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Rotor QX1 Chainring


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  • Black, 34t
  • Black, 32t
  • Black, 36t
  • Black, 30t

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QX1 Chainring

Oval chainrings aren't exactly popular, but you can see the appeal. Designed to prolong your "power zone" and reduce deadspots, rings like the Rotor QX1 might look a little strange, but they work. Rotor designed the QX1 to run with SRAM, Specialized, and Rotor one-by drivetrains, and gave it multiple mounting holes so you can adjust the orientation of the ring to suit your style. The thick-and-thin tooth profile locks the chain on to prevent drops, and the aluminum construction is lightweight but bomber, so you can ride it for years.

  • Aluminum
  • Slightly oval shape
  • Thick-thin tooth profile
  • Compatible with SRAM XX1 (adaptor required), Specialized, Rotor REX 1.1, 2.1
  • Item #RTR000K

Number of Rings
28 t, 30 t, 32 t, 34 t, 36 t
Compatible Components
SRAM XX1, [with adapter] Specialized, Rotor REX 1.1, 2.1
Claimed Weight
[28t] 50 g
Recommended Use
mountain biking
Manufacturer Warranty
1 year

Tech Specs

What do you think about this product?


>Rating: 5


I've put it through the wringer

I'm loving the QX1 chainring paired with my SRAM XX1. Chain retention and durability has been flawless, yet I'm eeking out a few extra watts by virtue of its elliptical shape. I've just proactively replaced my chainring after 3k miles. And no, you won't notice the elliptical shape after a couple rides!

>Rating: 4

Excellent performance, so so fit

I've put it through the wringer

Running a 32T QX1 on Giant Trance Advanced SX. Ring works really well for my pedal stroke. I tend to lose power coming to the top of the pedal stroke and this seems to smooth it out. It just feels better everywhere and I can hold onto the gear longer before I have to downshift. My only issue is that the spider you have to replace on the SRAM X01 (GXP) crank moved the chain line out another 6mm over stock! This made for a noisy 3 low gears and a nasty looking chain line in those gears. I ended up swapping the ring to the inside of the spider to bring the chain line back to stock. Works, but when you buy a premium product at a premium price, I expect it to fit perfect out of the box!

Rotor are releasing a GXP specific spider, if you use the BB30 one then the chainline wont be ideal.


I have a 2015 Niner Jet9 RDO with the PF30 BB, SRAM 4 bolt XX1 cranks with the 76BCD spider. Can I just get the ring? Do I need a special bolt for offset/chainline?


do I need to buy the spider for a qx1 ring in order to mount it on a xx1 crank? they are both 76mm bcd.

Yes you will need the Rotor QX1 Spider to run on the Rotor REX 1.1 Cranks


Good day, I noticed on the Rotor site that you are a dealer for them. I am looking for the new single Rotor ring that will fit on the bolt pattern of my 2014 Epic (Specialized S-Works Epic Carbon 29 World Cup 2014) with the stock Specialized crank it came with. Do you know if this ring is available? Thanks!


When will the rotor spider for the sram OX GXP cranks be available?

The QX1 GXP spider for SRAM cranks is now available. Only one site has them currently but that should change in the next few weeks/months.


What is the BCD for these rings? 104? I...

What is the BCD for these rings? 104? I have a SRAM Stylo that I am currently running a 30t 104BCD narrow wide ring on, so would these fit?

It says 76 BCD on the side of the chainring in the picture. That is the BCD used on XX1 cranksets.


Is this bash guard compatible? If, so is...

Is this bash guard compatible? If, so is it only with specific guards?