The Campagnolo XDR Alu Freewheel Body is designed for SRAM 11-speed and 12-speed drivetrain systems. This version is equipped with ceramic USB bearings, offering enhanced smoothness and durability compared to traditional bearings. Made from high-quality aluminum, this freewheel body ensures both lightweight performance and long-lasting reliability. The pawl diameter of 33 mm guarantees precise and efficient engagement for seamless power transfer.