Using our AeroSystem Shaping Technology process, we took a holistic view of the bike as a complete system, analyzing countless combinations of frameset designs through CFD and wind-tunnel analysis. One of the key breakthroughs is a new truncated ellipse airfoil shape that delivers the best overall aero performance at various wind angles.
We also found that, with proper integration, a disc-brake design can actually improve aerodynamic performance. The final step was to refine the entire system at Aero Concept Engineering in Magny-Cours, France. We created a new integrated Contact SLR/SL Aero handlebar/stem unit with internal cable routing and an integrated Giant SLR WheelSystem with aero spokes.
The rear wheel has a taller 65mm rim depth, proven in wind-tunnel testing to produce minimal drag. The front wheel, which is more affected by crosswinds, features a shallower 42mm rim. This further boosts the bike’s aerodynamic performance by lessening the effect of crosswinds on the front wheel while also reducing overall drag. To accurately simulate real-world riding conditions, our team of aerodynamics experts created a dynamic mannequin. Other bike manufacturers use static mannequins, but only a dynamic one can accurately replicate the effects of a rider pedaling with various wind angles.