Shimano Saint RapidFire Plus Shift Lever with I-SPEC B -Live4Bikes
Shimano Saint RapidFire Plus Shift Lever with I-SPEC B -Live4Bikes

Shimano Saint RapidFire Plus Shift Lever with I-SPEC B -Live4Bikes

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Shimano Saint RapidFire Plus Shift Lever with I-SPEC B

 Compatibility: MTB 10-speed (right side only)
Weight:SL-M820 Right: 123g SL-M820-B-I Right: 114g


The SHIMANO SAINT RAPIDFIRE Plus Shift Lever with I-SPEC B integration stands as a pinnacle in downhill (DH) racing technology, boasting DH race-proven ergonomics and quick-shifting capabilities. Crafted for the most aggressive riding conditions, this shift lever incorporates a winning combination of a long lever and low friction Multi bearings, ensuring riders experience seamless and efficient gear transitions. The integration of SHIMANO's I-SPEC B design not only enhances the lever's functionality but also contributes to a cleaner and lighter handlebar setup, meeting the demands of discerning riders.

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  1. DH Race Proven Ergonomics: The shift lever is designed with ergonomics that have been proven in downhill (DH) racing, providing riders with confidence and control in aggressive riding conditions.

  2. Quick Shifting with Low Friction Multi Bearings: The combination of a long lever and low friction Multi bearings ensures smooth and efficient shifting, allowing riders to navigate through gears rapidly.

  3. I-SPEC B Integration: The I-SPEC B shift lever design contributes to a cleaner and lighter handlebar setup, enhancing the overall aesthetics and functionality of the cockpit.

  4. Low Effort Longer Lever: The shift lever features a long lever design, promoting low-effort shifting and making it easier for riders to change gears, particularly in demanding situations.

  5. DH Race Proven Antiskid Ergonomics: The antiskid ergonomics provide a secure grip, ensuring that riders can maintain control over the bike, even in challenging downhill race scenarios.

  6. Vivid Index Feeling: The shift lever offers a vivid index feeling, providing tactile feedback during gear changes. This feature enhances awareness for the rider, allowing them to feel and confirm shifts.

  7. Advanced Shifting Technologies:

    • INSTANT RELEASE: Enables rapid shifts by releasing the cable immediately upon actuation.
    • MULTI RELEASE: Allows multiple gears to be shifted with a single lever push, enhancing versatility in gear changes.
    • 2-WAY RELEASE: Provides the option for riders to shift using either the thumb or index finger, accommodating different rider preferences.
  8. MTB 10-Speed Right Side Only: Specifically designed for mountain biking, the shift lever is compatible with 10-speed drivetrains and is available for the right side only.


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Equipped with advanced shifting technologies such as INSTANT RELEASE, MULTI RELEASE, and 2-WAY RELEASE, this shift lever adapts to various riding styles and preferences. Tailored for mountain biking, it is designed exclusively for 10-speed drivetrains on the right side, showcasing a commitment to precision and performance. With a focus on durability and a weight-conscious approach, the SAINT RAPIDFIRE Plus Shift Lever is a top-tier choice for riders seeking a competitive edge in DH racing.

Shifter types
Install Info
Upgrade info
Why Us

Shifter Types


A Guide to Bicycle Shifters: Matching Types with Bike Styles

A Guide to Bicycle Shifters: Matching Types with Bike Styles


Bicycle shifters play a crucial role in controlling the gears, allowing cyclists to adapt to various terrains and riding conditions. Choosing the right type of shifter for your bike can enhance your cycling experience. In this article, we'll explore the different types of bicycle shifters and match them to the appropriate bicycle types.

1. Twist Shifters:

Description: Twist shifters are popular for their intuitive design, where the rider twists a grip to change gears.

Best Match: Twist shifters are commonly found on hybrid bikes and comfort bikes. Their straightforward operation makes them ideal for casual riders and those who prefer a relaxed, upright riding position.

2. Trigger Shifters:

Description: Trigger shifters are operated by pressing levers with your thumb or index finger to shift gears, providing precise control.

Best Match: Mountain bikes often feature trigger shifters due to their accuracy and rapid gear changes, essential for navigating varying off-road terrains.

3. Bar-End Shifters:

Description: Bar-end shifters are mounted at the ends of handlebars, requiring a distinct hand movement to shift gears.

Best Match: Touring bikes and road bikes frequently use bar-end shifters. They offer a classic, clean look and are favored by long-distance riders.

4. Integrated Brake/Shift Levers (STI/Ergo):

Description: These shifters combine the braking and shifting functions into a single unit, providing a seamless and efficient operation.

Best Match: Road bikes, especially those used in competitive cycling, commonly feature integrated brake/shift levers for quick gear changes while maintaining control and aerodynamics.

5. Thumb Shifters:

Description: Thumb shifters are mounted on the handlebars, allowing riders to shift gears by pushing or pulling levers with their thumbs.

Best Match: Vintage or retro-style bikes often use thumb shifters, appealing to riders seeking a classic aesthetic with a reliable shifting mechanism.

6. Electronic Shifters:

Description: Electronic shifters use electronic signals to change gears, offering precise and lightning-fast shifts with minimal effort.

Best Match: High-end road bikes and some mountain bikes adopt electronic shifters for their cutting-edge technology, providing a performance edge and customization options.


Selecting the right shifter for your bicycle involves considering your riding style, preferences, and the type of terrain you'll be tackling. Whether you're cruising on a hybrid bike, navigating trails on a mountain bike, or racing on a sleek road bike, matching the appropriate shifter to your bike type ensures a smoother and more enjoyable ride.


Install Tips


Bicycle Shifter Installation Guide: Tips and Considerations

Bicycle Shifter Installation Guide: Tips and Considerations


Installing new bicycle shifters can significantly enhance your riding experience, providing smoother gear changes and improved control. In this guide, we'll walk you through the general installation process and highlight crucial considerations to ensure a successful setup.

1. Gather Your Tools:

Before you begin, make sure you have the necessary tools, including screwdrivers, Allen wrenches, and cable cutters. A bike stand can also be helpful for stability during the installation.

2. Remove Old Shifters:

If you're replacing existing shifters, start by removing the old ones. Use appropriate tools to loosen and remove any clamps or fasteners holding the shifters in place.

3. Check Compatibility:

Ensure that the new shifters are compatible with your bike's drivetrain. Match the number of gears in the cassette or freewheel to the number of gears on the shifter. This step is crucial for optimal performance and smooth gear changes.

4. Cable Installation:

Thread the shift cables through the cable housings, making sure they are properly seated in the shifters. Trim excess cable length, leaving enough for adjustments but avoiding unnecessary clutter.

5. Set Tension and Indexing:

Adjust the cable tension using the barrel adjusters on the shifters. Proper tension ensures crisp and accurate shifting. Additionally, set the indexing to align the gears properly. Follow the manufacturer's instructions for your specific shifters.

6. Test Shifting:

Before finalizing the installation, take your bike for a short test ride. Shift through all gears to ensure smooth transitions. Make any necessary adjustments to cable tension or indexing as needed.

7. Compatibility Note:

It's essential to note that Shimano and SRAM shifters are not compatible due to differences in their cable pull ratios. Ensure that the shifters you choose match the brand of your derailleurs and other drivetrain components.


By following these general guidelines and considering compatibility factors, you can successfully install new bicycle shifters and enjoy an improved riding experience. Regular maintenance and adjustments will help keep your shifting system in top condition for many miles to come.


Upgrading tips


Upgrading Gears on Your Bicycle: The Importance of Matching Components

Upgrading Gears on Your Bicycle: The Importance of Matching Components


Upgrading the number of gears on your bicycle can enhance your riding experience, providing a wider range of options for various terrains. However, it's crucial to understand that a gear upgrade involves more than just changing the shifters. In this guide, we'll explore why all components need to match when upgrading to more gears.

1. Shifter Compatibility:

When upgrading to more gears, the first component to consider is the shifter. Ensure that the new shifter is compatible with the rest of your drivetrain components, including the front crank, chain rings, chain, and rear cassette or freewheel.

2. Chain and Front Crank:

Upgrading to more gears often requires a new chain and front crank or chain rings. The chain must match the number of gears on the cassette or freewheel, and the front crank should have the corresponding number of chain rings.

3. Chain Compatibility:

Choosing the right chain is crucial for smooth and reliable shifting. Match the chain to the number of gears on both the front crank and rear cassette or freewheel. Using an incompatible chain can lead to poor performance and accelerated wear.

4. Rear Cassette or Freewheel:

Upgrading gears often involves replacing the rear cassette or freewheel. Ensure that the new one matches the number of speeds specified by the shifter and other components in your drivetrain.

5. Comprehensive Group Set Upgrade:

To achieve optimal performance, consider upgrading your entire group set. A comprehensive upgrade includes matching shifters, front and rear derailleurs, chain rings, chain, and the cassette or freewheel. This ensures a harmonious system that works seamlessly together.


When upgrading to more gears on your bicycle, it's essential to recognize that all components within the drivetrain must match. This includes the shifter, chain, front crank or chain rings, and the rear cassette or freewheel. A comprehensive group set upgrade ensures smooth and efficient gear changes, providing a more enjoyable and reliable riding experience.


Why choose Live 4 bikes


Discovering the Story of Live 4 Bikes Bike Shop

Discovering the Story of Live 4 Bikes Bike Shop


Welcome to Live 4 Bikes, where our passion for cycling and commitment to customer satisfaction have shaped our journey. As a small business, our story is one of dedication, personalized service, and a genuine desire to help riders save time and money with their online orders.

Our History:

Live 4 Bikes was founded with a simple yet powerful vision: to create a space where cyclists, whether beginners or seasoned riders, could find quality products and expert advice. Over the years, our dedication to this vision has fueled our growth, and today, we proudly serve the cycling community with a range of top-notch products and services.

Our Mission:

At Live 4 Bikes, our mission extends beyond just selling bikes and accessories. We are here to help our customers save time and money with their online orders by ensuring they get the correct part the first time. We understand the frustration of receiving the wrong item, and our goal is to eliminate that hassle for our valued customers.

Why Choose Live 4 Bikes:

As a small business, we value every customer and strive to earn your trust and business. Our team is passionate about cycling, and we bring that enthusiasm to our commitment to excellent customer service. When you choose Live 4 Bikes, you're not just a customer; you're a part of our cycling community.

Personalized Service:

We take pride in offering personalized service to every customer. Whether you're a seasoned cyclist or a beginner, our knowledgeable staff is here to assist you in finding the right products for your needs. We go the extra mile to ensure you have a positive and enjoyable shopping experience.


Live 4 Bikes is more than just a bike shop; it's a community of passionate cyclists dedicated to providing exceptional service. Our history is built on a foundation of commitment, and our mission is to make your cycling experience seamless. We invite you to explore our offerings, and we look forward to earning your trust and business.