absoluteBLACK Silver Series Oval 110 BCD Outer Chainring - 50t 110 Shimano Asymmetric BCD 4-Bolt Gray. absoluteBLACK Silver Series Oval 110 BCD Chainrings feature many of the same benefits as absoluteBLACKs Premium line but with less material machined out on the outer side allowing for easier maintenance and cleaning. They are designed for Shimano 4-bolt cranks such as Dura-Ace 9000 Ultegra 6800 105 5800 and others. Optimized with smooth shifting in mind these 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.

This chainring is designed for your winter/training bike where weight is not an issue but easiness of cleaning is

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 while climbing