The Profile Design 43 ASC Carbon Extensions are designed to combine aerodynamic performance, comfort and support into a highly refined extension system. Built using Aero Shaped Carbon technology, the shaped profile takes advantage of carbon’s ability to create complex forms that improve airflow while maintaining excellent strength and stiffness.
Featuring a 43° grip angle and an 87 mm rise, the 43 ASC is designed to place the wrists in a more neutral position, helping riders relax into a comfortable and sustainable aero posture. A relaxed upper body often leads to improved comfort, reduced tension and a position that can be maintained more effectively over long distances.
The wrist and forearm area has been shaped to increase support and contact area, improving stability and comfort while also smoothing airflow around the rider. The design has been refined to balance aerodynamic performance with control and long-duration comfort.
Pairs particularly well with Race+ and Ergo+ armrests to create a highly supportive front-end setup.
Compatible with any aerobar system designed around a standard 22.2 mm clamp diameter.
Ideal for: riders seeking a premium aerodynamic extension with increased support, improved comfort and a modern high-hand position.
Bike Fit Note: Hand position and support can have a significant impact on comfort, shoulder posture and aerodynamic sustainability. Small changes at the contact points often create some of the biggest gains in long-course comfort and performance.
Specs
Extension Length: 340mm or 400mm
Min Length: 290mm (from the front of clamp)
Extension Angle: 43 Degrees
Extension Rise: 107mm (bottom to top)
Extension Offset: 16mm total
Outer Diameter: 22.2mm
Inner Diameter:
Includes: Sold as a Pair (1 Right and 1 Left Extension)
Construction: Carbon
Colors: Matte Black
Weight: g/pair
The Profile Design 43 ASC Carbon Extensions are designed to combine aerodynamic performance, comfort and support into a highly refined extension system. Built using Aero Shaped Carbon technology, the shaped profile takes advantage of carbon’s ability to create complex forms that improve airflow while maintaining excellent strength and stiffness.
Featuring a 43° grip angle and an 87 mm rise, the 43 ASC is designed to place the wrists in a more neutral position, helping riders relax into a comfortable and sustainable aero posture. A relaxed upper body often leads to improved comfort, reduced tension and a position that can be maintained more effectively over long distances.
The wrist and forearm area has been shaped to increase support and contact area, improving stability and comfort while also smoothing airflow around the rider. The design has been refined to balance aerodynamic performance with control and long-duration comfort.
Pairs particularly well with Race+ and Ergo+ armrests to create a highly supportive front-end setup.
Compatible with any aerobar system designed around a standard 22.2 mm clamp diameter.
Ideal for: riders seeking a premium aerodynamic extension with increased support, improved comfort and a modern high-hand position.
Bike Fit Note: Hand position and support can have a significant impact on comfort, shoulder posture and aerodynamic sustainability. Small changes at the contact points often create some of the biggest gains in long-course comfort and performance.
Specs
Extension Length: 340mm or 400mm
Min Length: 290mm (from the front of clamp)
Extension Angle: 43 Degrees
Extension Rise: 107mm (bottom to top)
Extension Offset: 16mm total
Outer Diameter: 22.2mm
Inner Diameter:
Includes: Sold as a Pair (1 Right and 1 Left Extension)
Construction: Carbon
Colors: Matte Black
Weight: g/pair
