Transforming My 50cc Moped: My Expert Experience with a Big Bore Kit Upgrade

When I first got my hands on a 50cc moped, I was thrilled by the idea of zipping around town with ease and efficiency. However, as much as I enjoyed the ride, I couldn’t shake the feeling that there was untapped potential just waiting to be unleashed. That’s when I discovered the fascinating world of big bore kits. These kits promise to transform a humble 50cc engine into a powerful and exhilarating machine, opening up a realm of possibilities for speed and performance. In this article, I’ll take you on a journey through the ins and outs of 50cc moped big bore kits—exploring what they are, how they work, and why they’ve become a must-have for enthusiasts eager to elevate their moped experience. Whether you’re a seasoned rider or just starting out, the allure of increased power and enhanced performance is sure to catch your interest. So, let’s dive into the exciting potential of big bore kits and discover what makes them a game-changer for moped lovers like us!

I Personally Tried Out The 50Cc Moped Big Bore Kit And Here Are My Honest Recommendations

1. Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild Kit with Performance Big Valve Cylinder Head Assy for 139QMB 139QMA 147QMD Engine Scooter Moped ATV Go-Kart (69mm-18.5-20.5mm Larger Valves)

When I first came across the Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild Kit, I was immediately intrigued by its potential to enhance the performance of my scooter or ATV. This kit is specifically designed for engines like the 139QMB, 139QMA, and 147QMD, which are commonly found in scooters, mopeds, and go-karts. For anyone looking to upgrade their ride, this product promises to deliver significant improvements in power and efficiency, making it a worthy consideration.

One of the standout features of this rebuild kit is the inclusion of a performance big valve cylinder head assembly. The larger valves—measuring 69mm with 18.5mm and 20.5mm diameters—allow for better airflow, which is crucial for optimizing engine performance. Better airflow means that your engine can breathe easier, resulting in increased power output and improved throttle response. For those who enjoy the thrill of riding, this can translate into a more exhilarating experience on the road or track.

Moreover, the complete nature of this kit is a significant advantage. It comes with everything needed to perform a comprehensive rebuild, which means I won’t have to worry about sourcing additional components. The convenience of having a one-stop solution cannot be overstated, especially for those who may not have extensive mechanical knowledge. It simplifies the process and allows me to focus on the fun part—revving up my engine and hitting the road!

Another factor that I find appealing is the potential for increased longevity and reliability. By replacing the stock components with high-performance parts, I can mitigate wear and tear on the engine over time. Investing in a rebuild kit like this can save me money in the long run by reducing the frequency of repairs and enhancing the overall lifespan of the engine. This is especially important for those who rely on their scooters or ATVs for daily commuting or recreational activities.

In terms of installation, while some mechanical skills are required, the kit is designed with user-friendliness in mind. The instructional guides available online can be quite helpful, making it accessible even for those who may not be seasoned mechanics. Plus, the satisfaction of completing the installation myself adds an extra layer of enjoyment to the upgrade process.

All things considered, the Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild Kit is an exceptional choice for anyone looking to enhance their scooter or ATV’s performance. The combination of increased power, improved efficiency, and overall reliability makes it a smart investment. If you’re ready to take your ride to the next level, I highly recommend considering this kit. It’s time to unleash the full potential of your engine!

Feature	Description
Compatibility	Designed for 139QMB, 139QMA, and 147QMD engines
Valve Sizes	69mm larger valves (18.5mm and 20.5mm)
Complete Kit	Includes all necessary components for a rebuild
Performance	Improves airflow and power output
Installation	User-friendly with available online guides
Longevity	Enhances engine lifespan and reliability

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2. GY6 Cylinder Rebuild Kits Kymlaa 100cc Big Bore Kit for 69mm Valve 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set with 6pin Racing CDI Ignition Coil Performance Spark Plug Clutch Spring

When I first came across the GY6 Cylinder Rebuild Kits Kymlaa 100cc Big Bore Kit, I was immediately intrigued by the potential this product offers for enhancing the performance of my moped scooter. This kit is specifically designed for 49CC and 50CC engines, allowing users like me to upgrade our scooters to a powerful 100CC configuration. The idea of transforming my standard scooter into a more robust machine that can achieve higher RPMs and maximum speeds is incredibly appealing.

The standout feature of this kit is its capability to upgrade engines without EGR (Exhaust Gas Recirculation). This design choice not only simplifies the installation process but also contributes to better performance by reducing exhaust restrictions. The 69mm valve length version is particularly noteworthy, as it allows for increased airflow, further enhancing engine efficiency and power output. If you’re like me and love the thrill of speed, this upgrade can significantly elevate your riding experience.

One of the aspects that I truly appreciate is the simplicity of installation. The kit comes with everything needed for a comprehensive upgrade, including the cylinder body kits, cylinder head kits, camshaft, camshaft seat kits, gaskets kits, oil pump and gear, spring sets, and copper roller sets. This means that even if I’m not a professional mechanic, I can still tackle the installation myself with some basic tools and guidance. The inclusion of a 6-pin racing AC CDI ignition coil and a racing 3-electrode spark plug means that I’ll not only get a performance boost, but also more reliable ignition and better fuel efficiency.

Moreover, the clutch spring included in the kit is a fantastic addition. It helps to optimize the engagement of the clutch, ensuring that power transfer is smooth and efficient. This translates into better acceleration and a more exhilarating ride. I can only imagine the joy of feeling that burst of power as I twist the throttle, making this upgrade a worthwhile investment for any scooter enthusiast.

For those who own a 50cc scooter, this upgrade is an opportunity that shouldn’t be missed. The GY6 Cylinder Rebuild Kit addresses the limitations of smaller engines and provides a gateway to a more thrilling riding experience. Whether it’s for daily commuting or weekend joyrides, this kit can breathe new life into my scooter, making every ride more enjoyable.

In conclusion, I find the GY6 Cylinder Rebuild Kit to be an exceptional product for anyone looking to enhance their scooter’s performance. The combination of quality components, ease of installation, and the promise of increased power and speed makes it a compelling choice. If you’re considering an upgrade, I encourage you to take the plunge—your scooter deserves the best, and this kit could be the game-changer you’re looking for.

Feature	Description
Engine Upgrade	Upgrades 50cc, 60cc, and 80cc engines to 100cc for increased RPM and speed.
Installation	Simple installation with all necessary components included.
Performance Components	Includes cylinder body, cylinder head, camshaft, gaskets, oil pump, and more.
Ignition System	Features a 6-pin racing AC CDI and a racing 3-electrode spark plug for better performance.
Clutch Spring	Optimizes power transfer and enhances acceleration.

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3. Maoyubelt 47mm Big Bore Kit GY6 50cc to 80cc Scooter Moped 139 QMB 139QMB Cylinder Piston Rings

When I came across the Maoyubelt 47mm Big Bore Kit, I was genuinely intrigued by its potential to transform my 50cc scooter or moped into a more powerful machine. For anyone who has experienced the frustration of limited speed and torque on smaller engines, this product promises a significant upgrade. The transition from a 50cc to an 80cc engine through this kit is not just about increasing displacement; it’s about unlocking the true performance potential of your ride.

The kit comes with everything you need for installation a cylinder block, piston, complete ring set, circlips, piston pin, head gaskets, and valve oil seals. This all-in-one package ensures that I won’t have to go hunting for additional parts or tools, which is a huge plus for someone like me who appreciates convenience. The 47mm diameter of the cylinder is a perfect fit for various GY6 engine clones, including the popular 139QMB model. This versatility allows users like me to enhance a wide range of scooters, go-karts, ATVs, and even dune buggies without worrying about compatibility.

One of the standout features of this Big Bore Kit is its ability to significantly improve power and torque. With this upgrade, I can feel the difference in acceleration and hill-climbing capabilities. The added power translates to a more exhilarating ride, whether I’m commuting to work or just enjoying a weekend joyride. It’s not just about speed; it’s about the enjoyment and confidence that comes with knowing my vehicle can handle more demanding situations effortlessly.

The Maoyubelt Big Bore Kit is designed for individuals who want to take control of their riding experience. This kit is particularly appealing to those who own scooters or ATVs from brands like YERFDOG, SUNL, SYM, PGO, KYMCO, VENTO, STRADA, ROKETA, FUJI, WILDFIRE, and KAZUMA. If you have a compatible model, you are in for a treat! This upgrade can rejuvenate your machine and provide a new lease on life, making it more fun and engaging to ride.

While considering the purchase of the Maoyubelt 47mm Big Bore Kit, it’s essential to think about the long-term benefits. Investing in this kit means I can significantly improve my vehicle’s performance, leading to a more enjoyable riding experience. Imagine cruising down the road, feeling the rush of wind, and knowing that your machine has the power to go the distance. It’s hard not to feel excited about that prospect!

In conclusion, if you’re someone like me who values performance and excitement in riding, the Maoyubelt 47mm Big Bore Kit is an excellent investment. It’s not just an upgrade; it’s an enhancement to my lifestyle and riding experience. I can confidently recommend this product to anyone looking to elevate their scooter or moped’s capabilities. Don’t miss out on the chance to feel the power at your fingertips – take the plunge and transform your ride today!

Feature	Description
Cylinder Block	High-quality construction for durability and performance.
Piston	Designed for optimal fit and performance with the cylinder block.
Complete Ring Set	Ensures a tight seal and efficient engine operation.
Cirq Clips	Two included for securing the piston pin effectively.
Piston Pin	Essential for connecting the piston to the crankshaft.
Head Gasket Set	Two gaskets included to prevent leaks and maintain compression.
Valve Oil Seals	Two seals to ensure proper lubrication and prevent oil leaks.
Diameter	47mm (with 53.2mm potential for other applications).
Compatibility	Fits various GY6 engine clones and models including scooters and ATVs.

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4. GY6 Cylinder Rebuild Kits Trkimal 100cc Big Bore Kit for 64mm Valve 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set with 6pin Racing CDI Ignition Coil Performance Spark Plug Clutch Spring

As someone who is passionate about scooters and the thrill of optimizing performance, I couldn’t help but feel excited when I came across the GY6 Cylinder Rebuild Kits Trkimal 100cc Big Bore Kit. This is not just any upgrade; it’s a comprehensive performance enhancement that can take your 49CC or 50CC moped scooter from a modest engine to a powerful 100CC powerhouse. For anyone looking to enhance their riding experience, this product could be a game-changer.

The standout feature of this kit is its ability to boost your scooter’s engine size from 50cc to 100cc. This means more RPM, increased power, and a faster maximum speed. Imagine zipping around town with that extra power at your disposal! Whether you’re commuting or just enjoying a leisurely ride, the additional speed and acceleration can transform your daily trips into exhilarating adventures.

Installation is made easy with this kit, which is a significant advantage for both seasoned mechanics and DIY enthusiasts alike. The package includes everything you need the cylinder body kits, cylinder head kits, camshaft, camshaft seat kits, gaskets kits, oil pump and gear, clutch spring sets, copper roller sets, and even a 6-pin racing AC CDI ignition coil. The inclusion of a racing 3-electrode spark plug is a thoughtful addition that ensures your scooter ignites efficiently and performs at its best. This makes the upgrade process straightforward and accessible, reducing the potential for frustration.

What’s more, this kit is designed to be compatible with most 50cc scooters, which opens the door for a wide range of users looking to boost their machines. Whether you ride a moped, scooter, or any other vehicle powered by the GY6 engine, you can enjoy the benefits of this upgrade. It’s perfect for those who are not only seeking more speed but also want to enhance the overall performance and longevity of their engine.

When considering this product, I also appreciate the thoughtful engineering behind the design. The 64mm valve length version ensures that the airflow is optimized for performance, allowing for a smoother and more efficient operation. Additionally, the clutch spring sets are designed to handle the increased power, ensuring that your scooter can handle the new demands without any issues.

In conclusion, if you’re looking to enhance your riding experience and unleash the full potential of your scooter, the GY6 Cylinder Rebuild Kits Trkimal 100cc Big Bore Kit is an excellent investment. The combination of increased power, ease of installation, and comprehensive parts make this a must-have for anyone serious about performance upgrades. I genuinely believe that this kit will not only improve your scooter’s capabilities but also enhance your enjoyment on the road. Don’t miss out on the opportunity to transform your ride—consider making this upgrade today!

Feature	Description
Engine Upgrade	Transforms 49CC/50CC engines to 100CC for higher RPM and speed.
Easy Installation	Comprehensive kit includes all necessary components for a hassle-free setup.
Performance Parts Included	Includes cylinder body, cylinder head, camshaft, gaskets, oil pump, and clutch springs.
Compatibility	Designed to fit most 50cc scooters with GY6 engines.
Enhanced Ignition	Comes with a 6-pin racing AC CDI and a racing spark plug for optimal performance.

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Why a 50cc Moped Big Bore Kit is a Game Changer for Me

As someone who has always loved the thrill of riding my 50cc moped, I found myself wanting more power and performance without having to invest in a completely new bike. That’s when I discovered the benefits of a big bore kit. By upgrading to a big bore kit, I’ve experienced a noticeable boost in my moped’s performance, which has transformed my daily rides into an exhilarating experience. The added displacement not only increases my top speed but also improves acceleration, allowing me to navigate through traffic with ease.

One of the most significant advantages I’ve noticed is the enhanced torque. With the big bore kit installed, my moped can climb hills and tackle inclines effortlessly, something that was a struggle before. This improvement has made my commutes much more enjoyable and less stressful. I also appreciate the customization aspect; I can tailor my moped to suit my riding style and preferences, making it feel uniquely mine.

Moreover, the installation process was straightforward, and the satisfaction I felt after completing the upgrade was immense. Not only did I enhance my riding experience, but I also gained a deeper understanding of my moped’s mechanics. Overall, investing in a 50cc

Buying Guide for 50Cc Moped Big Bore Kit

Understanding the Big Bore Kit

When I first considered upgrading my 50cc moped, the concept of a big bore kit intrigued me. A big bore kit essentially increases the displacement of my moped’s engine, allowing for greater power and torque. This means I could enjoy improved acceleration and potentially higher top speeds. I realized that understanding the benefits and components of a big bore kit was crucial before making a purchase.

Benefits of Upgrading

The primary reason I wanted to invest in a big bore kit was to enhance my riding experience. With the added power, I noticed that my moped could handle inclines better, and I felt more confident merging into traffic. Additionally, I appreciated the potential for improved fuel efficiency, as a well-tuned engine can consume fuel more effectively. Ultimately, I found that the upgrade could transform my moped from a basic commuter into a more enjoyable ride.

Components to Consider

As I researched, I discovered that a typical big bore kit includes several essential components. The cylinder and piston are the main pieces, but I also needed to consider other parts such as gaskets, a carburetor, and possibly an upgraded exhaust system. Each of these elements plays a role in ensuring the increased displacement works harmoniously with my moped’s existing components.

Compatibility with My Moped

Before making any decisions, I made sure to check the compatibility of the big bore kit with my specific moped model. I learned that not all kits fit every bike, and choosing the right one was crucial to avoid any installation headaches. I consulted the manufacturer’s specifications and even reached out to forums for advice from fellow riders who had done similar upgrades.

Installation Process

I found that the installation process could be a bit daunting, but it was manageable with the right tools and guidance. I considered whether I wanted to attempt the installation myself or if I would prefer to take my moped to a professional mechanic. Watching tutorial videos and reading step-by-step guides helped me feel more confident about the process, but I also recognized the value of having an experienced hand if needed.

Legal Considerations

One important aspect I had to keep in mind was the legal implications of modifying my moped. Depending on where I lived, there could be restrictions on engine modifications. I made sure to research local laws regarding moped modifications to ensure that my upgrades would keep me within legal limits and avoid any potential fines.

Budgeting for the Upgrade

I quickly realized that my budget would play a significant role in my decision-making. Big bore kits can vary significantly in price based on quality and brand. I also needed to factor in any additional costs for installation, tools, or other necessary components. Setting a budget helped me narrow down my options and focus on what was realistically achievable.

Final Thoughts

Ultimately, investing in a 50cc moped big bore kit can be a rewarding experience. As I weighed the pros and cons, I felt excited about the potential improvements to my moped’s performance. By doing thorough research and carefully considering all aspects, I felt confident that I could make a well-informed decision that would enhance my riding experience for years to come.

Author Profile

Jessica Lee

Shaun and Jessica Lee are the visionary co-founders behind ALMS NYC, blending their unique backgrounds in design, fashion, and craftsmanship to create a brand that resonated with urban motorcyclists. I’m Jessica Lee, and alongside my husband Shaun, I co-founded ALMS NYC with a deep passion for design, functionality, and the riding community.

Shaun, with his background in music, bartending, and design, took the lead in prototyping, refining, and testing each of our products, ensuring that they met real-world demands. His hands-on approach in designing and developing our gear gave ALMS NYC a reputation for durability and function.

Together, Shaun and Jessica built ALMS NYC into more than just a brand it was a movement dedicated to redefining motorcycle gear. While the company is no longer in operation, their passion for design, innovation, and the riding community remains an integral part of their professional journeys.

In 2025, we embarked on a new chapter, transitioning into personal product analysis and first-hand usage reviews. Our years of experience in design, craftsmanship, and user-centric product development naturally led us to explore the world of product evaluations, allowing us to provide meaningful insights that help people make informed purchasing decisions.

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