Castelli Sale—Save 25% or More on the Latest Apparel »

Item # RTR000W

Select options
  • Select options
  • Black, 54T/110BCD ($175.00)
  • Black, 53T/110BCD ($175.00)
  • 100% Guaranteed Returns
  • Free Shipping on orders over $50

Item # RTR000W

Qrank it up.

Take a close look at some of the pro road machines out there these days: Wiggins' Pinarello Dogma, Van Lierde's Cervelo, Vos' Giant. What do they all have in common? Aside from being piloted by world-podium-topping athletes, these bikes are each equipped with oblong chainrings from Rotor. Why? The ovalized shape of rings like the Rotor Outer Aero Q-Rings lends more leverage to the pedal stroke, extracting more power from your legs and more efficiency at the same time from each rotation. The effect felt on the bike is a smoothing of the pedal stroke, less exertion to achieve the same speed and power output, and a reduction in that "dead spot" you feel during each stroke.

The particular chainrings you see here are outer road chainrings. Both 50- and 52-tooth models are available in a 110BCD for Shimano and SRAM drivetrains, while the 53-tooth version available has a 135BCD and is compatible with Campagnolo drivetrains only. They are compatible for use with 10- or 11-speed systems. For best performance, Rotor recommends running Outer Q-Rings in tandem with Inner Q-Rings. For maximum benefit of the Q-Ring design, install the chainring so that the long axis of the ring aligns with the crankarm.

  • Oblong shape
  • 50-, 52-, or 53-tooth
  • 10- or 11-speed drivetrains

Tech Specs

CNC aluminum
50 52 53 t
Bolt Circle Diameter:
[50, 52] 110, [53] 135
Compatible Components:
[50, 52] SRAM and Shimano drivetrains, [53] Campagnolo drivetrains
Recommended Use:
road cycling

Reviews & Community


Write a review

    Add a:
  • Photos
  • Videos

No file chosen

Rather attach a photo from your computer?


Only jpg, jpeg, png, gif or bmp files please.

Submit ReviewCancel

I like the feeling!

  • Familiarity: I've used it several times

I don't own a power meter so I can only speak on how it feels. My first impression was that I could move a bigger gear at the same effort, also my cadence was improved on a flat terrain. Haven't try it on a big climb yet.

This thing is magical!

  • Familiarity: I've put it through the wringer

I don't understand all the engineering behind this-I just know it has improved my biking. Installed on my Cervelo R3 which came with the Rotor 3D crank setup. Cadence is improved over standard round ring. My acceleration in sprints is improved. All my cycling buddies keep asking me what I am doing to get the recent improvements-the only change has been this chain ring. Only downside is after installing (which only takes a few minutes) I worked for days to get the best compromise setup of the front derailleur. Still, I'm a believer...

This thing is magical!

I have a Cervelo S3 with the stock Rotor crank. First, will this outer ring work with the stock 3D cranks? And second, do I need the inner Q ring to avoid compatibility issues, or can I stick with the standard circle inner?

Rotor has a crank compatibility list online - I am pretty sure the 3D cranks will work just fine. You don't have to have both rings, but you will need to adjust the FD in any case. If you're going to do just one, it's easier to set up with just the inner ring as a q ring. I found that I needed some of the shims they sell separately to move the derailleur back and tilt it back to get enough clearance vertically as well.

Spinning eggs for your leggzzz :)

  • Familiarity: I've put it through the wringer

Rotor chain rings are the cheapest (yes, vs. a pair of carbon rims) and best way to not only increase your speed by about 1 - 1.5 mph with the same effort, but additionally less fatigue over long rides. Yes, they look weird and wobbly when you ride them - but the crazy thing is, it is actually a smoother rotation when riding - doesn't make sense to me still; but really :) Front derailleur set-up is a wee more difficult than the average garage wrench head - but not too bad. I'm using a SRAM Red 22 front derailleur, and the shifts are dead on - ramps are great, no hassles at all. Easy install onto most standard or compact spiders 110 - 130mm. I chose the Aero rings (solid outer ring vs. traditional chainring) it;s about 2 grams heavier than the standard ring, but I'll take that small penalty for the extra rigid performance.

Best performance and body upgrade you can get for the $$!

I have talked to many a friends in my group - and almost my entire mini-team rides Rotors now and will never go back to a traditional chaining set-up. Also a side note - Both Competitive and Rotor customer service is A+ !

Spinning eggs for your leggzzz :)