You're probably not familiar with the name AmWing Technosport, but this company from Taiwan makes some of the fastest inline wheels on the planet. They have been developing their products for over 10 years in Asia and introduced them in the USA in 2007. These wheels are specially designed for racing on asphalt and RollerBob stocks the AmWing wheels in two models:
The yellow AmWing Track wheels have a standard 24mm profile and use the BD-19 urethane. These wheels offer a good mix of wear, grip and speed over a wide range of temperatures and track conditions. They will give a smooth ride to recreational and fitness skaters, even if the trail you're on is not in perfect condition.
The blue AmWing Pro wheel is a no-compromise race wheel that is unequaled in speed on a smooth, dry surface. The SP+ urethane has the lowest rolling resistance we've ever tested and the narrow 22mm profile lightens the wheel. If you're participating in a marathon and are looking for the fastest wheels made, these are the ones to use!