Profile Design 39a Aluminum Aerobar Extensions - Aluminum 400mm Black

Profile Design 39a Aluminum Aerobar Extensions - Aluminum 400mm Black. 39a Aluminum Aerobar extensions provide a comfortable position for the riders hands relative to the armrests. They enhance performance by allowing the rider to relax into their optimal position so each rider can chase their best performance.

39a extensions have a 39 degree angle for the grip. The rider can choose whether to hold high for the shrugged position or low for a more open head up position

7.5mm lateral shift per side allowing the rider to get their hands narrower or wider without tilting the extensions so much that the shifters touch

Aluminum construction pre-drilled for bar-end shifter cable routing

Designed for cables to be routed out the rear of the extensions; no need for cable exit holes

22.2mm diameter in the clamping area

Compatible with electronic or mechanical shifters