Oval chainrings maximize the part of the stroke where power is produced and minimize resistance where it isn't.
As a direct consequence, oval rings enhance a cyclist's ability to spin with smoother power delivery and feel much easier on legs while climbing.
Oval chainrings let you achieve a higher average speed during the ride, reduce muscle fatigue, prevent cramps and reduce peak loads on your knees.

Also, compatible with custom cranksets.

Option 1: Chainring (black) ONLY (no crankset, no fasteners)
Option 2: Chainring (black) + left & right crank (black) + fasteners
Option 3: Chainring (black) + left & right crank (red) + fasteners

Material: CNC Aluminium AL7075-T6 BCD130 lightweight chainring.
Chainring weight: 180g