The Subsonic/Ergo/39a aerobar combines the low stack Subsonic bracket withthearm hugging Race armrest to offer an industry leading fit range oriented towardslow, narrow positions. The 39a extension offers a comfortable 39 degree angle witha 87mm rise. This is the only low stack clip on in the market that maintains the padto grip angle as the bar is stacked up

Subsonic not just another aerobar bracket. It bringsour next generation fit range to a low stack bracketdesign. This allows the bar to use our riser kits toincrease the stack without changing the relationshipbetween the armrest and the grips.The Ergo armrest has been designed to tightly cupthe riders arms facilitating a narrow position andincreasing control at speed.

The Subsonic/Ergo is designed to achievea lower stack height than standardaerobars, without the added frontal areaof a below the basebar extension clampingsystem. This improves aerodynamics and thefit range.