Upgrade your bike’s drivetrain with the Campagnolo Bottom Bracket Cups PRO-TECH - IT (model OC21-PRI). Featuring advanced Pro-Tech™ technology, these cups are designed with a patented external sealing gasket that shields ball bearings from water, mud, and sand, ensuring long-lasting protection. The watertight central sleeve, made from fiberglass-reinforced polyamide, prevents internal contamination. Equipped with oversized stainless steel external bearings press-fitted onto Ultra-Torque™ half-axles, these cups provide smooth and reliable performance. Compatible with a wide range of frames, including Ekar options, this bottom bracket offers versatile threaded and PressFit configurations for optimal riding conditions.