Alloy Left Crank Arm 170mm Square Taper JIS Black - Live4Bikes
Alloy Left Crank Arm 170mm Square Taper JIS Black - Live4Bikes

Alloy Left Crank Arm 170mm Square Taper JIS Black - Live4Bikes

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Unveiling the Power of Precision: The Alloy Left Crank Arm 170mm Square Taper JIS Design in Black


For cycling enthusiasts, the devil is in the details, and one such crucial detail is the crank arm. The Alloy Left Crank Arm, measuring 170mm with a Square Taper JIS Design in Black, is more than just a component; it's a testament to precision and performance. In this article, we explore the intricacies of this versatile crank arm and why purchasing it from Live4Bikes is a smart choice.

Unlocking the Features of the Alloy Left Crank Arm 170mm Square Taper JIS Design in Black:

  1. Length Matters: The 170mm length of this crank arm is carefully calibrated to enhance your cycling experience. It provides the ideal balance between pedal stroke efficiency and comfort, making your rides more enjoyable.

  2. Spindle Type - Square Taper JIS: The Square Taper JIS spindle type is a proven choice among cyclists for its reliability and ease of installation. It ensures compatibility with various bottom brackets, simplifying your maintenance and upgrade processes.

  3. JIS Design: The Japanese Industrial Standard (JIS) design is synonymous with precision and uniformity. Opting for a crank arm with this design guarantees compatibility with other JIS components, facilitating seamless integration into your bike setup.

  4. Size - Left Arm: Designed exclusively for the left side of your bicycle, this crank arm is perfectly tailored to its intended purpose. This specialization helps maintain balance and optimize your bike's performance.

  5. Material - Alloy: Constructed from alloy material, this crank arm strikes a balance between lightweight construction and durability. Alloy is renowned for its excellent strength-to-weight ratio, making it a top choice for components subjected to the rigors of cycling.

  6. Elegant Black Finish: The black finish not only lends a touch of elegance to your bike but also offers an extra layer of protection against rust and corrosion. Your bike will not only perform flawlessly but also look sleek and stylish.

Why Choose Live4Bikes:

  1. Quality Guarantee: Live4Bikes is dedicated to offering only the highest quality products. The Alloy Left Crank Arm 170mm Square Taper JIS Design in Black is rigorously tested to ensure durability and top-notch performance.

  2. Wide Selection: Live4Bikes boasts a wide range of bicycle components, accessories, and gear. This diverse selection ensures you can find the perfect components that match your specific needs and personal style.

  3. Expert Guidance: The Live4Bikes team consists of passionate cyclists and outdoor enthusiasts who can provide expert advice. Whether you're a seasoned rider or a newcomer, their knowledge and support will help you make informed decisions.

  4. Outstanding Customer Service: Live4Bikes takes pride in delivering exceptional customer service. Your purchase experience will be hassle-free, and they are always ready to address any questions or concerns.

In conclusion, the Alloy Left Crank Arm 170mm Square Taper JIS Design in Black is an essential component for dedicated cyclists seeking optimal performance and style. Choosing to purchase this crank arm from Live4Bikes not only grants you access to a top-tier product but also ensures you benefit from their commitment to customer satisfaction, expertise, and a wide range of biking accessories. Elevate your biking experience and empower your ride by selecting the Alloy Left Crank Arm from Live4Bikes.

Understanding Cranks and Bottom Brackets: A Comprehensive Guide

When it comes to optimizing the performance of your bicycle, choosing the right cranks and bottom bracket is paramount. These components play a crucial role in power transmission and overall efficiency. In this guide, we'll explore the various types of cranks and bottom brackets available, and provide insights on how to select the perfect combination for your specific bike.

 Types of Cranks

 1. Square Taper

The square taper is one of the earliest designs and is characterized by a square-shaped interface between the crank arm and the bottom bracket spindle. It's a robust and reliable system, commonly found on older bikes. While it may lack some of the modern refinements, it remains a popular choice for many enthusiasts.

 2. Octalink

Introduced by Shimano, the Octalink system features eight splines on the crank arm that engage with corresponding splines on the bottom bracket spindle. This design provides a more secure connection and improved power transfer compared to square taper designs.

 3. Hollowtech II

Hollowtech II cranks, also from Shimano, utilize a two-piece design with an external bottom bracket. This design reduces weight and enhances stiffness, resulting in improved power transfer and efficiency. They are widely used in modern high-performance bikes.

4. ISIS Drive

ISIS (International Splined Interface Standard) Drive cranks feature a 10-spline interface, providing a large contact area between the crank arm and spindle. This design offers excellent stiffness and is commonly found on mountain bikes.

 5. **BB30 and PressFit 30

BB30 and PressFit 30 bottom brackets have larger bearings and a larger spindle diameter than standard designs. This reduces weight and increases stiffness, providing enhanced power transfer. They are popular choices for high-end road and mountain bikes.

Types of Bottom Brackets

1. Threaded (BSC)

Threaded bottom brackets are the traditional type, screwing directly into the frame's threaded shell. They are reliable and easy to install, making them a popular choice for a wide range of bikes.

2. PressFit

PressFit bottom brackets are pressed directly into the frame, eliminating the need for threads. This design allows for a larger diameter spindle, resulting in increased stiffness and weight savings.
 3. T47

T47 is a newer standard that combines the benefits of threaded and PressFit designs. It utilizes a threaded shell but with a larger diameter, allowing for larger bearings and improved stiffness.

Choosing the Right Combination

Selecting the correct cranks and bottom bracket depends on various factors:

1. Frame Compatibility

Ensure the bottom bracket is compatible with your frame. Different frames have specific bottom bracket shell widths and threading standards.

 2. Crankset Type

Choose a crankset that matches your riding style. For example, if you're into high-performance road cycling, a lightweight, stiff crankset like Hollowtech II might be ideal.

 3. Budget and Weight Considerations

Higher-end materials and designs often come at a premium. Consider your budget and whether shaving off a few grams is critical for your riding goals.

4. Maintenance and Durability

Consider the maintenance requirements and durability of the chosen system. Some designs may require more attention and servicing than others.

Selecting the right cranks and bottom bracket for your bike is a crucial step towards optimizing performance. Understanding the various types and their benefits will help you make an informed decision. Always consult with a professional or refer to the manufacturer's recommendations for compatibility and installation guidelines. With the right combination, you'll experience a smoother, more efficient ride, whether you're cruising on the road or tackling rugged trails.

Removing a crankset from a bicycle involves a few steps and requires specific tools. Here's a general guide on how to do it:

Tools Needed:
1. Crank puller tool
2. Allen wrench or wrench (for some models)
3. Adjustable wrench (if needed)


1. Prepare Your Workspace:
- Find a clean, well-lit area to work.
- Make sure you have enough space to maneuver around the bike.
- Consider placing a towel or mat underneath to catch any small parts that might fall.

2. Shift the Gears:
- Shift the chain onto the smallest chainring and smallest rear cog. This relieves tension on the chain, making it easier to work.

3. Remove the Crank Bolts:
- Use an Allen wrench or wrench (depending on your crankset) to remove the bolts securing the crank arms to the spindle. These are typically located on the non-drive side.

4. Install the Crank Puller:
- Take your crank puller tool and thread it into the crank arm that you want to remove. Make sure it's screwed in securely but not so tight that it damages the threads.

5. Use the Crank Puller:
- Turn the handle of the crank puller clockwise. This will push against the spindle, gradually pulling the crank arm off. If it's difficult to turn, make sure you've threaded the tool in correctly.

6. Repeat for the Other Side:
- Move to the other side of the bike and repeat steps 3-5.

7. Remove the Crank Arms:
- Once the crank arms are pulled off, they should slide easily off the spindle. Be careful not to drop them.

8. Clean and Inspect:
- Take this opportunity to clean the crank arms and the bottom bracket area. Inspect the bottom bracket and spindle for any signs of wear or damage.

9. Reassembly (if necessary):
- If you're replacing the crankset, follow the reverse steps to install the new one. Make sure to properly torque the bolts to the manufacturer's specifications.

Remember, if you're unsure about any step or if your bike has unique components, it's always best to consult the specific manual for your bicycle or seek assistance from a professional at a bike shop. Additionally, having the right tools is crucial for this job, so make sure you're using the appropriate crank puller for your specific crankset.