Campagnolo Ultra USB Bearing Kit for QCK-TECH Cups

The ULTRA Ceramic Bearing is a subtle yet essential component designed for maximum smoothness and efficiency in the bottom bracket area. It enhances the performance of Campagnolo drivetrain systems by improving precision and minimizing friction during every pedal rotation.

Aerospace-Grade Silicon Nitride Balls - The bearings use silicon nitride balls manufactured to international aerospace standards, ensuring minimal inclusions, superior roundness, and excellent surface integrity. This results in lower friction and an extended service life.

High-Performance Resin Cage & Double-Seal System - A high-performance resin cage reduces noise and friction between the balls, while a double-seal system provides optimal protection: the inner seal safeguards the bearing surfaces, and the outer seal between the ring and axle keeps the system clean and running smoothly over time.

Lightweight Design - Weighing only 49 g in the BSA version, the ULTRA Ceramic Bearing achieves a 3 g weight reduction compared to the standard model - a fine detail that enhances efficiency and pedaling fluidity.

Compatibility and Replacement - This bearing is exclusively compatible with QCK-TECH 13-speed bearing cups and supplied as two individual bearings for replacement of an existing QCK-TECH complete bottom bracket.