Shimano Octalink Bottom Bracket BB-ES51 - Live4Bikes

Shimano Octalink Bottom Bracket BB-ES51 - Live4Bikes

Regular price
Sold out
Sale price
Unit price
Shipping calculated at checkout.

 Shimano Octalink Bottom Bracket BB-ES51: Optimal Performance and Versatility for Your Cycling Adventures

 The Shimano Octalink Bottom Bracket BB-ES51 is a high-quality component that offers optimal performance and versatility for cyclists seeking a reliable bottom bracket solution. Designed as part of the SHIMANO series, the BB-ES51 features the innovative OCTALINK spindle technology, making it a preferred choice for riders who value smooth power transfer and durability. In this article, we will explore the key features and benefits of the Shimano Octalink Bottom Bracket BB-ES51 and explain how its various configurations cater to different bike setups.

Smooth Power Transfer with OCTALINK Spindle Technology:

The Shimano Octalink Bottom Bracket BB-ES51 boasts a series of advanced features that contribute to a seamless cycling experience. Let's delve into its key characteristics:

  1. Hollow Pipe Spindle: The BB-ES51 incorporates a hollow pipe spindle, providing a perfect balance between strength and weight reduction. This design reduces the overall weight of the bottom bracket without compromising on durability, allowing for efficient power transfer to the drivetrain.

  2. OCTALINK Technology: The innovative OCTALINK spindle ensures a precise and secure fit between the crankset and the bottom bracket. This results in smooth and consistent rotation, reducing friction during pedaling and enhancing overall riding efficiency.

  3. Various Axle Lengths and Shell Widths: The BB-ES51 is available in multiple configurations, offering versatility for different bike setups. Cyclists can choose from axle lengths and shell widths that match their specific needs, whether for double or triple cranksets and different frame types.

  4. Durability and Reliability: Crafted with high-quality materials and precision engineering, the Shimano Octalink Bottom Bracket BB-ES51 is built to withstand the rigors of regular cycling. It ensures consistent performance even in challenging riding conditions.

Versatility to Suit Your Bike Setup:

The Shimano Octalink Bottom Bracket BB-ES51 caters to a wide range of cyclists with various bike configurations. Let's explore some of the available options:

  • For Double Cranksets: The BB-ES51 is available in axle lengths of 113mm and 118mm, with shell widths of 68mm and 73mm (BC1.37 standard). These configurations are ideal for bicycles equipped with double chainrings.

  • For Triple Cranksets: Cyclists with triple chainrings can opt for the BB-ES51 with an axle length of 121mm and a shell width of 70mm (M36 standard). This setup is designed to accommodate the additional gears of a triple crankset.

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 Octalink Bottom Bracket BB-ES51 from Live4Bikes:

  1. Genuine Products: Live4Bikes sources its products directly from reputable manufacturers, ensuring that you will receive a genuine Shimano Octalink Bottom Bracket BB-ES51 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 riders.

  3. Competitive Pricing: Live4Bikes strives to offer competitive prices, providing excellent value for your money.

  4. Outstanding Customer Service: Live4Bikes prides itself on its 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 Octalink Bottom Bracket BB-ES51 is a reliable and versatile component that enhances your cycling experience with smooth power transfer and durability. 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. Invest in the Shimano Octalink Bottom Bracket BB-ES51 from Live4Bikes, and elevate your cycling adventures with optimal performance and versatility.


 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.