Shimano BSA SM-BB93 Z/TL-FC24 bottom bracket insert (ISMBB93B)

The Shimano BSA SM-BB93 Z/TL-FC24 bottom bracket features HOLLOWTECH II technology, providing a precise solution for advanced drivetrain systems. The BSA design and the use of ball bearings ensure smooth operation and reliability during intense use.

HOLLOWTECH II Technology

In the Shimano BSA SM-BB93 Z/TL-FC24 model, HOLLOWTECH II technology plays a crucial role in ensuring stiffness and efficient power transfer thanks to the integrated design of the axle and crank. This solution reduces the system's weight and improves drivetrain responsiveness in demanding conditions. The precise fit of the components supports long-lasting, stable operation of the entire system.

Ball Bearings and BSA Design

The ball bearings mounted in the bottom bracket shell ensure smooth rotation and high wear resistance during intensive riding. The BSA design guarantees compatibility with shells of 68–73 mm width, making this model a universal choice for a wide range of bike frames. The optimal distribution of forces within the bottom bracket contributes to a quiet and efficient operation of the crank mechanism.

Fit with Crank Axle

The Shimano BSA SM-BB93 Z/TL-FC24 is designed to work with cranks featuring a 24 mm axle diameter, allowing integration with the most popular drivetrain systems. Properly fitted components minimize rolling resistance, enhancing the efficiency of power transfer from the crank to the drivetrain. The precision of each element positively impacts reliability in everyday use.

Shimano BSA SM-BB93 Z/TL-FC24 Bottom Bracket - Features:

• HOLLOWTECH II technology ensuring stiffness and precise power transfer;
• Ball bearings guaranteeing smoothness and durability during riding;
• BSA design adapted for shells with a width of 68–73 mm;
• Compatibility with cranks featuring a 24 mm axle diameter;
• Precise fit of components for stable drivetrain operation;
• High wear resistance during intense use;
• Optimal distribution of forces within the bottom bracket mechanism;
• Universal application for a wide range of bike frames.