Sustaining maximum output defines your primary race goal; go too hard on the bike and suffer on the run, but go too easy and forfeit the podium. By distributing the work more efficiently between muscle groups, our wind-shucking QXL110BCD aero oval chainrings for your compact cranks enable you to go farther and faster with less fatigue. QXL´s have been designed to orient the chainring around your unique pedaling characteristics, and feature 16% ovality for a more pronounced power output. Choose from 5 Optimum Chainring Positions (OCP) that can be adjusted to take advantage of the strongest point of pedal stroke.