Silverstone has long been associated with speed, precision, and performance engineering. At the Silverstone Sports Engineering Hub in the United Kingdom, cycling equipment can be evaluated in a controlled environment designed to measure aerodynamic performance with consistency and accuracy.
That's why we brought the A70 PRO to Silverstone.
When we designed the A70 PRO, our goal wasn't to chase the fastest result in a single test condition. It was to make professional-level aerodynamic performance more accessible, so more riders could experience the efficiency, confidence, and protection typically associated with high-end racing equipment.
REAL-WORLD RIDING MEANS REAL-WORLD WIND
When most riders think about aerodynamic testing, they imagine wind hitting a cyclist directly from the front. In reality, airflow on the road is far more complex, influenced by crosswinds, terrain, rider position, and speed.
To better reflect these real-world conditions, the A70 PRO was tested at both 35 km/h and 45 km/h across multiple yaw angles, including 0°, 5°, 10°, and 15°. The helmet was also evaluated alongside several established aero road helmets using the same test protocol.
The goal was simple: to understand how the A70 PRO performs in the conditions riders actually experience on the road.
WHAT THE DATA REVEALED
So how did it perform? The data below tells the story.
Aerodynamic performance is commonly measured by CdA. For most riders, the takeaway is simple:
Lower CdA = Less Drag = Less Power Required
In our testing, the A70 PRO required approximately 3.8 fewer watts than the Kask Utopia Y to maintain the same speed under the 35 km/h, 15° yaw test condition.
A few watts may sound small, but over longer rides, sustained efforts, or fast group rides, marginal gains add up. Less power spent fighting the wind means more energy available for the ride ahead.
The results showed that the A70 PRO performed competitively across a wide range of test conditions. At both 35 km/h and 45 km/h, its CdA values remained comparable to those of several leading aero road helmets. In some yaw angles, especially higher-angle crosswind scenarios, the A70 PRO matched or exceeded selected comparison models.
Rather than relying on one standout number, the A70 PRO demonstrated consistent aerodynamic efficiency across the full range of conditions tested. For riders, that consistency matters. Real-world performance is not defined by a perfect lab moment, but by how well a helmet performs as the wind changes on the road.
PROVEN IN TESTING. TRUSTED IN RACING.
The A70 PRO was engineered for aerodynamic efficiency, competitive performance, and all-day comfort—bringing race-proven technology to more riders.
Beyond the wind tunnel, the A70 PRO has also proven itself in competition. In 2025, it was ridden to victory at the Chinese National Road Cycling Championships. Together with independent safety certification and wind tunnel validation, these results reinforce a simple idea: high-performance cycling equipment doesn't have to come with a premium price tag.
PROFESSIONAL PERFORMANCE. MADE ACCESSIBLE.
Wind tunnel testing at the Silverstone Sports Engineering Hub showed that the A70 PRO delivers competitive aerodynamic performance across realistic riding conditions. On the road and in competition, it has demonstrated that performance, protection, and value can coexist in one helmet.
With Mips® protection, a Virginia Tech 4-Star rating, and a retail price of just $99 USD, the A70 PRO offers a compelling balance of aerodynamics, safety, and accessibility.
Tested at Silverstone. Proven on the road. Built so more riders can experience professional-level performance.