The ROTOR Q-Rings Aero outer chainring with 56 teeth was developed for performance road and time trial drivetrains. Its oval shape changes the effective gear ratio throughout the crank rotation. The closed Aero design complements the chainring with a broad profile, commonly used on time trial and triathlon bikes.

This version is intended as an outer chainring for a 56/44-tooth combination. The CNC-machined aluminum chainring has a 4-arm mounting with BCD 110x4 mm. For installation, the crank mounting shape, compatible inner chainring, and drivetrain must be matched.

Top features at a glance:

• 56 teeth as outer chainring: Intended for 2x drivetrains with a 56/44-tooth chainring combination.
• Oval Q-Rings shape: Varying effective gear ratio throughout the crank rotation.
• Aero design: Closed profile made of CNC-machined aluminum with BCD-110x4 mounting.

Technical specifications:

• Manufacturer: ROTOR
• Model: Q-Rings Aero
• Product type: Outer chainring
• Intended use: Road cycling / road / triathlon / time trial
• Drivetrain: 2x
• Shifting speeds: 2x11-speed
• Number of teeth: 56 teeth
• Intended chainring combination: 56/44 teeth
• Bolt circle / mounting: BCD 110x4 mm (4-arm)
• Chainring shape: Oval
• Version: Aero
• Position: Outer
• Material: 7075 aluminum
• Manufacturing: CNC-machined
• Color: Black

Compatible with:

• Suitable ROTOR road bike cranks or spiders with a compatible BCD-110x4-mm mounting
• Correspondingly matched 2x11-speed road bike drivetrains
• Compatible 44-tooth inner chainrings for the 56/44 combination

Please check the exact mounting geometry before purchase. The same bolt circle diameter alone does not guarantee compatibility with every 4-arm crank.

Scope of delivery:

• 1 × ROTOR Q-Rings Aero outer chainring, oval, 56 teeth, black
• Inner chainring, crank, and mounting bolts are not included.
• Packaging: Original packaging

Manufacturer part number: C01-041-05020-0 | EAN: 8434366018195

For building a compatible oval 56/44-tooth chainring combination.