Campagnolo Record 11s Rear Derailleur features a carbon fiber outer plate for increase rigidity. The upper and lower aluminum bodies are black for a more streamlined look. The new aluminum fixing bolts are 53% lighter than steel and 22% lighter than titanium. The Record pulleys are fitted on an aluminum and carbon cage and turn on ceramic bearings. Campagnolo Record 11 Speed Rear Derailleur weighs 172 grams.