Attention, this is the short version, the 400 millimeter long version can be found here .
The 43 ASC Extensions from Profile Design are the next evolution of the aerobar. Only the clamping and the grip area are round. Everything else is comb-tailed and therefore more streamlined. In addition, the carbon "tubes" disappear completely under the forearm due to the bend, see the competition picture on my Cervélo P5. This works better the steeper you drive the cockpit.
You can't get closer to custom models than with these extensions, all of which are well into the four-figure range. In addition, the adjustability is still available here, which in my opinion is much more important for most pilots, including myself, than looking like a professional.
The key data: 22.2 clamping and therefore suitable for all standard clampings. Inner diameter 19 millimeters, so the RS910 junction box from Shimano's Di2 fits in there. 340 millimeters long, the grip area is 97 millimeters high from the bottom edge to the end of the shifter mount and is curved at 43°. 240 grams per pair.
If you are still looking for the right Profile Design arm pads and angle spacers, you will find them here and here and can tune up your cockpit, which previously looks and feels like 08/15, without spending a fortune. And always remember: only those who lie comfortably will lie long and well. And fast. Because #aeroiseverything.
Made in Taiwan
Other tuning parts for your aero cockpit are my own grappling hooks and the computer holder from 76projects .
Attention: If you first want to assemble these parts and test drive them and then return them used at some point, please wait until they are available on Amazon. I do not take back used parts.