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Shimano Premium Oval Road Ring

2 out of 5 stars
2 Reviews
$63.95 - $139.95



Shimano Premium Oval Road Ring

The goal with oval chainrings is to maximize efficiency at the part of the pedal stroke where power is produced, while minimizing resistance at the less powerful part of the stroke. As an industry leader in oval chainrings, Absolute Black claims their Shimano Premium Oval Road Ring has the potential to enhance a cyclist’s spinning ability with a smoother power delivery, an easier feel on the legs while climbing, and less energy used over time at the same power output. Most of us aren't pro cyclists, and simply can't spend the majority of our day on the bike perfecting our spin. Switching to oval chainrings can help to correct an imperfect pedaling action, providing the smooth power delivery the pros developed through thousands of hours of training.

Not all oval chainrings are created equal. Timing and shape are the most crucial part of oval chainring design, and Absolute Black spent three years in development to perfect these elements. While most other brands retain the same timing (position of the crank arm relative to the oval), and shape of the oval across all their chainring sizes, Absolute Black optimizes timing and shape for each different chainring size, resulting in the best possible ride experience. Absolute Black recommends trying an oval inner ring to start, to see how it helps your climbing performance. If you use the outer ring quite often on less demanding climbs, you'll likely want to switch your outer ring to an oval as well.


  • Premium oval chainrings for Shimano road cranksets
  • Enjoy smoother power delivery and better efficiency
  • Climb easier and faster with less stress on the knees
  • 6-point ramp & recess design helps reduce oval shifting problems
  • Excellent strength to weight ratio, high level of stiffness
  • Timing and shape optimized for smoothest possible pedal stroke
  • Ramp design shifts best with combinations: 50/34, 52/36, 52/38, 53/39t
  • Outer ring requires "Road Bolt Covers" or "Long Bolts" (sold separately)
  • Item #ABC000D
CNC-machined 7075 aluminum, anodized
[inner ring] 34, 36, 38, 39t, [outer ring] 50, 52, 53t
Bolt Circle Diameter
Shimano asymmetric 110mm
Compatible Components
Shimano Dura-Ace 9100, Dura Ace 9000, Ultegra R8000, Ultegra 6800, 105 R7000 cranksets
Claimed Weight
[34t] 1.1oz (31g), [36t] 1.3oz (37g), [38t] 1.4oz (41g), [39t] 1.5oz (42g), [50t] 4.2oz (120g), [52t] 11.3oz (37g), [53t] 4.9oz (139g)
Manufacturer Warranty

Overall Rating

2 based on 2 ratings

Review Summary

1 Stars - 1 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 0 reviews
5 Stars - 0 reviews

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1 out of 5 stars

July 12, 2023


I've put it through the wringer

Purchased in 2021. Torqued to spec. Checked on bolts in 2022, still torqued to spec. Road infrequently due to injury. Bent chainring severely mid-ride. Bolts ejected themselves. Frame damaged from chainrings.

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Ian M

Originally reviewed on

3 out of 5 stars

November 13, 2020

Does not match the description

I returned this product before using it

The description states that the chainring should have 6-point ramp, however, 50t ring I received only has 4 upshifting ramps (see a picture of the back). According to Absolute Black support, only bigger rings like 53t have 6 ramps.

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Alex B