Last month, Frameworks Racing took a deep dive into downhill bike aerodynamics with a full day of wind tunnel testing. Asa Vermette saddled up for a series of controlled runs to evaluate how body position, gear choices, and subtle bike modifications affect drag at speeds up to 85 mph. Downhill mountain biking is one of the few time trial sports that hasn’t traditionally prioritized aero gains—but with margins tighter than ever at the World Cup level, we’re looking to change that.
Throughout the session, Asa experimented with different riding positions, including various tuck styles and elbow placements, to find the most repeatable and efficient stance on the bike. He also tested aerodynamic gear options like a Fox speed suit and even explored unconventional ideas like silicone timing chip covers. The results were visually striking, especially when comparing flapping race kits to tighter, more streamlined options. While the changes might seem minor, every fraction of a second counts when racing at World Cup speed.
Ultimately, the wind tunnel gave us valuable data we can apply directly to race-day performance. For Asa, it was a hands-on way to feel the effects of drag and understand how small changes can lead to real gains. As Frameworks Racing continues to evolve, we’re committed to using every tool available to build faster downhill bikes and smarter riders—because in mountain bike racing, even the smallest edge can make the biggest difference.