Shimano BB-MT501 MTB BSA 68mm/73mm bottom bracket: high driving efficiency.

Shimano Hollowtech Ii Threaded Bottom Bracket 68/73 mm Shell Width with Better Sealing and Rotation The Shimano Deore bottom bracket offers high driving efficiency.

Shimano BB-MT501 MTB BSA 68mm/73mm bottom bracket: high driving efficiency.

Shimano Hollowtech Ii Threaded Bottom Bracket 68/73 mm Shell Width with Better Sealing and Rotation The Shimano Deore bottom bracket offers high driving efficiency.

Characteristics:

- Hollowtech Ii Bottom Bracket_Threaded Bottom Bracket Type
- Threaded bottom bracket shell width (Mm)_68
- Threaded bottom bracket shell width (Mm)_73



The concept of Hollowtech Ii technology focuses on producing a superior crankset that will maximize the rider's power transfer. The rigidity of the crankset ensures pedaling efficiency while its weight, a key element of the crankset, which you want is light, helps to cover longer distances where the rider needs to pedal more.

Naturally, Shimano strove to strike the optimal balance between conflicting needs for stiffness while producing a lightweight crank. Hollowtech technology is an ultra-lightweight hollow crank created by Shimano using the company's patented forging technology that also maintains rigidity.

The addition of Hollowtech Ii technology integrates the bottom bracket axle with the right crank for more rigidity and weight savings for high-dimensional balance. Its external bottom bracket bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer. The Hollowtech Ii crankset has been developed seeking the optimal balance between stiffness and rotating performance in a beautiful, lightweight crankset design. Additionally, the Hollowtech Ii crankset has high-precision sealing in the bearing area to increase durability and maintain excellent rotational performance for long periods.