Shimano 5500 68mm 118.5mm 68mm Bottom Bracket - Live4Bikes

Shimano 5500 68mm 118.5mm 68mm Bottom Bracket - Live4Bikes

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  Shimano 105 BB-5500 Octalink Bottom Bracket: Precision Engineering for Smooth Cycling Performance, and Why Choose Live4Bikes for Your Purchase


The Shimano 105 BB-5500 Octalink Bottom Bracket is a premium cycling component that guarantees smooth pedaling and optimal power transfer. With its precision engineering and Octalink technology, this bottom bracket offers superior performance for road cyclists. In this article, we will explore the key features and benefits of the Shimano 105 BB-5500 Octalink Bottom Bracket and explain why Live4Bikes is the preferred retailer for purchasing this top-notch component.

Precision Engineering for Smooth Cycling Performance:

The Shimano 105 BB-5500 Octalink Bottom Bracket incorporates advanced features that contribute to its smooth cycling performance. Let's delve into the notable aspects of this bottom bracket:

  1. Octalink Technology: The innovative Octalink technology utilizes a unique splined interface between the crankset and bottom bracket. This design enhances power transfer efficiency and reduces flex during pedaling, resulting in a smooth and efficient cycling experience.

  2. English Thread: With a 68mm x 118.5mm English thread, this bottom bracket is compatible with a wide range of road bike frames. The precise fit ensures stability and eliminates any unwanted noise or vibrations during rides.

  3. Precision Engineering: The Shimano 105 BB-5500 Octalink Bottom Bracket is crafted with precision engineering, guaranteeing consistent performance and minimal friction. The result is a seamless rotation that optimizes power transfer with each pedal stroke.

  4. Durability: Constructed with high-quality materials, this bottom bracket is built to withstand the demands of road cycling. Its durable design ensures longevity, allowing you to ride with confidence and reliability.

Why Choose Live4Bikes:

Live4Bikes is a reputable online retailer known for providing cyclists with high-quality products and exceptional customer service. Here's why you should consider purchasing your Shimano 105 BB-5500 Octalink Bottom Bracket from Live4Bikes:

  1. Genuine Products: Live4Bikes sources its products directly from reputable manufacturers, guaranteeing that you will receive an authentic Shimano 105 BB-5500 Octalink Bottom Bracket that meets the highest quality standards.

  2. Extensive Product Selection: Live4Bikes offers a wide range of cycling components and accessories, catering to the diverse needs and preferences of road cyclists.

  3. Competitive Pricing: Live4Bikes strives to offer competitive prices, ensuring that you receive excellent value for your investment.

  4. Outstanding Customer Service: Live4Bikes is committed to providing reliable and customer-centric service. Their knowledgeable team is readily available to assist you with any inquiries or concerns, ensuring a smooth and satisfying shopping experience.


The Shimano 105 BB-5500 Octalink Bottom Bracket is a reliable and high-performance component that delivers smooth cycling performance for road cyclists. When considering your purchase, Live4Bikes emerges as the preferred destination for acquiring this top-quality bottom bracket. With genuine products, an extensive selection, competitive prices, and exceptional customer service, Live4Bikes ensures a seamless and satisfying shopping experience. Upgrade your cycling performance with the Shimano 105 BB-5500 Octalink Bottom Bracket from Live4Bikes and enjoy a smooth and efficient ride that empowers you to conquer the road with confidence.


 How to Find the Correct Size Bottom Bracket for Your Bike

The bottom bracket is a critical component of your bicycle's drivetrain system, connecting the crankset to the frame. Selecting the correct size bottom bracket is essential for maintaining smooth pedaling and maximizing power transfer. In this article, we will guide you through the process of finding the right bottom bracket size for your bike and discuss the various types of bottom brackets commonly used in bicycles.

Understanding Bottom Brackets:
Before diving into the sizing process, let's briefly explore the different types of bottom brackets available. The choice of bottom bracket depends on your bicycle's frame design, crankset compatibility, and personal preferences. Here are a few common types:

1. Threaded Bottom Brackets:
Threaded bottom brackets are the traditional style, consisting of cups that screw into the frame's bottom bracket shell. They are commonly available in two versions: English/BSA (British Standard) and Italian. Threaded bottom brackets require a compatible frame and crankset.

2. Press-Fit Bottom Brackets:
Press-fit bottom brackets have become popular in recent years, particularly in modern carbon frames. Instead of threading, they rely on a tight press fit into the frame's bottom bracket shell. Common press-fit standards include BB86, BB90/92, PF30, and BB30. It's crucial to ensure compatibility between your frame and crankset when choosing a press-fit bottom bracket.

3. External Bottom Brackets:
External bottom brackets, often referred to as outboard bearings, are designed to be used with external bearing cranksets. They consist of two sets of bearings housed in cups that are threaded into the frame. External bottom brackets are available in different standards, such as Shimano Hollowtech II and SRAM GXP.

Finding the Correct Bottom Bracket Size:
To determine the correct bottom bracket size for your bike, follow these steps:

Step 1: Identify the Frame's Bottom Bracket Shell Type:
Check the specifications of your bicycle's frame to determine its bottom bracket shell type. Common types include threaded (English or Italian) or press-fit (BB86, BB90/92, PF30, BB30, etc.). This information is often provided by the manufacturer or can be measured directly.

Step 2: Determine the Axle Diameter:
The axle diameter is another crucial factor in selecting the right bottom bracket. It corresponds to the diameter of the crank spindle that passes through the bottom bracket bearings. Different cranksets have varying axle diameters, such as 24mm, 30mm, or 30/24mm (commonly known as DUB).

Step 3: Consider Compatibility:
Ensure that the bottom bracket you choose is compatible with your frame and crankset. Manufacturers often provide compatibility charts or guidelines to help you make the right selection. If you're uncertain, consult a professional bike shop for assistance.

Step 4: Seek Professional Advice:
If you are unsure about any aspect of selecting a bottom bracket, it's always a good idea to consult a bike shop or a knowledgeable mechanic. They can offer valuable expertise and help you make an informed decision based on your specific bike model and requirements.

Selecting the correct size bottom bracket for your bike is vital for maintaining optimal performance and compatibility between your frame and crankset. Understanding the various bottom bracket types, identifying your frame's specifications, determining the axle diameter, and considering compatibility are essential steps in the selection process. When in doubt, seek guidance from professionals who can provide personalized advice and ensure a smooth and reliable cycling experience. Remember, a well-chosen bottom bracket will contribute to a more enjoyable and efficient ride.

  Types of BB

 There are several types of bottom brackets (not "bottom brakes") used in bicycles. The bottom bracket is the component that connects the bicycle's crankset to the frame and allows it to rotate smoothly. Different types of bottom brackets have been developed over the years, each with its own design and compatibility with specific cranksets and frames.

Here are some common types of bottom brackets:

1. Threaded (BSC/English): This is the traditional type of bottom bracket, where the cups are threaded into the bicycle frame.

2. Press-fit: Press-fit bottom brackets do not have threads and are instead pressed directly into the frame. They are generally found in modern carbon frames and are known by various names like BB86, BB90, BB92, BB30, PF30, etc.

3. Square Taper: Square taper bottom brackets have a square-shaped spindle that fits into square holes in the crankarms. They were popular in the past but are less common in modern bicycles.

4. Octalink: Shimano's Octalink bottom brackets feature eight splines on the crankarm interface, providing a larger contact area for improved power transfer.

5. ISIS Drive: The ISIS Drive system also uses splines but with a 10-spline pattern on the crankarm interface.

6. Hollowtech II: This is a type of bottom bracket system developed by Shimano, where the bearings are housed in outboard cups.

7. BB30/PF30: These bottom brackets have larger-diameter spindles and use press-fit cups. BB30 spindles are 30mm in diameter, while PF30 spindles are 30mm but have a wider shell.

8. BB386EVO: A variant of BB30, BB386EVO bottom brackets have a wider bottom bracket shell and a 30mm spindle.

9. BBright: Developed by Cervelo, this bottom bracket system combines elements of BB30 and PF30.

It's important to note that the bicycle industry is constantly evolving, and new standards and bottom bracket types may have emerged since my last update. Additionally, different bike manufacturers may have their own proprietary bottom bracket systems. Always check the specifications of your specific bicycle model to know which type of bottom bracket it uses and to ensure compatibility with replacement parts or upgrades.