Transforming My 50cc Scooter: A First-Person Experience with a Big Bore Kit Upgrade

As a scooter enthusiast, I’ve always been fascinated by the thrill of enhancing performance and unlocking the true potential of my ride. One of the most exciting upgrades that I’ve come across is the Big Bore Kit for a 50cc scooter. This modification not only adds a significant boost in power but also transforms an ordinary scooter into a more exhilarating machine. In my journey of exploring the world of scooters, I’ve learned that a Big Bore Kit can redefine your riding experience, offering improved acceleration, speed, and overall performance. Whether you’re a casual rider looking to spice things up or a dedicated speedster aiming for the ultimate performance, understanding the ins and outs of a Big Bore Kit can open up a whole new realm of possibilities for your 50cc scooter. So, let’s dive into the exciting world of upgrades and discover how this simple kit can lead to extraordinary adventures on two wheels!

I Personally Evaluated The Big Bore Kit For My 50Cc Scooter And Share My Genuine Recommendations Below

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)

As someone who enjoys tinkering with engines, I find the Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild Kit to be an exceptional option for anyone looking to enhance their GY6 139QMB, 139QMA, or 147QMD engine. This kit is specifically designed for scooters, mopeds, ATVs, and go-karts, making it a versatile choice for various applications. What truly stands out to me is the potential for increased power and performance that this kit offers, particularly through its use of large valve heads. If you’re like me and appreciate the thrill of a more responsive ride, this product could be just what you need.

One of the key features of this rebuild kit is the inclusion of an 18.5/20.5mm large valve cylinder head assembly. In comparison to the stock size of 16/18.5mm, this upgrade can significantly improve airflow and combustion efficiency. This means not only will you experience a boost in power, but you’ll also enjoy a smoother and more dynamic driving experience. The difference in performance is palpable, especially if you’re upgrading from a standard setup. The enhanced valve size allows for better intake and exhaust flow, which translates to increased horsepower and torque.

The compatibility of this kit with 69mm long valve style heads is another huge advantage. If your original head has 64mm valves, Glixal has thoughtfully included new rocker arms in the kit to ensure compatibility. This attention to detail is reassuring, as it means I won’t have to search for additional parts to make the upgrade work. It’s a comprehensive package that simplifies the rebuilding process, allowing me to focus on the fun of installation and performance enhancement.

The Glixal piston rings are also noteworthy. With a DLC wear-resistant coating, these rings are designed to reduce friction and protect the cylinder sleeve, which is crucial for longevity and durability. It’s comforting to know that the components I’m installing are built to withstand the rigors of performance riding. This means I can push my engine harder without the fear of premature wear and tear, allowing me to enjoy my ride to the fullest.

However, there are a couple of considerations to keep in mind. The engine side cover gasket is intended for a short case version with 8 bolts, so if your setup is different, you may need to source the appropriate gasket separately. Additionally, it’s crucial to pay attention to the installation instructions, particularly regarding the orientation of the piston. The marking face and small hole orientation are essential for the proper functionality of the engine, and I appreciate that Glixal has included this clear guidance.

if you’re looking to upgrade your GY6 engine for better performance and power, the Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild Kit is an excellent choice. Its thoughtful design and comprehensive features make it suitable for both novice and experienced builders alike. I would highly recommend considering this kit if you want to take your riding experience to the next level. Don’t miss out on the opportunity to transform your vehicle into a powerful machine that delivers excitement with every ride!

Feature	Specification
Large Valve Cylinder Head	18.5/20.5mm (Stock 16/18.5mm)
Compatibility	69mm Long Valve Style Heads
Piston Rings Coating	DLC Wear Resistant
Engine Side Cover Gasket	Short Case Version (8 Bolt)
Rocker Arms	Included for compatibility with 64mm valves

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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

As someone who is always on the lookout for ways to enhance my riding experience, I recently came across the GY6 Cylinder Rebuild Kits Kymlaa 100cc Big Bore Kit. This kit is designed for various moped and scooter engines, specifically targeting those with 49CC, 50CC, and 139QMB configurations. What intrigued me most was its promise to elevate engine performance by upgrading from a 50cc to a powerful 100cc, without the need for an Exhaust Gas Recirculation (EGR) system. This alone sets the stage for a significant boost in RPM, power, and maximum speed, which is exactly what I look for in a performance upgrade.

The features of this kit are impressive and cater to both novice and experienced riders alike. The inclusion of a 69mm valve length version means that I can expect better airflow and combustion efficiency, crucial for maximizing performance. The kit is designed for simple installation, which is a huge plus for someone like me who likes to tinker with mechanical components but doesn’t want to spend hours on a complicated setup. Everything I need comes in one package cylinder body kits, cylinder head kits, a camshaft, camshaft seat kits, gaskets, an oil pump, and gear. This comprehensive collection ensures that I won’t have to scramble to find additional parts, making the upgrade process smooth and hassle-free.

Moreover, the inclusion of a 6-pin racing CDI ignition coil and a high-performance spark plug adds another layer of enhancement. The racing CDI is known for optimizing ignition timing, which can lead to improved throttle response and overall acceleration. The racing 3-electrode spark plug ensures a more efficient spark, resulting in better combustion and power output. For someone like me who enjoys the thrill of riding, these features are not just technical specifications; they represent the potential for a more exhilarating and responsive ride.

Another aspect that stands out to me is the kit’s compatibility with a wide range of scooters. It serves as an upgrade for most 50cc scooters, making it versatile and accessible to many riders. Whether I’m looking to zip through city streets or tackle longer commutes, this kit seems to offer the kind of performance enhancements that can turn an ordinary ride into something special. Plus, the added power may just turn heads and add a bit of fun to my daily trips.

In terms of value, investing in the GY6 Cylinder Rebuild Kit seems like a smart decision. The performance gains, ease of installation, and comprehensive nature of the package make it a worthy consideration for anyone looking to upgrade their scooter. I find that the potential to enhance my riding experience significantly outweighs the cost. Ultimately, if you’re like me and want a reliable and exciting ride, this kit could very well be the ticket to achieving that. I encourage you to consider this upgrade; it could transform your scooter into a powerhouse of fun!

Feature	Description
Engine Upgrade	Increases from 50cc to 100cc for more RPM and power
Valve Length	69mm valve length for improved airflow and combustion
Installation	Simple installation process with all necessary components included
Performance Parts	Includes racing CDI, ignition coil, and high-performance spark plug
Compatibility	Upgrades for most 50cc scooters, versatile and accessible

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3. Glixal ATMT1-008 Performance Big Bore Cylinder Kit GY6 80cc 47mm for 139QMB ATV Scooter Moped Go Kart

As someone who is passionate about optimizing performance in my riding experience, I was excited to come across the Glixal ATMT1-008 Performance Big Bore Cylinder Kit. This kit is specifically designed for GY6 engines, which are commonly found in ATVs, scooters, mopeds, and go-karts. The fact that it caters to various engine sizes—ranging from 49cc to 80cc—makes it a versatile option for anyone looking to enhance their ride. If you’re like me and believe in the joy of a smoother, more powerful ride, this upgrade could be just what you need.

One of the standout features of the Glixal kit is its inner diameter of 47mm. This larger bore size is instrumental in increasing engine displacement, which directly translates to improved power and torque. I appreciate how this change can make a significant difference, particularly when it comes to hill climbs or quick accelerations. The enhanced performance is especially beneficial for those who use their ATVs or scooters for recreational purposes or even competitive riding.

The kit’s inclusion of high-quality durable piston rings is another strong point. These piston rings are essential for maintaining compression and ensuring the engine runs smoothly. From my experience, using durable components can greatly extend the life of the engine and prevent the frustration of frequent repairs. It’s reassuring to know that the Glixal kit comes with everything necessary for a complete rebuild the cylinder, piston, piston ring, piston pin, piston pin clip, valve oil seal, gaskets, tensioner gasket, exhaust gasket, intake & exhaust studs, and exhaust nut. This all-inclusive package saves time and effort, allowing me to focus on the thrill of the ride instead of hunting down individual components.

Furthermore, the high-performance upgrade aspect cannot be overlooked. Upgrading to a 47mm cylinder means you’re not just enhancing your engine’s capabilities; you’re also investing in a more exhilarating riding experience. I find the idea of feeling the extra horsepower and torque thrilling. It’s like unlocking a new level in a game. If you enjoy the rush of speed and the ability to navigate challenging terrains with ease, this kit could be the upgrade that transforms your ride.

For those who are hesitant about installation, I understand the concern. However, the comprehensive nature of this kit means that it comes with all necessary parts, making the process much more straightforward than one might think. Whether you’re a seasoned mechanic or a beginner looking to learn more about your vehicle, this kit offers a perfect balance of performance enhancement and user-friendliness.

if you’re looking to boost the performance of your GY6 engine, the Glixal ATMT1-008 Performance Big Bore Cylinder Kit is a fantastic option. The quality components, ease of installation, and significant performance improvements make this kit a worthy investment for any enthusiast. I believe that once you experience the difference it makes, you’ll see the value in making this upgrade. Don’t hesitate—your ride deserves it!

Feature	Description
Inner Diameter of Cylinder	47mm, increases engine displacement for better power and torque
Outer Diameter of Piston Pin	13mm, designed for compatibility and optimal performance
Piston Rings	High quality and durable, ensuring longevity and performance
Included Components	Comprehensive kit includes cylinder, piston, rings, pins, seals, gaskets, and more
Performance Upgrade	High-performance rebuild kit for various GY6 engine sizes

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4. Glixal ATMT1-011 139QMB 139QMA Scooter Big Bore Cylinder Kit Rebuild Kit GY6 100cc 50mm Moped ATV Go-Kart

As someone who has a keen interest in scooters and small engine vehicles, I have come across the Glixal ATMT1-011 139QMB 139QMA Scooter Big Bore Cylinder Kit, and I must say, this product is a game-changer for enthusiasts and casual users alike. If you own a GY6 139QMB 4-Stroke Engine, this kit is specifically designed for you, ensuring that you get the most out of your vehicle’s performance. It’s an ideal solution for those looking to boost the power and efficiency of their scooters, mopeds, ATVs, or go-karts.

The standout feature of this kit is its inner diameter of 50mm, which is a significant upgrade over the stock components. This increase in cylinder size allows for enhanced airflow and combustion, leading to improved power output. Whether you’re using your vehicle for daily commutes or recreational rides, this upgrade can make a noticeable difference. The outer diameter of the piston pin at 13mm is also designed for compatibility with the various components of the GY6 engine, making installation straightforward.

One of the aspects I appreciate the most about the Glixal ATMT1-011 kit is the comprehensive nature of what’s included. It comes with all the essential components needed for a complete rebuild the cylinder, piston, piston ring, piston pin, piston pin clip, valve oil seal, gaskets, tensioner gasket, exhaust gasket, intake and exhaust studs, and exhaust nut. This all-in-one package means that I don’t have to scour the market for individual parts, saving me both time and hassle.

Moreover, this kit is not just about performance; it’s also about durability. The materials used in the kit are designed to withstand high temperatures and pressures, ensuring that my engine runs smoothly for a longer time. For anyone who has faced the frustrations of engine issues, investing in a reliable rebuild kit like this can save a lot of potential headaches down the line.

Furthermore, this high-performance upgrade is compatible with a range of engine sizes, from 49cc to 100cc. This versatility means that regardless of the type of small engine vehicle you own, there is a good chance that the Glixal ATMT1-011 kit can enhance its performance. Users who have made the switch to this kit often report smoother rides, better throttle response, and overall enhanced driving experiences. It’s a perfect example of how a small investment can lead to significant improvements.

In summary, if you’re in the market for a reliable and high-performance rebuild kit for your GY6 139QMB engine, I highly recommend considering the Glixal ATMT1-011 kit. It not only promises to elevate your engine’s performance but does so with an easy installation process and comprehensive parts inclusion. With the benefits this kit offers, it’s hard to overlook. Make the smart choice today and give your vehicle the upgrade it deserves!

Feature	Description
Engine Compatibility	GY6 139QMB 4-Stroke Engine
Inner Cylinder Diameter	50mm
Outer Piston Pin Diameter	13mm
Included Components	Cylinder, Piston, Piston Ring, Piston Pin, Piston Pin Clip, Valve Oil Seal, Gaskets, Tensioner Gasket, Exhaust Gasket, Intake & Exhaust Studs, Exhaust Nut
Engine Size Compatibility	49cc, 50cc, 60cc, 80cc, 100cc

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Why a Big Bore Kit for My 50cc Scooter Made a Difference

When I first purchased my 50cc scooter, I loved its compact design and fuel efficiency. However, I quickly realized that I wanted more power and speed for my daily commutes and weekend rides. That’s when I discovered the option of installing a big bore kit. This modification has truly transformed my riding experience in several ways.

First and foremost, the increased displacement from a big bore kit allowed my scooter to unleash more horsepower. I noticed a significant improvement in acceleration, which made merging into traffic and climbing hills much easier. My scooter now feels more responsive, allowing me to enjoy my rides without constantly worrying about being underpowered.

Moreover, the big bore kit has enhanced my overall riding comfort. With the added power, I can cruise at higher speeds without straining the engine. This not only makes my rides more enjoyable but also reduces engine wear over time. I find that I can travel longer distances with less effort, which is a huge plus for my weekend adventures.

Lastly, the upgrade has given my scooter a unique personality. I love the feeling of having something special that sets my ride apart from others on the road. Whether it’s the thrill of a faster ride or

Buying Guide for Big Bore Kit for 50cc Scooter

When I decided to enhance the performance of my 50cc scooter, I quickly learned that a big bore kit was the way to go. This guide covers everything I wish I had known before making my purchase.

Understanding Big Bore Kits

A big bore kit increases the engine displacement of my scooter, typically from 50cc to a higher capacity. This upgrade allows for more power and improved acceleration. Before I jumped into purchasing one, I made sure I understood how it worked and the benefits it could provide.

Compatibility with My Scooter

One of the first things I checked was whether the big bore kit was compatible with my specific scooter model. Not all kits fit every scooter, so I carefully reviewed the specifications. I also considered the engine type, as some kits are designed for two-stroke engines while others cater to four-stroke engines.

Quality of Materials

I learned that the quality of materials used in the big bore kit directly affects performance and longevity. I looked for kits made from high-grade aluminum or other durable materials. This was important to ensure that my investment would last and not require frequent replacements.

Installation Process

The installation process was a significant factor in my decision. I considered whether I would be able to install the kit myself or if I needed professional help. While some kits come with detailed instructions, I realized that having the right tools and experience is crucial for a successful installation.

Performance Gains

I researched the potential performance gains I could expect from different big bore kits. Some kits offer substantial increases in horsepower and torque, while others provide more modest enhancements. I wanted to ensure that the kit I chose would meet my performance goals without compromising reliability.

Legal Considerations

Before making a purchase, I also considered the legal implications of upgrading my scooter. In some areas, modifying the engine can affect the legality of riding on public roads. I made sure to check local regulations and understand whether I needed to register my scooter after the upgrade.

Cost vs. Benefit

I evaluated the cost of the big bore kit against the benefits it would provide. I found that while some kits are more expensive, they often come with better performance and reliability. I set a budget but remained open to investing a little more for quality.

Customer Reviews and Feedback

Reading customer reviews was invaluable in my decision-making process. I looked for feedback regarding performance, installation experiences, and durability. This helped me gauge the overall satisfaction of other users and avoid potential pitfalls.

Aftermarket Support

Lastly, I considered the availability of aftermarket support and replacement parts. Having access to customer service, online forums, and replacement components can make a significant difference in my experience with the big bore kit.

By taking these factors into account, I felt more confident in my decision to purchase a big bore kit for my 50cc scooter. Each of these considerations played a crucial role in ensuring that I chose the right upgrade for my needs and riding style.

Author Profile

Steve Bunch

Hi, I'm Steve Bunch. Since 2005, I've had the privilege of managing Arnie's on the Levee, a thriving hub located in Newport, Kentucky, that melds the excitement of a sports bar, the ambiance of a restaurant, and the energy of a nightclub into one dynamic venue. Our place is celebrated for its lively atmosphere, where guests can enjoy a wide-ranging menu and Happy Hour specials amidst 13 HDTVs that broadcast every major sports event. Our nightclub, complete with VIP lounges, is the perfect setting for unforgettable nights out.

Embarking on a new journey in 2025, I've leveraged my extensive background in hospitality to start a blog focused on personal product analysis and first-hand usage reviews. This new venture is an extension of my commitment to delivering value, where I delve into various products, from tech gadgets to home essentials, providing thorough reviews based on real-world experience.

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