ROTOR QX2 Inner Chainring 60mm Black

New Rotor QX2 Inner chainrings, with a ovality 10% pay optimizer pedaling ! A precise machining aluminum Who Brings not exceptional efficiency throughout the pedaling. 3 optimum chainring position (OCP). Features u201cPowerfulu201d riders with larger muscle mass that produce a higher peak and average power output typically prefer QXL rings. For example, sprinters tend to have predominantly fast twitch muscle build. This makes an increased degree of optimal ovality because these riders benefit from the decreased negative work offered by the enlarged ovality. Q-Rings can increase an avid cyclistu2019s performance by as much as 4 seconds per km in a sprint u2013 thatu2019s twice the benefit of an aero wheelset!Professionally, athletes who have chosen to ride them have put to rest any doubts about their performance by winning two grand tours, more than 25 Ironman races and over 20 UCI elite Road, MTB and CX world champion titles. Weight : 95g 38/26 Material : 100% aluminium alloy 7075-T6, CNC. Black color 3 points OCP (2-3-4) Compatible 9, 10, 11 speeds BCD 60mm Not compatible Shimano 4 chainrings