CLIP-ON AEROBARS

Adding aerobars to your road bike can deliver big time savings. Here, Jack Sexty tests four sets to see if they're worth the cash...

- JACK SEXTY

Want to save time on the bike without upgrading to a dedicated tri bike? Clip-on bars are one solution, which help by reducing your frontal profile. Our wind-tunnel testing in 2021 showed that using aerobars can save you a not insignificant 102secs over a 40km bike leg when riding at 45km/h. Get the correct position and you can also increase your power output for further gains.

What’s more, comfort can be increased via the use of aerobars, but it’s vital to get the right fit. Otherwise, your power and comfort can be compromised. That’s why adjustability in aerobars is so useful, as it allows you to get the right fit for you. To truly home in on the best position, think about getting a bike fit. In the meantime, we put four sets of clip-on aerobars to the test…

PROFILE DESIGN SONIC ERGO 39A

Promising ‘100 distinct position options’ via the armrests and 1,500 configurations with the additional riser kit, Profile’s Sonic Ergo 39A is a versatile offering for those looking to dial in a great fit and elevate their tri-bar setup to the next level on a sensible budget.

The aluminium 39A is one of many different bar shapes and sizes you can pair with the Sonic bracket and Ergo armrests, and this one has a 39° upwards tilt. There are markings to accurately set the fore/aft position, and if you want to use them on a tri bike there are cable guides to accommodate shifters.

Fitting was simple on my road bike and I’m a big fan of how many different bolt holes you get on the armrests to achieve the best fit. Having your elbows and forearms squeezed too narrow or spread too wide because your set-up won’t allow for the necessary adjustments is irritating, so the number of options increases your chances of finding the perfect set-up and ride through your bike leg comfortably. The total weight for the bracket, armrests and bars is 564g.