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QO ROCKS MTB Crankset

Eugene Cech December 19, 2025

Price range: $539.99 through $619.98

QO’s vibration-dampening carbon MTB crankset with kevlar impact resistance

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QO ROCKS MTB Crankset

The QO ROCKS MTB Crankset delivers race-ready stiffness and lightweight performance in a sleek carbon design built for serious trail riders. Developed in Madrid by the same folks who founded ROTOR, QO brings years of innovation and precision to every crankset they produce. Crafted from Mitsubishi Pyrofil carbon fiber, the ROCKS crankset offers exceptional power transfer and smooth vibration control on rough terrain. Reinforced with KevTex Kevlar fibers at the end of each crank arm, it resists rock strikes and trail impacts while staying incredibly light.

A 29 mm DUB spindle and direct mount chainring system simplify setup and maximize drivetrain efficiency. Available in 165 to 175 mm crank lengths, the QO ROCKS MTB Crankset is the perfect upgrade for riders who want a strong, efficient, and visually striking carbon mountain bike crankset built to perform on any trail.

 

Product Details

Key Features of the QO ROCKS MTB Crankset

  • Strategic Kevlar Fibers: KevTex at the ends of the crank arms improve durability against rock strikes while riding on loose terrain.
  • Exceptional Stiffness-to-Weight Ratio: Made to maximize power transfer while minimizing grams.
  • Wide Compatibility: The 29 mm (DUB) spindle and ROTOR-compatible direct mount interface let you use third party chainrings and power meter spiders with this crankset.
  • Vibration Dampening: Not only is this crankset lightweight and great at transferring power to the bike, the use of Mitsubishi Pyrofil carbon fiber helps reduce vibration transmitted to the rider which in turn reduces fatigue.

Compatibility

The QO ROCKS crankset is compatible with SRAM and Shimano 12-speed drivetrains and ROTOR-style direct mount chainrings. The crankset is compatible with 29 mm (DUB) bottom brackets and bikes which use SuperBoost spacing. See Compatibility tab for more information.

Considerations

This crankset delivers top performance with a strong focus on weight savings and durability. However, this makes it an expensive premium crankset, so it’s not in everyone’s budget. In addition, this crankset is only compatible with SuperBoost mountain bikes, which limits which bikes this can be used on.

Advice From Our Staff

The QO ROCKS MTB Crankset is a great choice for riders who want a lightweight yet durable setup. It’s made for mountain bikers who want to cut weight without needing to worry about a fragile crank arm. We like the Kevlar-reinforced design and built in vibration damping. Its wide compatibility makes pairing with power meter spiders simple. Whether you’re bouncing down singletrack or chasing XC podiums, the QO ROCKS crankset is a fantastic option.

 

Options

Crank Arms: You can buy this crankset in the following crank arm lengths:

  • 165 mm | 170 mm | 175 mm

Chainrings: You can complete this crankset with the following 1x chainrings:

  • 32T | 34T | 36T | 38T

Compatibility

Chainline: This crankset has a chainline of 55 mm, which means it is only compatible with Superboost mountain bikes. It is not compatible with Boost MTBs. Please contact us with any questions, we are happy to help!

Direct Mount Interface: These crank arms use ROTOR's 45-tooth DIN spline direct mount interface. This makes them compatible with QO and ROTOR chainrings as well as many third-party power meter spiders such as power2max, Sigeyi and ROTOR.

Chain: This crankset is compatible with 12-speed SRAM and Shimano chains.

Bottom Bracket: This crankset uses a 29 mm spindle and fits 29 mm/DUB bottom brackets.

Specs

  • Chainring Direct Mount Interface: ROTOR
  • Chainring Drivetrain Compatibility: Shimano 12-speed | SRAM 12-Speed
  • Crank Arm Material: Mitsubishi Pyrofil Carbon Fiber + KevTex Kevlar
  • Spindle Size: DUB - 29 mm
  • Chainline: 55 mm
  • Q-Factor: 174 mm
  • Weight: 444 grams (170 mm + 34T)

Tools Needed for Installation

You will need the following tools for installation of this product. You can shop for the required tools on our Tools Page.

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