RaceFace Narrow Wide Oval Chainring: Direct Mount CINCH, 34t, BlackCinch Oval rings help you put down the watts in the best part of our pedal stroke, on your 10, 11 or 12 speed drivetrains. Ovals provide enhanced traction control when compared to conventional round rings, particularly in high torque, low cadence riding scenarios. We've got your timing clocked to improve on that grueling climb. Or simply make your personal pedal shuttle a little more bearable. And by simply flipping the ring, it becomes Super Boost