Rotor QXL Road Chainring 130BCDThe Dead Spot Eliminator Even the most experienced cyclists have "dead spots" in their pedal strokes, a portion of their pedal stroke in which significantly less power is being transmitted. Rotor has set out to eliminate this issue by engineering an ovalized chainring, designed specifically to smooth out your pedaling and fill in those dead spots-creating a significantly more balanced, optimized pedal stroke. This helps to generate more power and alleviate rider fatigue. The QXL chainring features 16% ovalization-the most in their Q Ring lineup-and has 5 Optimum Chainring Placement (OCP) points, to really dial things in. Rotor designed the QXL rings with steel shifting pins to improve shift quality, as well as a stiff aerodynamic design to further improve shifting and save even more watts. When seconds count, you can depend on The Rotor QXL chainring. Features16% ovalization more than any other Q-Ring Designed to optimize your pedal stroke by eliminating dead spots Aerodynamic design also increases shift performance and lateral stiffness5 Optimum Chainring Placement points allow you to fully customize chainring placement Designed and manufactured in Spain the headquarters of Rotor Bike components Steel shift points provide reliable shifting performance SPECIFICATIONSDrive Train Speed9, 10 & 11 speed groupsets Tooth Count41, 44, 53 or 54t options Bolt Center Diameter130 BCDMaterial CNC-machined 7075-T6 aluminum alloy Intended Use Road, Road Race, Triathlon Weight Approximately 176g per set (52/36t) | Rotor | Qxl Road Chainring, 130 Bcd 41 Tooth | Aluminum