Profile Design 52 ASC Aero Bars - Extensions 400 mm

Profile Design 52 ASC aero bars offer a wide range of significant benefits for serious cyclists, time trial specialists, and triathletes looking to optimize their performance on the road. These advanced extensions are specifically designed to deliver the ultimate balance between maximum aerodynamics, ergonomic comfort, and full control. With a distinct grip angle of 52 degrees, they ensure that the rider can maintain a natural and neutral wrist position, significantly reducing physical strain during long bike races. Furthermore, the front section is angled an additional 9 degrees upward to provide optimal and ergonomic support for the forearms and wrists. One of the most unique features of this product is its CFD-optimized shape, designed to shift the bars slightly sideways. This allows the bars to share frontal area with the rider's arms, increasing the contact surface and significantly smoothing airflow to minimize wind resistance. With a total length of 400 mm and a vertical rise of 137 mm, these bars offer incredible setup flexibility. This means you can tailor your riding position precisely to your personal preferences, whether you are riding short, aggressive time trials or participating in grueling long-distance triathlons like Ironman. These features help you save valuable watts and maintain speed over longer durations.

These high-performance 52 ASC carbon extensions are manufactured in an advanced and full carbon fiber construction, which Profile Design calls Aero Shaped Carbon. The choice of carbon fiber as the primary material ensures an unsurpassed combination of extremely low weight, maximum stiffness, and exceptional structural strength. For riders who are highly focused on weight savings and marginal gains on the bike, weight is a crucial factor. The 400 mm long version weighs just 228 grams per pair, which is extremely impressive for a component with such a large surface area and ergonomic support, while the shorter 340 mm version weighs 190 grams. The high stiffness of the material means that no unnecessary energy is lost when you pull on the handlebars during accelerations or in hilly terrain. In addition to the purely structural benefits, the carbon fiber material also has a natural ability to dampen vibrations and shocks from the road surface. This reduces accumulated fatigue in hands, wrists, and forearms, which is a huge advantage on rough asphalt or during intense training sessions. The material's formability has also made it possible for Profile Design to create the complex, streamlined aerodynamic profile that effectively cuts through the wind and minimizes air resistance, so you can ride significantly faster without exerting extra effort.

Yes, Profile Design extensions are fully compatible with both electronic and mechanical shifters, making them extremely versatile and future-proof. A particular advantage of this specific 52 ASC model is that the grip section itself has been extended by an additional 20 mm compared to the smaller 43 ASC model. This extra length is specifically developed to accommodate modern electronic shift buttons, such as SRAM Blips or similar shifting components, without compromising grip comfort. To ensure a perfect individual fit, these extensions can be shortened in length depending on the rider's needs, with a defined minimum length of 290 mm measured directly from the front edge of the clamp. The construction has a standardized outer diameter of 22,2 mm and an inner diameter of 18,8 mm, which means they fit perfectly on all common aerobars with a 22,2 mm clamp diameter. Furthermore, they are designed to integrate flawlessly with Profile Design's own mounting systems and can be advantageously paired with Race+ or Ergo+ armrest kits. This ensures a complete, integrated, and streamlined cockpit solution that makes it easy for both mechanics and riders to mount, adjust, and fine-tune the entire setup, regardless of the frame or bike type used.