Lightweight’s rear derailleur
Lightweight’s rear derailleur weighs a mere 120 grams and is compatible with both Shimano and Campagnolo drivetrains. The cable routing to the cable-fixing bolt differs depending on which levers you use. It is made in Friedrichshafen, Germany and even has carbon knuckles. To be even lighter, carbon jockey wheels are available instead of the cutaway aluminum ones, but they wear faster.