Origin 8 PROPULSION PRO-21416 Bottom Bracket 68 x 118mm - Live4Bikes

Origin 8 PROPULSION PRO-21416 Bottom Bracket 68 x 118mm - Live4Bikes

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 ORIGIN8 Propulsion 68 mm x 118 mm Bottom Bracket: Unleashing the Power of Cycling with Live4Bikes


As avid cyclists, we know that a well-maintained bike is crucial for a smooth and powerful riding experience. Among the essential components, the bottom bracket plays a significant role in ensuring efficient power transfer and smooth rotation of the pedals. One brand that has consistently stood out in the world of bicycle components is ORIGIN8, with their reliable and high-quality products. In this article, we will delve into the ORIGIN8 Propulsion 68 mm x 118 mm Bottom Bracket and explore the reasons why you should consider purchasing it from Live4Bikes.

  1. Precision Engineering for Performance

The ORIGIN8 Propulsion 68 mm x 118 mm Bottom Bracket is designed with precision engineering, utilizing top-grade materials to ensure exceptional performance and longevity. With its 68 mm shell width and 118 mm spindle length, this bottom bracket is versatile, fitting various bike frames and cranksets. Whether you are a road cyclist, a mountain biker, or a casual rider, the ORIGIN8 Propulsion Bottom Bracket is crafted to withstand the demands of your chosen terrain.

  1. Enhanced Power Transfer

The heart of a bike's efficiency lies in the power transfer from the rider's legs to the pedals. A high-quality bottom bracket, like the ORIGIN8 Propulsion, minimizes power loss and maximizes energy transfer, resulting in a more efficient pedal stroke and ultimately a faster ride. This enhanced power transfer can make a significant difference, especially during long rides or challenging terrains.

  1. Durability for Longevity

The ORIGIN8 Propulsion Bottom Bracket is built to withstand the rigors of intense cycling activities. It boasts durable bearings that reduce friction and wear, ensuring a smooth and consistent performance over time. By choosing a reliable and durable bottom bracket, you can save money on frequent replacements and enjoy a more dependable biking experience.

  1. Smooth and Silent Operation

Nothing is more enjoyable than the feeling of a perfectly tuned bike, gliding effortlessly along the road or trail. The ORIGIN8 Propulsion Bottom Bracket's high-quality bearings provide a seamless and noiseless rotation, reducing distractions and allowing you to focus solely on the ride ahead. This smooth operation not only enhances your cycling experience but also minimizes unnecessary wear and tear on other bike components.

  1. Trustworthy Source: Live4Bikes

When purchasing the ORIGIN8 Propulsion 68 mm x 118 mm Bottom Bracket, where you buy it from is just as crucial as the product itself. Live4Bikes has established itself as a reputable and customer-centric bicycle retailer, offering a wide range of top-quality bike components and accessories. Here are a few reasons why purchasing from Live4Bikes is a great choice:

a. Expertise: Live4Bikes is staffed by knowledgeable and passionate cycling enthusiasts who understand the intricacies of bicycle components. They can provide valuable insights and assist you in finding the perfect bottom bracket for your specific needs.

b. Authenticity: Live4Bikes guarantees genuine ORIGIN8 products, ensuring that you receive a reliable and original bottom bracket that lives up to the brand's reputation.

c. Customer Support: Live4Bikes prides itself on exceptional customer service, assisting with any queries or concerns before, during, and after the purchase.

d. Timely Delivery: Live4Bikes understands the importance of timely delivery, ensuring that you receive your ORIGIN8 Propulsion Bottom Bracket promptly.


Investing in the right bottom bracket is essential for unleashing the true potential of your cycling experience. The ORIGIN8 Propulsion 68 mm x 118 mm Bottom Bracket offers precision engineering, enhanced power transfer, durability, and smooth operation. When purchasing this high-quality product, Live4Bikes stands out as the trustworthy and customer-focused supplier that adds value to your biking journey. With the ORIGIN8 Propulsion Bottom Bracket from Live4Bikes, you can elevate your cycling game and enjoy countless memorable rides for years to come.


 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.