Description

Profile Design 39a Aerobar Extensions: Unlock Your Ultimate Aero Position
In the relentless pursuit of speed, every second counts. For dedicated triathletes and time trial specialists, achieving the perfect balance between an aggressive aerodynamic profile and sustainable comfort is the holy grail of performance. Enter the Profile Design 39a Aerobar Extensions, a masterclass in engineering designed to elevate your ride and help you slice through the wind with unparalleled efficiency. As a premium spare part for your handlebar setup, these extensions offer a significant upgrade in both aerodynamics and ergonomics.
The foundation of the 39´s performance lies in its sophisticated aerodynamic design. Featuring innovative Aerodynamic Kamm shaping at the rise section, these extensions are meticulously crafted to minimize drag and reduce your frontal area. This advanced shaping allows air to flow smoothly over the bars, creating a clean airfoil that provides a tangible advantage when you´re pushing against the clock or battling a headwind.
Long distances demand a position you can hold for hours. The signature 39° bend of the 39a extensions provides a natural and comfortable wrist angle, reducing strain on your arms, wrists, and shoulders. This carefully considered ergonomic design is crucial for maintaining power and focus throughout the entirety of your race or long training session. As part of the Alloy II Extension Series, it offers an extensive fit range and low weight, along with minimal frontal area. When you combine this with the Ergo armrest, it creates a fit that will aid most riders in optimising their position for both speed and comfort.
A perfect fit is a personal fit, and adjustability is where the 39a extensions truly shine. The A-Series extensions now allow the rider and bikefitter to fine-tune the wrist angle without changing other aspects of the fit. This level of micro-adjustment is a game-changer, enabling you to dial in your exact preferred position for maximum power output and minimal fatigue. Furthermore, the dimensions are optimised for use with our plus series armrests, ensuring a seamless and stable integration with your existing or new Profile Design setup for a cohesive and reliable cockpit.
Extensions
The Profile Design 39a extensions are engineered to provide a distinct advantage. With a full 400mm length, they offer ample room for a wide range of fit options, from compact to stretched-out positions. The 87.3mm rise helps achieve an aggressive, low-profile posture, while the 15mm offset contributes to the fine-tuning of your reach and hand position. This combination of dimensions, coupled with the signature 39-degree bend, makes the 39a a versatile and powerful tool for any athlete looking to gain a competitive edge.
Technical Specifications
* Construction: Alloy
* Outer Diameter Extension: 22.2mm
* Extension Length: 400mm
* Extension Offset: 15mm
* Extension Rise: 87.3mm
* Weight: 206g
Scope of delivery: 1x Profile Design 39a Aerobar Extensions 400mm.
Upgrade your time trial or triathlon bike with the Profile Design 39a Aerobar Extensions and experience a new level of performance. By combining cutting-edge aerodynamics, rider-focused ergonomics, and precision adjustability, these extensions are the key to unlocking your fastest and most comfortable bike split yet