absoluteBLACK's premium cyclocross 110/4 (bolt pattern) oval chainrings are designed for new Shimano cranks like Dura-Ace 9000, Ultegra 6800, Shimano 5800 and others. Ideal for 1X conversion of your road crank. Narrow-wide chainring.
Ovality: 38T-11.4%; Timing of 110.5° after TDC (top dead center).
Why our oval chainrings work? absoluteBLACK's premium Oval chainrings work because a rider does not produce power evenly through a pedal stroke; they maximize the part of the stroke where power is produced and minimize resistance where it isn't. Oval rings make the spin cycle a lot smoother and are easier on legs while climbing. Believe it (or not), but a round chainring doesn't transfer torque to your rear wheel as smoothly as an Oval one. You will actually feel your stroke to be more "round" with an Oval shape than with a round chainring.
Its specially designed narrow-wide tooth profile keeps the chain really snug, allowing you to leave your chainkeeper in the garage. If you like to mount one, chose a 2 teeth bigger size than the chainring.