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ROTOR 110×4 Oval Chainrings for Shimano

Josh Matthew March 23, 2023


ROTOR oval 110×4 rings for Shimano 12-speed cranksets!

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ROTOR 110×4 Oval Chainrings for Shimano

The all-new ROTOR 110×4 Oval Chainrings for Shimano are compatible with 110×4 road cranksets, including Shimano 12-speed 8100 and 9200. They also fit ROTOR modular cranks and power meters. This includes the 2INpower, INpower, INspider, ALHDU, and VEGAST cranksets.

Finished with a gloss black powder coat, the ROTOR oval chainrings for Shimano are machine CNC’d from aeronautic-grade 7055 aluminum which makes them lightweight, stiff and durable. The direct mount spider, required for use with the 2INpower, INpower and ROTOR cranks, features a spline interface that mounts directly to the axle. The spider also includes refined OCP Mount technology so you can adjust your oval chainring position in one-degree increments.


  • Crankset: With ALDHU Spider: Compatible with ROTOR’s 2INpower and INpower DM power meters as well as ALDHU and VEGAST cranksets
  • Crankset: Without ALDHU Spider: Compatible with most 110x4 cranks including both 11- and 12-speed Shimano road cranksets
  • Chain: Compatible with 9-, 10-, 11-speed groupsets. Also works with 12-speed Shimano and 13-speed ROTOR groupsets
  • Not compatible with SRAM AXS 12-speed groups


  • Color: Black anodized
  • BCD: 110x4 asymmetric
  • 100% CNC-machined, 7075 aluminum alloy
  • OCP Mount technology: Fine adjustment for OCP positions (when used with ALDHU Spider)

Common Questions and Answers

Question: What is the difference between this ROTOR 110×4 chainring and the ROTOR Direct Mount chainrings?

  • The ROTOR 110×4 Chainrings are traditional 2-piece rings and are compatible with both ROTOR cranksets as well as other (Shimano) 110x4 cranks. The ROTOR Direct Mount Rings on the other hand are a one-piece chainring design that saves weight while simultaneously increasing rigidity. However, they are only compatible with ROTOR’s 2INpower and INpower DM power meters as well as ROTOR ALDHU and VEGAST cranksets. Please see here for more detailed information.

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