Sram AXS

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.