ENVE’s Carbon-Fiber Road Bar Clip-On Extensions bring carbon-fiber mastery, incredible adjustability, and light weight to the world of aero extensions. The set, including hardware and pads, weigh in at 525g, thanks to uni-directional carbon-fiber employed for the extensions, the receivers, and the armrests.

Every aspect of extensions they’ve found a way to improve. The clamps have two mounting points for the armrests, one over the handlebars, one in front. Each armrest has eight mounting holes to allow you to adjust the pads fore-aft, narrow-wide, and for canting. They figure the minimum width between the pads will be 200mm, and the maximum, depending on the width of the center section, will be 340mm. The max cant angle is ten degrees inward. The pads are made of neoprene.

The extensions themselves start out long, and can be adjusted for reach as well as cut down for customization. Uncut, they extensions are J-bends, with threading holes for mechanical or electronic cables to run internally. But the extensions can be cut down in front to make S-bends, or even straight. Depending on what you want, you can cut them down from the front or from the rear, with cut lines discreetly marked so you know exactly where to cut and can easily transfer the cuts to the other bar. They assume you’ll want to cut them down to size. Max extension length is 317mm If you go with the J-bend, they figure the kit will way 455g, with the S-bend 445g.

Better still, there’s a five-year warranty and lifetime crash replacement policy backing these.

The ENVE Carbon-Fiber Road Bar Clip-On Extensions are not only light and fast, but comfortable.