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Easton EA90 Cranks Arms Only - 170mm

Easton EA90 Cranks Arms Only - 170mm

Experience the versatility of the Easton CINCH system with the EA90 performance aluminum crankset....

Best current price£129.99from Leisure Lakes Bikes

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Product Information

Full details

The Easton EA90 Crank Arms are designed for dedicated gravel, cyclocross, and road cyclists who demand a highly versatile and durable drivetrain component. Utilizing the proprietary CINCH system, these crank arms provide riders with the ability to easily swap between 1x and 2x chainring configurations to suit changing terrain, though users should note that the arms are sold as a standalone component requiring a compatible Easton CINCH chainring or spider for assembly.

All features

Model Part NumberEACK20EA90129ARM170BLK
BrandEaston

Extended Product Information

FAQs

Are the chainrings included with these crank arms?

No, the Easton EA90 170mm product is for the crank arms only; chainrings and spiders must be purchased separately.

Can I use these on a 24mm bottom bracket?

No, the EA90 uses a 30mm spindle and requires a 30mm-specific bottom bracket.

Is this compatible with road and gravel frames?

Yes, the CINCH system is designed to be compatible across various road, gravel, and cyclocross frame standards.

What tools do I need for installation?

You will need a CINCH lockring tool for the chainring and a standard hex key set for the crank arm installation.

Can I add a power meter later?

Yes, the EA90 crankset is fully compatible with the Easton CINCH power meter spindle upgrade.

Troubleshooting

Creaking noise during pedaling

Remove crank arms, clean the spindle and splines, apply fresh waterproof grease, and reinstall to the recommended torque specification.

Chainring feels loose

Check the CINCH lockring tightness using a standard bottom bracket tool and ensure the chainring interface is clean and free of grit.

Pros and Cons

Pros

  • Highly versatile modular design
  • Lightweight yet rigid construction
  • Easy to swap chainring configurations
  • Compatible with existing CINCH ecosystem

Cons

  • Chainrings and spindle sold separately
  • Requires specific tools for installation
  • Not compatible with 24mm bottom bracket spindles

Setup, Compatibility & Care

To install the EA90 cranks, ensure you have the appropriate CINCH-compatible bottom bracket installed on your frame. The system uses a self-extracting bolt design, which simplifies both the installation and removal of the drive-side arm.

  • Compatibility: These arms require a 30mm diameter bottom bracket shell. Verify your frame standard before purchase.
  • Maintenance: Regularly inspect the spindle for debris and apply a light coating of waterproof grease to the splines during installation to prevent creaking.
  • Cleaning: Clean with mild soap and water. Avoid high-pressure washers, which can force water past bearing seals.

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