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Easton EA90 SL Direct Mount Chainring
40T - Flattop
42T - Flattop
44T - Flattop

EA90 SL Direct Mount Chainring - Flattop

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Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Enjoy Every Ride With The EA90 Aluminum Chainring

Whether you prefer long stretches of the open road or are more of a rough gravel type, your bike could use an upgrade. The Easton EA90 SL Direct Mount Chainring - Flattop uses a narrow/wide design that is specifically tailored to cyclists who like to ride hard and enjoy every minute of it.

A construction of EA90 SL Alloy provides all the durability you need to make switching gears a breeze. The individual tooth profile has moved from the traditional symmetrical shape to a more directional specific design. This delivers a positive chain roller engagement which helps with chain retention, as that is critical to preventing the chain from slipping or bouncing while conquering rough terrain.

The Easton EA90 SL Direct Mount Chainring is specifically tailored to road, gravel, and cx applications. This one-of-a-kind ring is optimized for Flattop 12 Speed chains, though it is also compatible with 11-speed chains as well. Take on the next adventure with a sturdy chainring that's got your back — no matter what.


  • EA90 SL Alloy
  • Cinch System Compatible
  • Variable Tooth Width
  • Optimized Retention via Directional Tooth Design
  • Optimized for 12 speed flattop chains

  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    36T - Flattop

    Mfg PartNum: RR21DM36TFLT12BLK 

    38T - Flattop

    Mfg PartNum: RR21DM38TFLT12BLK 

    40T - Flattop

    Mfg PartNum: RR21DM40TFLT12BLK 

    42T - Flattop

    Mfg PartNum: RR21DM42TFLT12BLK 

    44T - Flattop

    Mfg PartNum: RR21DM44TFLT12BLK