It features Pro-Tech™ technology, which consists of a patented external sealing gasket that protects the ball bearings from harmful ingress of water, mud, and sand, and a sealed central sleeve made of glass fiber-reinforced polyamide to prevent internal contamination. The new cups mate with the oversized external stainless steel bearings pressed onto the two Ultra-Torque™ half-axles firmly fixed to the crank arms. Thanks to the Pro-Tech™ sealing system, performance is always optimal, wherever and however you ride. The Ekar bottom bracket options offer wide compatibility with frames on the market thanks to a complete range of threaded and PressFit cups.

Features

• Specifically designed for gravel - protected from harmful ingress of water, mud, and sand.
• ProTech™: patented sealing system with external sealing gasket and internal polyamide resin sleeve.
• Oversized external stainless steel bearings are fixed directly to the crank arms - for optimal performance and ease of maintenance.
• Wide compatibility with frames on the market thanks to a complete range of threaded and PressFit cups.
• Actual weight: 55 g (English version), 81 g (BB30 version), 51 g (PressFit BB86 version).

Technology

Pro-Tech™
The patented Pro-Tech™ double-seal technology firmly connects the two half-axles inside the bottom bracket and protects the bearings from water and mud ingress, providing high-performance longevity even in the worst conditions. The innovative and proven Ultra-Torque™ technology was developed with gravel in mind: the Hirth joint of the Pro-Tech™ system features self-centering and self-aligning teeth located at the center of the crank where the ends of the integrated half-axles meet. The axles are fastened together with a single oversized protected bolt; their precise coupling can even compensate for misalignment that some carbon frames may have due to tiny manufacturing tolerance differences.

The torque transmission of the Pro-Tech™ crankset system is as efficient as that of a single thru-axle and is lighter. Additionally, being better protected than other systems, it is also more durable. The oversized stainless steel bearing placed on the crank arm, outside the bottom bracket cups, offers maximum stiffness, smoothness, and resistance thanks to the increased diameter of the axles.