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RotorAero Round Outer Ring


Item # RTR1WUB

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  • Black, 52T/110BCD, 4-Bolt ($110.00)
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Item # RTR1WUB

Why We Like The Aero Round Outer Ring

Saving watts is just the beginning with the Rotor Aero Round Outer Ring. Built for 110 BCD Rotor 4-bolt crank the aero outer ring is engineered to be incredibly stiff and offer an aero advantage over traditional designs. The ring uses cut-outs and a ramped shape in the aluminum to redirect airflow in a smooth pattern.

  • Aerodynamic chainring for Rotor cranks
  • Aluminum material is strong without a weight penalty
  • 110 BDC 4-bolt can fit more than just rotor cranks
  • Popular choice on track and time trial specific bikes

Tech Specs
Number of Rings1
Teeth[outer] 46t, 50t, 52t, 53t, 54t, 55t, 56t, 58t
Bolt Circle Diameter110
Connection4 bolt
Manufacturer Warranty2 years
Activitycyclocross, gravel, road cycling, time trial

Actual Weight

Black, 52T/110BCD, 4-Bolt

Claimed Weight

Claimed weights are provided by the vendor.

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Actual weights are measured in-house by the Competitive Cyclist team.

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What do you think about this product?



Can this chainring be used with a shimano inner shainring? Thank you


Will this work on the Shimano GRX810 1x set up to directly replace the existing 40T chainring?