absoluteBLACK Premium Oval 110 BCD Road Outer Chainring for Shimano Dura-Ace 9000 - 50t, 110 Shimano Asymmetric BCD,

absoluteBLACK Premium Oval 110 BCD Road Chainrings utilize absoluteBLACK's top-tier design features to greatly improve traction and speed. They are designed for Shimano 4-bolt cranks like Dura-Ace 9000, Ultegra 6800, 105 5800 and others. Optimized with smooth shifting in mind, premium chainrings have a 6-point ramp and recess design. Chainrings are crafted from CNC machined 7075 aluminum, and feature an anodized finish for exceptional durability. Outer rings feature 6-point shifting ramps that work in conjunction with the tooth recesses to stabilize the chain while shifting, and allow for easy and quick gear changes Outer chainrings also features 12 down-shifting points 10.3% ovality is ideal for road climbing Use absoluteBLACK long chainring bolts to install outer ring 120g Oval shape reduces stress on knees, helps to keep your legs fresh, and does not feel any different while riding Chainring design reduces the possibility of leg cramps, and allows you to maintain a better cadence wh