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Item # SHI0411

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Item # SHI0411


The FC-CX70 Crankset is Shimano's Ultegra-grade crankset for cyclo-crossers. The design focuses on stiff, lightweight performance in all kinds of conditions to sunny road riding to nasty, muddy slop.

  • Super-light HOLLOWTECH II construction
  • Spindle integrated with right crank arm for increased stiffness
  • Hyperdrive SG-X chainrings provide fast, accurate shifting, even in muddy conditions
  • New teeth design provides quick, smooth shifting

  • Superlight HOLLOWTECH II construction
  • Integrated spindle
  • Hyperdrive SG-X chainrings
  • Improved tooth profile
  • Cyclocross-specific 46T-36T

Tech Specs

Arm Material:
Chainring Sizes:
46 / 36 t
Bottom Bracket:
not included
BB Type:
Hollowtech II
Compatible Components:
Shimano STI levers
Recommended Use:
Manufacturer Warranty:
2 years

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Do I need any adaptors or washer kits to install the CX70 crankset onto my trek bike that has a BB90 bottom bracket?

Hi there,

No, the BB90 system uses a 24mm spindle with an internal bearing. The frame has a wider stance than traditional bottom brackets but you do not require any ancillary adaptors or washers. Simply use a shimano bottom bracket (24mm) for your bike, and you are good to go.


Unanswered Question

I need to replace my bottom bracket and I'm not sure which ones will work. The shimano bb 91 looks good as does the hope pf 46. What works? Gary ps I have the cx 70

Is this 10 speed and Sram shifter...

Is this 10 speed and Sram shifter compatible?

Hey Bill,

This crankset is indeed intended for a 10 speed drive train. The comparability with SRAM shifters with ultimately be determined with what front & rear derailleur. But you would be able to use this crankset with a Sram drivetrain.

Please let us know if you have any other questions.

Avg. ride time: 3h 41m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

What is the BCD of this crankset? Is it...

What is the BCD of this crankset? Is it 130?

Apologies for the delayed response Noah,

The bolt circle diameter for the 46/36 crankset is 110.