Balance between low frontal drag and crosswind stability using a 45mm deep naca rim profile creates low drag in any weather condition combine this with the 25mm external rim width which integrates perfectly with the 25mm tyre mavic have created a wheelset that gives you low drag and easy crosswind steering just to polish them off mavic have enhanced the aerodynamics using their patented elliptical spokes perfect efficiency and low weight to create a low rolling resistance low friction and fa