Prime rr 50 carbon tubular road wheelsetthe prime rr 50 carbon tubular wheelset is all about straight line speed and transfer of power from pedals to the rear wheel for maximum acceleration ideal for crit racing time trials and rolling terrain where speed and reduced aerodynamic drag are the key factors in performance gainsour 50mm deep aero rim profile offers increased speed for less physical input by increasing the aerodynamic benefits across a wide range of yaw angles additional benefits