Deda Fast Pro Extensions: A Premium Choice for Aerodynamic Cycling

The Deda Fast Pro Extensions stand out as a top-tier offering in the aerodynamic extension sector, boasting a full carbon construction, a wide array of fit adjustments, and seamless integration with electronic shifting systems. Despite a few minor drawbacks, these extensions present a highly versatile solution for cyclists aiming to enhance their aerodynamic posture on traditional drop-bar bicycles.

These extensions arrive as a complete package, with optional accessories available for further customization. The standard model features conventional end grips compatible with major electronic bar-end shifters, including specialized 3D-printed grips for SRAM Blips and Shimano SW-R9150, ensuring a secure and tidy shifter placement. Deda emphasizes compatibility exclusively with electronic groupsets, a reasonable expectation given the product's price point and target demographic.

Installation of the Fast Pro is remarkably straightforward compared to many other aero extension systems. A notable design element is the direct bolting of both the handlebar clamp and armrests into the aluminum spacer, simplifying height adjustments by eliminating the need for various bolt lengths. The circular handlebar clamp accommodates a broad range of handlebars, with a stated diameter of 31.7mm, effectively fitting 31.8mm handlebars. While the 19mm clamping width might pose compatibility challenges with certain integrated aero cockpits due to restricted space, the extensions are also showcased on gravel bikes, reflecting their growing adoption for comfort in ultra-endurance and bikepacking events. Achieving an optimal riding position can often be a complex process with adjustable aero extensions; however, the Fast Pro's design facilitates easier setup and fine-tuning. The armrest pads, secured with adhesive backing, align with mounting holes for extensive fore-aft and lateral adjustments, with independent pad angle adjustments further simplifying the fit process. Despite these advantages, the minimal thickness of the armrest padding can cause discomfort from bolt heads during extended rides, and the open-top design of the height spacers is prone to collecting water, issues that could be improved with more refined design choices like a simple cap or cover. The extensions are available in a single length, adjustable from 330mm to 410mm, which might not suit all riders, particularly those desiring a shorter setup. Similarly, the relatively short 3D-printed hand grips, while suitable for some, may not accommodate riders with larger hands. The SRAM Blip mounting positions are well-designed for easy shifting, and the computer mount, also 3D-printed, supports both Garmin and Wahoo standards, though its placement might be too close to the left armrest for wider setups.

Ultimately, the Deda Fast Pro Extensions, while a significant investment, proved exceptionally comfortable and performant during testing, particularly benefiting from its standard spacer height. The absence of additional spacer options included in the initial purchase, necessitating extra costs for customization, is a drawback at this price point. Nevertheless, the Fast Pro stands as a competitive option against many comparable full-carbon systems, offering an excellent blend of comfort, adjustability, and aerodynamic advantages for both road and off-road cycling. This product empowers cyclists to achieve peak performance through a refined riding position, highlighting the brand's commitment to innovation and rider-centric design.