The ROTOR Qarbon Q-Ring 53A (110x4 BCD) is a high-performance oval outer chainring designed specifically for Shimano 4-bolt road cranksets. It combines CNC-machined 7075-T6 aluminum with a bonded 3K carbon fiber reinforcement to deliver reduced weight and 20% greater lateral stiffness compared to standard alloy rings. The 12.5% ovality helps optimize pedaling efficiency by minimizing dead spots and improving power transfer throughout the pedal stroke.

• Tooth count: 53T

• BCD: 110 mm, 4-bolt (Shimano-compatible)

• Material: 7075-T6 aluminum with carbon fiber reinforcement

• Ovality: 12.5%

• Optimized for power transfer and reduced pedal dead zones

• Compatible with 9, 10, 11, and 12-speed drivetrains

• Fixed to Optimum Chainring Position (OCP) 3 on Shimano cranks

• Includes shifting ramps and pins for reliable gear transitions

• Approximate weight: 129–133 grams

• Made in Spain