
Best selling Bottom brackets from Shimano
On this page you’ll find a ranking of the best Bottom brackets from Shimano. To give you a quick overview, we’ve added the most important product details. This page always stays fresh and updates automatically.
1. Shimano Ultegra SM-BBR60
If there were a gold standard for bottom brackets, it would look like the SM-BBR60. It is easy to install, and its screwed construction ensures that the ball bearings are perfectly aligned. Additionally, this design reliably eliminates fitting issues caused by excessive manufacturing tolerances, which can occur with press-fit bottom brackets. As a result, the BBR60 does not creak, is compatible with a long list of cranks featuring a 24-millimeter axle, and is not even expensive.
It's no wonder that Shimano's Hollowtech II standard has been in use for what feels like forever. If you are looking for a practically maintenance-free, coordinated bottom bracket-crank system, you cannot overlook Hollowtech II and this bottom bracket.
Hollowtech II refers to a coordinated system of crank and bottom bracket. The cranks with this standard consist of two parts. The right arm is firmly connected to a steel axle with a diameter of 24 millimeters. The crank arms are made of hollow-forged aluminum, which does not result in any weight disadvantage even in the era of highly developed carbon technology. The bottom bracket is matched to the cranks and axles and includes ball bearings with precision seals. This way, no energy is wasted, and you can enjoy your bottom bracket for a long time.

2. Shimano BB-MT500-PA bottom bracket Press Fit
Shimano SM-BBMT500-PA Adapter for Press Fit Bottom Bracket
The Shimano SM-BBMT500-PA Press-Fit bottom bracket, known for its reliable Shimano quality, is a well-sealed bearing offered at an affordable price. It fits all road and mountain bike frames with a Press-Fit standard of 89.5 mm or 92x41 mm at the bottom bracket shell, thanks to the included spacers, and can be combined with all common Shimano Hollowtech II cranksets with a 24 mm axle. The SM-BBMT500-PA adapter is simply pressed into the bottom bracket shell without threads. For this, it is recommended to use the pressing tool developed by Shimano for this purpose. The SM-BBMT500-PA Pressfit bottom bracket from the Japanese bike specialist guarantees smooth operation and direct power transfer mile after mile.

3. Shimano Sm-Bb7241b
Shimano Ultegra - The true spirit of sports! The Ultegra series is "professionally tested," as it is directly derived from the Dura Ace group. The technologies employed in the new Ultegra 6800, such as the 11-speed drivetrain, newly designed brakes, and advanced chain refinement, represent the latest technology proven in professional racing.
Significant advantages:
- Comfort, especially on long rides, with enhanced control
- Ergonomic grip shape for easier, faster, and more precise shifting with less effort
- Rider Tuned 11-speed shifting system for universal use
- New 11-speed drivetrain increases gear selection for various riding scenarios
- Ride faster with better control, especially when gripping from above
- Brake force increased by 10% for more control
- Efficient conversion of effort into propulsion
- High rotational efficiency ensures high power output
Intended use: Road bike
Design: Hollow axle
Installation width: 86.5 mm
Frame compatibility: BB86 bottom bracket
Design: Pressed bearing cups axle
Axle diameter: 24 mm.

4. Shimano BB-UN300
The Shimano BB-UN300 is a high-quality bottom bracket designed for improved performance and stability while cycling. It features a robust square axle and is equipped with high-quality cartridge bearings that ensure smooth operation. This bottom bracket is available in various mounting types, including standard, E-Type, and chain guard options, making it versatile and adaptable for different bicycle frames. The use of aluminum for the adapter material provides high strength and durability. With a shell width of 68 mm and an axle length of 118 mm, the BB-UN300 is ideal for many common bicycle models. It offers easy installation and is suitable for self-assembly, making it a practical choice for cycling enthusiasts.
- High-quality cartridge bearings for improved performance
- Various mounting types: standard, E-Type, and chain guard
- Robust square axle for increased stability
- Adapter material made of aluminum for durability.

5. Shimano BB-TM501
Bottom bracket. Externally positioned bearing for better weight distribution and increased stability. Durable performance. Shell width: 68 mm. Installation type: BSA. Axle diameter: 73 mm. The Shimano Deore bottom bracket BB-MT501 is a high-quality component for bicycles equipped with a bottom bracket system. It features a BSA (BC 1.37) thread and is specifically designed for use with cranksets. Thanks to the improved sealing and rotation, it offers high drive efficiency and long-lasting performance while riding. With its Hollowtech II axle, the MTB BB-MT501 bottom bracket ensures high stiffness and stability, as well as easy installation in shell widths of 73/68 mm. It is therefore ideally suited to elevate your riding experience to the next level - whether for All Mountain, trekking, enduro, or downhill riding.

6. Shimano Xtr Sm-bb93
The Shimano XTR bottom bracket is robust and ideal for riding in mountainous terrain, thanks to its quiet rolling characteristics and better sealing performance. It is available with thread or for press-fit mounting and includes a bottom bracket mounting tool adapter TL-FC24. It features particularly smooth running, with a thread type of BSA and a housing width of 68/73mm.

7. Shimano Bearing balls steel HB-M820 5/32" 38 pieces

8. Shimano II-KRG
Allows the left crank to be securely clamped onto the integrated Hollowtech II axle of all Shimano Hollowtech II product lines.

9. Shimano BB-ES300 bottom bracket Octalink BSA 73 mm
The BB-ES300 bottom bracket from Shimano is a high-quality component that ensures efficient power transfer while cycling. With a housing of 73 mm and an axle length of 113 mm, it is specifically designed for BSA frames. The robust construction with reinforcement ribs guarantees high stability and durability, while the lightweight design of just 26 grams enhances the overall performance of the bike. The Octalink system allows for a precise and reliable connection between the crank and the bottom bracket, making installation and maintenance easier. This bottom bracket is ideal for cyclists who value quality and efficiency.
- Stiff and lightweight for efficient power transfer
- Robust construction with reinforcement ribs
- Quick and precise installation
- Compatible with Octalink system.

10. Shimano Bearing shell right BB-MT800 BSA
