The stunning x glide r chainrings are optimized for use with the yaw technology in the front derailleur delivering seamless flawless performance x glider chainrings the chainrings are designed for an optimized shifting performance with the yaw front derailleur the stiffer rings 5mm 7075 t6 aluminum cnc machined feature upshift rivets with an advanced design adopted from sram xx cnc machining allows for precision control of each tooth shape ramp and nearly every shifting feature of the