleur in order to provide robust adjustability.

  • Short Cage

105 Front Derailleur FD-5800 Braze On:

The new 105 front derailleur has a longer link arm and a new spring mechanism compared with the last generation component.

  • Braze On

105 Brakes Set BR-5800:

The new 105 brakes feature a new symmetrical dual pivot calliper design, with a higher arch allowing clearance for up to a 28mm wide tyre. This results in a 10% increase in power.

105 Cassette CS-5800:

The new 105 11 Speed Cassette uses close ratios that Shimano say optimise rhythm and cadence control.

  • 11.28t

CN-HG600 11-Speed Chain:

The new CN-HG600 11-Speed Chain uses Shimano’s low friction surface treatment known as SIL-TEC. The new chain’s PTFE surface coating reduces friction whilst boosting durability. The technology first debuted on Shimano’s flagship Dura-Ace 9000 Chain a couple of years ago.

  • 116 Links

Buy Shimano 105 5800 11 Speed Groupset from Chain Reaction Cycles, the World’s Largest Online Bike Store.

  • Colour: Silver, Black
  • Size: 11-28t
  • Option: 116 Link Chain/Short Cage Rear Derailleur
  • BoltCircle: 110mm, 130mm
  • Teeth: 50.34t, 53.39t
  • Speed: 11 Speed
  • Length: 172.5mm
  • Material: Alloy
  • Derailleur Type: Braze On
 
4 Questions : 5 Answers

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Age: 65 or over
Gender: Male
4 months, 1 week ago
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Duffy,AU
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Answer: 
It's the diameter of the circle of chainring bolts - 130mm for a standard double and 110mm for a compact double. It means that when you replace the chainrings you can only buy rings with that BCD, so you couldn't fit compact rings to what was a standard double and vice versa. There's no "choice" or "preference", it's just what you'll get depending on whether you buy a compact or standard crankset.
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4 months, 1 week ago
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Whitstable,GB
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Answer: 
The new Shimano 105 5800 crankset will have a Bolt Circle Diameter of 110mm only, as standard, and will offer the same asymmetric 4-bolt chainring bolt system as the current Shimano Dura Ace 9000 crankset and the current Shimano Ultegra 6800 crankset.
This system makes it possible to run both standard 53-39 and compact 50-34 chainring combinations on the same crankset. Chainring combinations for the Shimano 105
5800 crankset will be available in the following options : 53-39, 52-36, and 50-34.
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1 answer

Are all hubs, cables and casings included?

Age: 35 to 44
Gender: Male
2 months, 2 weeks ago
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Limerick,IE
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Answer: 
Hubs are no longer supplied with grouspets as standard; it is only the drivetrain/ transmission that is included. A full cable kit (inner and outer) is included.
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Answer: 
Unfortunately these groupsets are supplied as they are spec'd by Shimano; but a Braze On adaptor can be purchased separately to solve this issue.
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I have Shimano R500 wheels with a 9 speed setup at the moment. Are the free hubs (splines) the same for the 11 and 9 speed cassettes? Im also presuming the the bottom bracket is interchangeable (BB-ES25) Thanks in advance.
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Answer: 
A Shimano 105 11 Speed 5800 Cassette is not compatible with Shimano R500
Wheelsets which are 8, 9, 10 speed compatible only. The splines are identical but the 11
speed cassette again is not compatible with Shimano R500 Wheelsets because
the free hub on your wheelset is to narrow to accommodate a Shimano 11 Speed Cassette.
If you wish to purchase this Groupset you will require a wheelset which is compatible
with 11 speed cassettes. The Shimano Octalink BB-ES25 is not compatible with the
Shimano 105 FC-5800 Chainset.
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