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9.4
2017 Bikes
Shimano Shimano 105 FC5800 11-Speed Chainset - Double From £108.00
Was From £149.99
Save From £41.99(28%)
Shimano 105 FC5800 11-Speed Chainset - Double
Shimano 105 FC5800 11-Speed Chainset - Double
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105:

A lightweight HollowTech II chainset bringing Ultegra and Dura-Ace technology to the new 105 11-speed FC5800.

A new four-arm Hollowtech II design similar to that of current Ultegra and Dura-Ace. it's stiffer and lighter than the five-arm design it replaces, and Shimano has reinforced the construction around the chainring area to further improve the stiffness to weight ratio. 

This new design also means that there’s just one bolt circle diameter (BCD) for compact and traditional double chainsets, so one crankarm fits all chainrings. For example if you want to swap from 53/39T to 50/34T, you can do so using the same crankarm - simply change the chainrings rather than the whole chainset.

The chainring teeth have been developed to work in conjunction with HG-X 11-speed chains for increased contact to provide greater efficiency and improved power transfer. HollowTech II allows the bottom bracket bearings to be spaced wider apart, enabling the use of larger bearings and an increased axle diameter for a more precise power delivery and efficiency.

Crank Construction: 2-Piece Crank
Chain Compatibility: Super Narrow Sil-Tech HG for 11-Speed (CN-HG600)
Hyperdrive: Yes
Chainring Sets: 52-36T / 53-39T
Bolt Circle Diameter: 110
Crank Arm Length: 165/ 170/ 172.5 / 175mm
Bottom Bracket: SM-BBR60 / SM-BB71
Chain Line: 43.5mm
Approx Weight: 736g

HollowTech II bottom bracket cups (not included)

NB: Image for illustration purposes only

 

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