Rotor's oval rings are probably most widely known on the smooth pavement side of things but the company is expanding its offerings for trail riders now too with oval options like its SRAM GXP Direct Mount Q-Ring. If you're bothered by dead spots and hoping to squeeze some extra efficiency out of your pedal stroke this may just be the chainring you're looking for. Its ovalized shape seeks to address pedaling efficiency issues for smoother pedals turns and even power that in theory will get you to the top of the climb with a bit more energy in the tank to enjoy the descent on the other side.