Easton EC90 Aero 55 Tubular Road Wheel FrontEaston EC90 Aero 55 Tubular Road Wheel is the pinnacle of Easton's tubular road wheel technology. Using huge advancements in cycling science, the EC90 Aero 55 has achieved the title of most aerodynamic bicycle rim ever created. Couple this with the innovative new ECHO hub system, and you have an aero wheel that is tough, fast and light.768686935657