SHIMANO SM-BB5700 Bottom Bracket Bsa Road Hollowtech 68MM 1.37X24T

( Brand: Shimano ), ( Manufacturer Part Number: SM-BB5700 ), ( Part Type: Bottom Bracket ), ( Bottom Bracket Shell Type: Bsa ), ( Spindle Type: Hollowtech Ii ), ( Material: Aluminum, Steel ), ( Shell Width: 68 Mm ), ( Color: Silver ), ( Compatible Bike Type: Road Bike )

Review SHIMANO Bottom Bracket 68mm Bsa Road Hollowtech Silver

The **Shimano SM-BB5700 Hollowtech Bottom Bracket** is a precision-engineered, high-performance component designed to deliver uncompromising reliability and efficiency for road cyclists seeking a seamless riding experience. Built to Shimano s Hollowtech II standard, this bottom bracket features a **68mm BSA shell** a universal fit for most road and gravel frames while maintaining the industry-leading **1.37-inch spindle width**, ensuring compatibility with a wide range of drivetrains, including Shimano s own 105, Ultegra, and Dura-Ace groupsets, as well as SRAM and Campagnolo systems. The **24-tooth crankarm interface** (via the integrated right-side spindle) is optimized for smooth power transfer, reducing rotational mass and minimizing friction, which translates to more efficient pedaling and reduced fatigue over long rides. Crafted from **high-strength steel**, the SM-BB5700 is engineered to withstand the rigors of daily training and competitive racing, offering exceptional durability without sacrificing weight. Its **sealed cartridge design** eliminates the need for frequent lubrication or maintenance, ensuring a consistent and quiet operation even under demanding conditions. Whether paired with a lightweight carbon or aluminum crankset, this bottom bracket serves as the backbone of a responsive drivetrain, allowing riders to channel every ounce of effort into forward motion. Ideal for performance-oriented cyclists who demand precision, longevity, and compatibility across multiple setups, the Shimano SM-BB5700 is a testament to the brand s commitment to innovation and engineering excellence in the cycling world.

The Shimano SM-BB5700 Hollowtech II Bottom Bracket is a mid-range component designed for road and gravel bikes. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

1. **Compatibility and Standardization**: The BB5700 is a widely adopted standard in the road and gravel cycling community. It uses the 68mm BSA shell standard, which is common on most road frames, making it easy to install and replace. The 1.37x24t crankarm specification is also standard for many Shimano road groupsets, ensuring broad compatibility with existing drivetrains.

2. **Durability and Reliability**: Shimano Hollowtech II bottom brackets are known for their robustness. The sealed cartridge design reduces the risk of dirt and moisture ingress, which can prolong the lifespan of the bearings. The BB5700 is built to handle the stresses of daily riding, including climbing, descending, and rough terrain if used in gravel applications.

3. **Cost-Effective**: Compared to higher-end bottom brackets from Shimano (e.g., the BB-RS9000 or BB-RS9100), the BB5700 offers a more affordable option without sacrificing too much performance. It is a solid choice for riders who want a reliable bottom bracket without investing in premium components.

4. **Maintenance**: The cartridge design simplifies maintenance. Unlike threaded bottom brackets, which require periodic bearing replacement and adjustment, the BB5700 can be replaced as a single unit when it wears out. This reduces the complexity and time required for maintenance.

5. **Performance**: The BB5700 provides smooth and consistent performance, with low friction and minimal play. It is suitable for most riding conditions, including urban commuting, road racing, and light gravel riding. The bearings are designed to handle the rotational forces of pedaling efficiently.

6. **Widespread Availability**: Due to its popularity, the BB5700 is easy to find in bike shops and online retailers. Replacement parts, tools, and installation guides are also readily available, which can be helpful for riders who prefer to do their own maintenance.

1. **Weight**: While not excessively heavy, the BB5700 is not the lightest bottom bracket available. Higher-end options like the BB-RS9000 or BB-RS9100 are significantly lighter, which may be a consideration for riders prioritizing weight savings in their drivetrain.

2. **Limited Upgrade Path**: If you plan to upgrade your drivetrain in the future, the BB5700 may not be the most future-proof choice. Higher-end Shimano groupsets (e.g., Ultegra or Dura-Ace) often come with more advanced bottom brackets (e.g., BB-RS9000), which may require a frame with a compatible shell or an adapter. However, the 68mm BSA standard remains widely supported, so this is less of an issue for most riders.

3. **Material and Build Quality**: The BB5700 is made from steel, which is durable but heavier than aluminum or carbon alternatives. While this is not a significant drawback for most riders, those seeking the absolute lightest or stiffest bottom bracket may prefer higher-end options.

4. **Noise**: Like many cartridge bottom brackets, the BB5700 can produce some noise over time, particularly if the bearings wear out or if the bracket is not properly installed or lubricated. Regular maintenance can mitigate this issue, but it is something to be aware of.

5. **Not Ideal for Extreme Conditions**: While the BB5700 is robust, it is not designed for extreme off-road conditions or heavy-duty use. For aggressive gravel riding, mountain biking, or track racing, more specialized bottom brackets (e.g., Shimano s BB-MT800 for MTB or BB-RS9000 for road) may be more appropriate.

The Shimano SM-BB5700 Hollowtech II Bottom Bracket is a well-rounded, reliable, and cost-effective choice for most road and gravel riders. It strikes a balance between performance, durability, and affordability, making it suitable for a wide range of applications. Its compatibility with standard 68mm BSA frames and Shimano drivetrains further enhances its appeal. While it may not be the lightest or most advanced option available, its strengths far outweigh its minor drawbacks for the average rider.

If you are looking for a bottom bracket that offers a good balance of quality, reliability, and value, the Shimano SM-BB5700 is an excellent choice. It is particularly well-suited for:

- Road bikes with standard 68mm BSA bottom brackets.

- Riders who prioritize durability and ease of maintenance over ultra-lightweight components.

- Those who want a component that is easy to find and replace without breaking the bank.

For riders who plan to invest in a higher-end drivetrain (e.g., Ultegra or Dura-Ace) in the future, the BB5700 remains a solid interim choice, though you may eventually want to upgrade to a more advanced bottom bracket like the BB-RS9000. If weight savings or extreme performance are critical, consider higher-end options, but for most riders, the BB5700 delivers more than enough to enhance their riding experience.

Details:

Bearings spin smoothly by hand without play. Material and construction: silver alloy threaded cups with integrated sealed cartridge bearings black composite sleeve. Plastic sleeve and seals have dirt surface scuffs but remain intact. Shimano SM-BB5700 Bottom Bracket 68mm BSA 1.37x24T Road Hollowtech II Silver.

Part type: BSA English-thread bottom bracket cups with plastic sleeve for 24mm Shimano Hollowtech II crank spindles. Color and finish: silver anodized bearing cups with black seals sleeve. Brand: Shimano SM-BB5700 external bottom bracket for Hollowtech II road crank sets. Bottom bracket shell compatibility: BC1.37x24 BSA English-thread road frames.

Cup exteriors, wrench flats, and threads show installation marks, scratches, small nicks, ingrained grease, light oxidation.

part #: smbb5700 prices

• $16.19-$24.86

specifications ribicycl:

• brand: Shimano
• mpn: Sm-bb5700
• part type: Bottom Bracket
• bottom bracket shell type: Bsa
• spindle type: Hollowtech Ii
• material: Aluminum, Steel
• shell width: 68 Mm
• color: Silver
• compatible bike type: Road Bike

returns ribicycl:

• method: Money back
• policy: Returns Accepted
• paid by: Seller
• time: 60 Days

offer ribicycl:

• quantity: 1
• started: March 24, 2026
• best offers: True
• availability: In Stock
• sold: 0
• options: Ship-to-home

general ribicycl:

• condition: Used
• Cycling > Bicycle Components Parts > Bottom Brackets

seller ribicycl:

• rating: 100.0%
• city: Neenah, Wisconsin
• # reviews: 32811

shipping ribicycl:

• service: Standard, Expedited
• cost: $5.95
• class: Standard, Expedited
• type: Fixed
• transit: 2-6 Days

payments ribicycl:

• credit card: Diners-club
• other
• wallet: Paypal

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