Shimano Ultegra FC-R8000 Crankset - 172.5mm | 50/34t

Shimano Ultegra FC-R8000 Crankset 172.5mm 50/34T, black, drive side

Shimano Ultegra FC-R8000 Crankset - 172.5mm | 50/34t

Shimano Ultegra FC-R8000 Crankset - 172.5mm | 50/34t

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How does the Shimano Ultegra FC-R8000 crankset fit an 11-speed build?

The Shimano Ultegra FC-R8000 crankset is the 2x11-speed road crank that anchors a mechanical Ultegra R8000, 105, or Dura-Ace drivetrain. It is built around Hollowtech II, the hollow-forged aluminum crank arm and 24mm steel spindle design that Shimano tunes for the best balance of stiffness, low weight, and efficient power transfer. This is the 172.5mm arm in black with 50/34T compact chainrings already fitted, so you get a ready-to-install crank and chainring set in one part, with no bottom bracket included.

Shimano gave the R8000 a wider gear pitch that adds clearance between the chain and leading teeth, which lets it work cleanly with modern disc road frames running 135mm rear spacing and 410mm chainstays. The 50/34T compact gearing pairs a usable top end with a friendly climbing ratio, and the crank runs HG-EV and HG-X11 11-speed chains. Add an SM-BBR60 threaded or press-fit bottom bracket to match your frame and it drops straight into any 11-speed mechanical Ultegra, 105, or Dura-Ace build.

$365.00
$365.00
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1 in stock

  • Orders over $100 ship free!
  • Estimated delivery: Jul 19 - Jul 23

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Specifications

  • MPN: FC-R8000
  • Series: Shimano Ultegra R8000
  • Speed: 2x11-speed
  • Construction: Hollowtech II
  • Crank arm length: 172.5mm
  • Chainrings: 50/34T compact (included)
  • Bolt circle diameter: 110mm, 4-arm
  • Q-factor: 146mm
  • Chain line: 43.5mm
  • Spindle: 24mm steel
  • Compatible chain: HG-EV 11-speed, HG-X11
  • Recommended bottom bracket: Shimano SM-BBR60 or SM-BBR60-PB (sold separately)
  • Approx weight: 674g (50/34T)
  • Color: Black
  • Warranty: 2 years
  • Includes: Crank arms with 50/34T chainrings and fixing bolt, no bottom bracket

FAQ

Does the FC-R8000 come with chainrings?

Yes. This crankset ships with 50/34T compact chainrings already fitted, so it is a complete crank and chainring set. A bottom bracket is not included and is sold separately.

What bottom bracket does it use?

It uses a Hollowtech II external bottom bracket with a 24mm spindle. Shimano recommends the SM-BBR60 threaded or SM-BBR60-PB press-fit bottom bracket depending on your frame's shell.

Which drivetrains is it compatible with?

It is a 2x11-speed road crank that runs HG-EV and HG-X11 11-speed chains and works across the mechanical Ultegra R8000, 105, and Dura-Ace road families. For best front shifting, Shimano pairs it with the FD-R8000 front derailleur.

What does the 50/34T gearing give me?

The 50/34T compact setup pairs a 50-tooth big ring for a solid top-end on flats and descents with a 34-tooth small ring that makes climbing easier, especially with a wide-range cassette. It is the most climbing-friendly of the R8000 chainring options.

Best For

Riders building or refreshing an 11-speed mechanical road drivetrain who want reliable Ultegra-level stiffness and power transfer, and anyone replacing a worn crank on a 105, Ultegra, or Dura-Ace 11-speed bike. The 50/34T compact gearing suits climbers, all-rounders, and endurance riders who value an easier low gear.

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