Subcategories

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  Shimano 11/12-speed...

  Shimano Ultegra R-8100 crankset with Rotor 53/39 chainrings Shimano road · 11 & 12-speed

  Keep your Shimano crank arms, change the chainrings

  On compatible 105, Ultegra and Dura-Ace cranksets, Rotor offers the widest gearing choice and Q-Rings, while Alugear brings CNC-machined kits and strong aero solutions for recent Shimano generations.

  Rotor

  Range & Q-Rings

  Round or oval, conventional or large gearing, open and aero options depending on the exact setup.

  Alugear

  CNC & aero

  Shimano 12-speed kits, alternative gearing, aero covers and solutions for several crank generations.

  Explore Alugear Check the crank reference FC-R7100 FC-R8100 FC-R9200 -P versions need extra checks
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  Sram AXS

  FAQ: Rotor Chainrings Compatible with SRAM

  1. Are these Rotor chainrings compatible with all SRAM drivetrains?

  Yes, the Rotor chainrings presented here are compatible with SRAM AXS 12-speed drivetrains. They are available in two main configurations:

  • BCD 107 mm: for stars specific to SRAM groups.
  • BCD 110 mm: for Rotor stars or compatible systems.

  2. What are the benefits of Rotor chainrings for SRAM AXS drivetrains?

  • Perfect compatibility with 12-speed groups.
  • Available in oval (Q-Rings) and round versions to suit cyclist preferences.
  • Made of CNC-machined aluminum, ensuring an excellent stiffness-to-weight ratio.
  • Customizable tooth sizes for optimal performance based on your riding style.

  3. Are Q-Rings compatible with SRAM AXS derailleurs?

  Yes, Q-Rings (Rotor oval chainrings) are fully compatible with SRAM AXS derailleurs. They work perfectly with SRAM electronic systems and offer smoother pedaling by reducing dead spots.

  4. What chainring sizes are available?

  • For double chainring Rotor cranks (BCD 110): 48/35, 50/37 in round or oval options.
  • For double chainring SRAM cranks (BCD 107): 48/35 and 50/37 in oval only.

  6. Do these chainrings require specific adapters?

  BCD 107: The chainrings mount directly onto SRAM stars.
  BCD 110: These chainrings require a specific Rotor star if your current system does not include a compatible star.

  7. How do I install a Rotor chainring on a SRAM drivetrain?

  For SRAM stars (107 mm):

  1. Remove the old chainring by unscrewing the fixing bolts.
  2. Install the new Rotor chainring, ensuring proper tooth alignment for optimal shifting.
  3. Tighten the bolts to the recommended torque (usually 5-6 Nm).
  4. Test gear shifting and adjust if necessary.

  For Rotor stars (110 mm):

  1. Remove the old chainring by unscrewing the fixing bolts.
  2. Install the new Rotor chainring, ensuring proper alignment: the anti-drop pin must be positioned behind the crank arm.
  3. Tighten the bolts to the recommended torque (7-8 Nm).
  4. Test gear shifting and adjust if necessary.

  8. Are Rotor chainrings durable?

  Yes, Rotor chainrings are designed to last. Made from high-quality 7075 aluminum, they resist wear and maintain their performance even after thousands of kilometers.

  Tips for maximizing their lifespan:

  • Regularly lubricate with high-quality products.
  • Keep the chain and chainrings clean.
  • Replace the chain before it becomes overly worn.

  9. How do I choose between a round chainring and an oval Q-Ring?

  • Round chainring: Ideal for cyclists who prefer a traditional pedaling style.
  • Oval Q-Ring: Recommended to improve pedaling smoothness, reduce dead spots, and enhance efficiency on long rides or climbs.

  10. Can I use these chainrings with a Shimano chain?

  No, Rotor chainrings designed for SRAM AXS are specifically optimized for SRAM 12-speed chains. For Shimano compatibility, specific Rotor chainrings are required.

  11. What tools are needed to install these chainrings?

  • An Allen key (typically 4 or 5 mm) to remove and install the bolts.
  • A torque wrench to ensure proper tightening.

  12. What is the maximum tooth size for Rotor chainrings compatible with SRAM AXS?

  The maximum size offered is 50/37, as most SRAM AXS groups are designed for a maximum of 50 teeth.

  However, with SRAM releasing in 2024 its Red AXS groups for chainrings of 54 teeth or more, keep an eye on new Rotor arrivals on velo-perso.com. You might soon find larger Rotor chainrings for your SRAM AXS drivetrain.

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  Shimano GRX 11S

  Double chainrings for Shimano GRX groupsets. 110/80mm BCD

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  Shimano Rotor 4 hole...

  Rotor 4 hole chainrings with a 110mm BCD are the most popular chainrings. They are available in many variations.

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  5 arm chainrings

  Rotor 5 arm 110mm BCD chainrings are the reference of the early 2010's. We keep available a little amount of these chainrings. Most of the time they have been replaced by the 4 hole standard

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  Standard 130

  Rotor 5 arm chainrings with 130mm BCD. This standard was popular in the 2000's. Then it was replaced by 5 arm 110 BCD. We have a little inventory of these 130mm chainrings in order to use vintage cranksets with this standard.

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  Campagnolo

  Rotor 113mm and 135mm chainrings to assemble on Campy cranks of the 2000's and early 2010's. Most of sizes are discontinued.

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  NoQ (round)

  This category includes all our Rotor round chainrings. It's another way for you to sort chainrings and find the round chainrings that you need for your crankset.

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  Qrings/Ovalized

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  Spidering...

  Single or double directmount chainrings. Spidering is one piece of aluminum that combines spider and 1 or 2 chainrings. They are supposed to simplify the drivetrain and to add extra choice of setups: micro compact double chainrings, very small single chainrings for MTB/Gravel...

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  1x chainrings

  1x · Road · Gravel · TT · MTB

  Choose the interface before the tooth count

  A 1x chainring must be selected together with the crank interface, cassette and terrain. Rotor brings Universal Tooth, Q-Rings and Direct Mount options; Alugear adds Shimano, GRX, 110x5 and large aero gearing.

  Rotor

  Universal Tooth

  Direct Mount or spider-mounted depending on model, round or Q-Rings, with a broad range of tooth counts.

  Alugear

  Shimano & GRX

  CNC 1x chainrings for Shimano 110x4, GRX, 110x5 and large road / TT gearing depending on model.

  Explore Alugear Simple rule smaller ring = easier climbing larger ring = speed / TT always consider the cassette

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  Track/Fixie

  Find here the perfect chainrings for your track or fixie bike. You'll enjoy the great stiffness of these 144mm BCD chainrings made in Spain by Rotor. Select the size of chainring that you need for your track discipline. They are compatible with the Rotor track spider called track30.