Sunrace 7spd CSM63 11-28T Cassette-live4bikes

Sunrace 7spd CSM63 11-28T Cassette-live4bikes

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 Sunrace 7 Speed CSM63 Cassette: Unleashing the Power of Super Fluid Drive Shift Profiling


Sunrace, a renowned name in the cycling industry, has once again raised the bar with its latest innovation, the Sunrace 7 Speed CSM63 Cassette. Designed to optimize performance and deliver a seamless shifting experience, this cassette is packed with features that cater to both SRAM and Shimano 7-speed drivetrains. In this article, we explore the remarkable attributes of the CSM63, with its Super Fluid Drive shift profiling and sandblast satin finished steel rings, making it a game-changer for cycling enthusiasts worldwide.

Super Fluid Drive Shift Profiling

At the core of the Sunrace CSM63's exceptional performance lies its revolutionary Super Fluid Drive shift profiling. This innovative technology ensures smooth and precise gear transitions, providing cyclists with the confidence to conquer any terrain. The cassette's meticulously engineered ramps and teeth profiling optimize chain engagement, resulting in effortless shifts even under heavy loads. Whether you're climbing steep hills or sprinting on flat roads, the Super Fluid Drive shift profiling guarantees a consistent and reliable gear change experience.

Compatibility with SRAM and Shimano 7-Speed Drivetrains

One of the key advantages of the Sunrace CSM63 is its compatibility with both SRAM and Shimano 7-speed drivetrains. This adaptability makes it an ideal choice for cyclists with different setups, providing them with a versatile and performance-oriented cassette option. Cyclists no longer need to worry about compatibility issues when upgrading or replacing their current cassettes. The Sunrace CSM63 seamlessly integrates with a wide range of bike configurations, ensuring a smooth transition to enhanced shifting performance.

Durable Sandblast Satin Finished Steel Rings

Durability is paramount when it comes to components that endure the rigors of cycling. The Sunrace CSM63 excels in this aspect with its sandblast satin finished steel rings. This construction not only enhances the cassette's longevity but also ensures reliable power transfer and resistance to wear. The sandblast finish provides an extra layer of protection, making the rings resistant to corrosion, extending the life of the cassette in various weather conditions.

Lightweight Design for Enhanced Performance

Weighing in at a mere 248g, the Sunrace CSM63 strikes the perfect balance between durability and lightweight design. This weight optimization contributes to improved overall bike performance, making it an excellent choice for competitive riders and enthusiasts seeking to enhance their cycling experience. The reduced weight allows for easier acceleration and more efficient climbing, translating into a more enjoyable and responsive ride.


In conclusion, the Sunrace 7 Speed CSM63 Cassette is a testament to Sunrace's commitment to innovation and quality in the cycling world. With its Super Fluid Drive shift profiling, compatibility with SRAM and Shimano 7-speed drivetrains, and sandblast satin finished steel rings, this cassette redefines the standards for smooth shifting, reliability, and durability. Whether you are an avid cyclist or a weekend adventurer, the Sunrace CSM63 is an investment that will undoubtedly elevate your cycling performance and allow you to fully embrace the joy of the ride.



 A Comprehensive Guide to Bicycle Cassettes: Finding the Right One for Your Ride

Bicycle cassettes play a crucial role in determining the performance and efficiency of your ride. With various options of bicycle cassettes available in the market, selecting the right cassette can be a daunting task. In this guide, we will explore how to find the perfect bicycle cassettes for your needs, understand the difference between a cassette and freewheel, explore the impact of the number of teeth on gear ratio, and discuss the requirements when converting to a 1x drivetrain.

1. Cassette vs. Freewheel:

Before delving into cassette selection, it's essential to understand the difference between a cassette and a freewheel. Both components are found in the rear wheel hub and consist of a set of sprockets that engage with the bicycle chain. However, a cassette is a separate unit, while a freewheel combines the sprockets with the freewheeling mechanism. Most modern bikes use cassettes due to their improved performance, easier maintenance, and the ability to interchange gear ratios more efficiently.

2. Choosing the Right Cassette:

When selecting a cassette, consider factors such as the terrain you'll be riding on, your fitness level, and your bike's drivetrain compatibility. Cassettes come in various speeds, ranging from 7 to 12 speeds, each offering a different number of sprockets. The more sprockets a cassette has, the narrower the gaps between gears, providing smoother gear transitions.

3. Understanding Gear Ratio and your cassette . 

The gear ratio refers to the relationship between the number of teeth on the front chainring and the rear cassette sprockets. A cassette with a wide range of teeth, such as an 11-32T, provides a broad selection of gears suitable for climbing steep hills and tackling challenging terrains. On the other hand, a narrow range, like an 11-23T, is ideal for flat roads and high-speed riding.

4. Transitioning to a 1x Drivetrain and cassettes 

A 1x drivetrain eliminates the front derailleur and offers a simplified setup with a single front chainring and a wide-range cassette at the rear. When converting to a 1x drivetrain, it's essential to choose the appropriate front chainring size to maintain a suitable gear range. Riders seeking versatility may opt for a larger front chainring, like a 38T or 40T, while those who prioritize climbing and off-road riding might choose a smaller chainring, such as a 30T or 32T. Also keep in mind that adding more teeth to the low gears will have its limits depending on the length of your rear derailleur.  For example a 11-42t cassette will need a long cage derailleur.  There is short , mid and long rear derailleurs. 

Selecting the right bicycle cassette is paramount to enhancing your cycling experience. With an understanding of cassette vs. freewheel distinctions, the impact of the number of teeth on gear ratio, and the requirements for transitioning to a 1x drivetrain, you can make an informed decision. Consider your riding style, terrain, and desired performance to find the perfect cassette that suits your needs. Whether you're a seasoned cyclist or a beginner, having the right cassette can significantly improve your efficiency, comfort, and enjoyment on the road or trail. Happy cycling!