aerobars rennrad test Profile Design 43 ASC Carbon Extensions 400 mm – aerodynamisch & leicht
SKU: 42128482639
aerobars rennrad test

aerobars rennrad test Profile Design 43 ASC Carbon Extensions 400 mm – aerodynamisch & leicht

Sale price$19.12 Regular price$21.24
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Description

aerobars rennrad test Profile Design 43 ASC Carbon Extensions 400 mm – aerodynamisch & leichtThe 43 ASC extensions from Profile Design are the next evolutionary step in aero handlebars. Only the clamp and the grip area are round. Everything else is kammtail shaped and therefore more aerodynamic. In addition, the carbon "tubes" disappear completely under the forearm due to the bend, see the competition photo on my Cervlo P5. This works better the steeper you ride the cockpit. These extensions are the closest you can get to custom models, which

The 43 ASC extensions from Profile Design are the next evolutionary step in aero handlebars. Only the clamp and the grip area are round. Everything else is kammtail-shaped and therefore more aerodynamic. In addition, the carbon "tubes" disappear completely under the forearm due to the bend, see the competition photo on my Cervélo P5. This works better the steeper you ride the cockpit.

These extensions are the closest you can get to custom models, which are all well into the four-figure range. In addition, the adjustability is still available, which in my opinion is much more important for most pilots, including myself, than looking like a professional.

The key data: 22.2 clamp and therefore suitable for all standard clamps. Inner diameter 19 millimeters, so the RS910 junction box from Shimano's Di2 fits in there. 400 millimeters long, the grip area is 107 millimeters high from the bottom edge to the end of the shifter mount and bent at 43°. 230 grams per pair.

These extensions are also available for shorter people in 340 length here .

The ideal computer holder from 76 Projects is available here in my shop, see also the last picture for mounting at the very front of the round part.

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 your previously run-of-the-mill looking and feeling cockpit without spending a fortune. And always remember: only those who lie comfortably will lie well for a long time. And fast. Because #aeroiseverything.

Other tuning parts for your aero cockpit are my own grappling hooks and the computer holder from 76projects .

Attention: If you want to assemble these parts and test drive them first and then return them used, please wait until they are available on Amazon. I do not take used parts back.

Made in Taiwan

Manufacturer information according to GPSR:

GROFA® Action Sports GmbH
Otto-Hahn-Straße 17
65520 Bad Camberg

E-Mail [email protected]

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SKU: 42128482639

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Alison L.
Draper, US
★★★★★ 5
Pretty nice little bag
Color: Black
Wasn’t sure if I would like the size of the bag as I was planning on using it as my everyday purse. Pleasantly surprised by how much can fit in it. Definitely good for travel as it will hold what you need. I would only say that the strap would benefit from having a wire in it to prevent people from just cutting it off. Other than that, it is a nice looking bag. Good size. Seems to be well put together and sturdy. Note if you are on the bigger size, the strap might not fit around you. I do have to have it fully extended to fit properly. But it is comfortable to wear and the wide strap doesn’t put too much pressure on my shoulder. I would buy again or at least from the same brand.
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Reviewed in the United States on April 8, 2026
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Heather
West Palm Beach, US
★★★★★ 5
Can’t beat this purse/ bag
Color: Green
Nice, light weight and plenty of room for lots of stuff actually. Love the built-in card holders very convenient, durable, the locking features with the zippers, genius idea,and the green is so pretty if you’re looking for a smaller bag and everyday smaller bag that can hold all your crap (face it ladies we carry a lot of crap) this purse is absolutely beautiful and perfect. I’m actually thinking about getting one for all my work stuff instead of my backpack.
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Reviewed in the United States on March 21, 2026
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Whitney Dibbern
Omaha, US
★★★★★ 5
Perfect bag for everyday wear
Color: Black
This bag is perfect! It’s just the right size and not super bulky. I love all the pockets and the clip to lock it! I loved the black one so much I went back and bought it in green! It’ll be so perfect to use on our trip but also it’s a great everyday bag. It’s super light weight and comfortable to wear front or on the back.
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Reviewed in the United States on May 22, 2026
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ggrace
San Leandro, US
★★★★★ 4
Nice but strap is deforming
Color: Green
This little bag seems to be very well constructed and is the perfect size for travel fir me. PROS: - has zippered. pockets including one in the back - The interior is a light beige color so you can see inside easily - the zippered pockets open wide for easy access CONS: - I wish the zipper on the top (main) pocket was a double zipper. - The attached shoulder strap is thin with no reinforcement. The strap is becoming deformed (wrinkled, folded) after only a couple weeks of daily use. The US no way to replace it as it is sewn into the top Overall it is a nice bag but I will look to replace it soon as a daily user because the strap issue
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Reviewed in the United States on March 19, 2026
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Tj
Port Orchard, US
★★★★★ 5
Anti theft, and perfect size.
Color: Green
“So many great features! I especially love the anti-theft design because it gives extra peace of mind while traveling or shopping. The pockets are well thought out, the strap length is comfortable, and it holds everything I need without being bulky. Great quality for the price too.”
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Reviewed in the United States on May 12, 2026

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