Start using oval chainrings with the AbsoluteBLACK Winter Line Oval 110*4 chainring. It has the optimal price/quality ratio. This simple but pretty oval chainring is made for the Dura Ace 9000, Ultegra 6800, and 105 5800 cranksets. These cranksets have a 110 BCD and 4 bolts.
The ovality makes climbing easier and pedaling smoother which postpones muscle cramps and fatigue. The special construction is also very stiff. The Winter Line Oval chainrings are 15% more stiff than other oval chainrings. With its milled “Shifting ramps” it is one of the best shifting oval chainrings.