Found: Berner Bikes’ Carbon Fiber Derailleur Cage Upgrades
Germany’s Berner Bikes makes carbon fiber upgrade parts and accessories, carbon road and ‘cross frames and other bits. These replacement derailleur cages caught our eye despite having been available for a while now.
Available for SRAM Red, Shimano Dura-Ace mechanical and Di2, and Campagnolo Super Record, the carbon fiber cages use oversized 13t and 15t jockey wheels with slick bearings to reduce friction. You can order them as a hop up kit on its own, or as a complete derailleur. You can even send in your own and have them do the conversion for you. They even offer a Ceramic Speed bearing upgrade if you’ve got money burning a hole in your pocket.
The switch adds about 19g to the part, but they say it’s good for almost a six watt savings and that numerous pros are running them in the peloton. The Shimano Dura-Ace part’s shown above, click through for more pics and pricing…
The outer face of the Shimano part above, a converted SRAM Red derailleur below.
Prices range from €269 up to €659 depending on model and whether you’re ordering parts or a complete derailleur.