Rotor Q53At 39 Bcd130X5 Outer AeroFeatures Outer aero oval chainring designed for improved aerodynamics and performance. Optimized for power transfer during the pedal stroke. Compatible with 130x5 BCD cranksets. Aero profile reduces wind resistance, ideal for time trials and racing. Specifications Teeth: 53T BCD: 130x5 Position: Outer (Aero) Color: Black
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