Absoluteblack believe that using oval chainrings bring significant efficiency advantages to cyclists. Oval chainrings do not produce more power, they allow you to unleash your true potential. They achieve this by optimising the pedalling torque you generate, reducing your effort on the climbs and increasing your speed at the same time - so you can be faster and more efficient. Naturally, we’re obsessed with making the finest oval chainrings in the world. We do this by spending countless hours refining the design and detail of each product. Then we use the best possible materials and high-tech, state-of-the-art CNC milling machines to produce oval chainring perfection. All Absoluteblack chainrings are compatible with 10 and 11 speed drivetrains.