The Q-Rings Aero is an oval road chainring for sporty 1x or 2x drivetrains. With 55 teeth (55T) as the outer chainring and a 4-arm interface (BCD 110x4 mm), this version is designed for the described ROTOR drivetrain.

The oval Q-Rings geometry changes the effective gear ratio throughout the crank rotation. It is designed for riders who want to consciously adapt their pedal stroke to the ROTOR oval concept.

Key features at a glance:

• Oval aero chainring designed for the power phases of the pedal stroke
• 55 teeth for sporty 55/42 and 55/44 gear ratios
• CNC-machined 7075-T6 aluminum with BCD 110x4 mm

Technical specifications:

• Manufacturer: ROTOR
• Model: Q-Rings Aero
• Product type: Oval outer chainring
• Intended use: Road cycling / road / triathlon / time trial
• Drivetrain: 2x
• Speeds: 2x11-speed
• Tooth count: 55 teeth (55T)
• Compatible chainring combinations: 55/42 or 55/44 teeth
• Bolt circle: BCD 110 mm
• Mounting: 4-arm interface (BCD 110x4 mm)
• Chainring shape: Oval
• Design: Aero
• Position: Outer
• Material: 7075-T6 aluminum
• Manufacturing: CNC-machined
• Color: Black

Compatible with:

• ROTOR road bike cranks with a compatible 110x4 mm BCD interface
• Compatible ROTOR 110x4 spiders
• Shimano Dura-Ace R9100 and Ultegra R8000 crank interfaces, as well as compatible previous-generation models
• Compatible 2x11-speed road bike drivetrains
• Suitable 42- or 44-tooth inner chainrings for 55/42 or 55/44 combinations

Scope of delivery:

• 1x ROTOR Q-Rings Aero oval outer chainring, 55 teeth, black
• Packaging: In original packaging

Manufacturer part number: C01-041-06020-0 | EAN: 8434366018201

For a road drivetrain where the tooth count, mounting interface, and chainring combination are precisely matched.