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CYBREI Ultra Carbon Crank Assembly

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$718.00

CYBREI’s LIGHTEST CRANK

Taking carbon cranksets to the next level.

  • Featherweight Performance: Sub-270g assembly engineered for maximum climbing efficiency.
  • High Torsional Stiffness: Ultra-stiff 28.99mm carbon fiber spindle integrated into the assembly.
  • Broad Compatibility: Designed to work seamlessly with the standard 28.99mm bottom bracket interface.
  • Optimized Ergonomics: 150mm Q-Factor for improved stance width, stance alignment, and aerodynamics.
  • Modern Fit Sizing: Available in 6 length options ranging from 155mm to 172.5mm.
  • *Availability Note: Select your preferred crank length below to check current stock.

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SKU: CYBREI-04-ULTRACRANK Categories: ,

Description

CYBREI ULTRA CARBON CRANK

The Ultimate Lightweight Upgrade

CYBREI led the charge in the first wave of carbon cranks, now they've taken it a step further. 

Push the boundaries of your ultra-light dream build with the CYBREI Ultra Carbon Crank Assembly. Weighing in at an astonishing ~270 grams, this crankset sheds every unnecessary gram without compromising the stiffness you need for explosive sprints and grueling climbs. Designed for the modern performance cyclist, the CYBREI Ultra utilizes cutting-edge carbon layups to deliver top-tier power transfer.

ON BUILD

Key Features

  • Revolutionary Carbon Axle: By replacing the traditional alloy spindle with a highly engineered carbon axle, CYBREI achieves a dramatic weight reduction while maintaining exceptional torsional stiffness.

  • Compatiblity: Built around the widely adopted 28.99mm standard, this crankset ensures seamless compatibility with a wide range of frames.

  • Modern Fit Geometry: Available in a wide range of sizes, including ultra-short 155mm and 160mm options. Shorter cranks open up your hip angle, improve aerodynamics, and reduce knee strain—perfect for modern positions.

  • Featherweight Class: At just 270g (crank arms and spindle), this assembly rivals or beats the most expensive flagship cranksets on the market, giving you a competitive edge on the steepest gradients.
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GALLERY
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TECHNICAL SPECIFICATIONS
Component CYBREI Ultra Carbon Crank Assembly
Crank Weight 270g
Q-Factor 150mm
Spindle Specs 28.99mm (DUB Standard) Carbon Fiber Spindle
Available Lengths 155mm, 160mm, 165mm, 167.5mm, 170mm, 172.5mm (6 options)

Additional information

Crank Length

155mm, 160mm, 165mm, 167.5mm, 170mm, 172.5mm

Brand

Cybrei

Brand Name: Cybrei Chinese Company Name: 厦门市益百克运动器材有限公司
Founded: 2021 # of Employees: 5-10
Headquarters: Xiamen, Fujian Products Categories: Wheels, Cranks, Chainrings, Bottom Brackets, etc
CYBREI is a brand founded by riders and built with decades of experience from individuals deeply connected to the cycling industry. CYBREI views riding as more than a passion—it’s a way of life. As a high-end bicycle spare parts brand serving a global audience, CYBREI is dedicated to meticulous craftsmanship and creating cutting-edge products with top-tier performance. By working closely with professional cycling teams, CYBREI continuously optimizes and develops faster, better products to push the boundaries of performance.

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