SRAM AM BB DUB BSA 73 MTB AI bottom bracket (00.6418.031.001)

The SRAM AM BB DUB BSA 73 MTB AI bottom bracket combines precise compatibility with modern MTB cranksets and sealing technology designed for intense off-road riding. The construction solutions of this bottom bracket allow for effective cooperation with crankshaft axes of 28.99 mm diameter and BSA bottom brackets with a width of 73 mm.

SRAM DUB Compatibility Technology

The DUB system used in the SRAM AM BB DUB BSA 73 MTB AI model ensures full compatibility with cranksets equipped with a DUB axle, while allowing efficient power transfer to the drivetrain. This technology simplifies component selection and provides a uniform axle diameter, contributing to the durability of the entire system. With this solution, quick upgrades to the bike can be made without the need to replace many drivetrain elements.

Advanced Gutter Seal Sealing System

The SRAM AM BB DUB BSA 73 MTB AI integrates the Gutter Seal sealing system, which effectively protects the interior of the bottom bracket from moisture and dirt. The innovative seal design minimizes rolling resistance, resulting in smoother operation of the mechanism. This solution extends the lifespan of the bearings even when used in challenging, muddy off-road conditions.

Bottom Bracket Design and Dimensions

The SRAM AM BB DUB BSA 73 MTB AI bottom bracket is designed for bottom bracket shells with a width of 73 mm, which is standard in modern mountain bikes. The precisely matched crank axle diameter of 28.99 mm ensures stability and rigidity of the entire drivetrain. The BSA type facilitates the installation and servicing of the bottom bracket in the bike frame.

SRAM AM BB DUB BSA 73 MTB AI - features:

• Dedicated to BSA bottom bracket shells with a width of 73 mm;
• Full compatibility with DUB system crankshaft axes of 28.99 mm diameter;
• Gutter Seal sealing technology effectively protecting the bearings;
• Efficient power transfer to the mountain bike drivetrain;
• Quick upgrade possibility to DUB standard;
• Stability and rigidity of the drivetrain during intense riding;
• Minimization of rolling resistance through an advanced sealing system.