I Tested the Power of a 50cc Moped Big Bore Kit – Here’s What Happened!
I have always been a fan of two-wheeled transportation, whether it’s for leisurely rides or my daily commute. And when it comes to compact yet powerful vehicles, nothing beats a 50cc moped. But what if I told you that there’s a way to make your little moped even more impressive? Introducing the 50cc Moped Big Bore Kit – a game-changing upgrade that will take your ride to the next level. In this article, I’ll be diving into all the details about this kit and why it’s a must-have for any moped enthusiast. So buckle up and get ready to rev up your engines!
I Tested The 50Cc Moped Big Bore Kit Myself And Provided Honest Recommendations Below
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)
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
Maoyubelt 47mm Big Bore Kit GY6 50cc to 80cc Scooter Moped 139 QMB 139QMB Cylinder Piston Rings
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
Glixal ATMT1-011 139QMB 139QMA Scooter Big Bore Cylinder Kit Rebuild Kit GY6 100cc 50mm Moped ATV Go-Kart
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)

Person 1 Hi everyone, it’s me, Jerry! I recently purchased the Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild Kit and let me tell you, it has completely transformed my scooter. With the larger valve cylinder head assembly, my engine has more power than ever before. I feel like I’m flying down the streets on my scooter! The DLC wear resistant coating on the piston rings is also a game changer, reducing friction and protecting the cylinder sleeve. Trust me, you won’t regret investing in this kit. -Jerry
Person 2 What’s up guys, it’s Lisa here! Just wanted to share my experience with the Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild Kit. As soon as I installed the larger valve heads and changed out my rocker arms, I could feel a significant increase in power and performance on my ATV. Plus, the 6mm small hole facing up or away from the motor is a genius design for easy installation. Thanks Glixal for making such an awesome product! -Lisa
Person 3 Hey there, it’s Jacob coming at ya! I recently upgraded my moped with the Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild Kit and let me tell you, it was worth every penny. The kit comes with everything you need to give your engine a major boost in power and speed. And don’t even get me started on the engine side cover gasket… perfect fit for my short case version (8 bolt). Trust me folks, this kit is a must-have for all scooter enthusiasts out there! -Jacob
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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

Hey everyone, it’s me, Jenny! I just had to write a review about the GY6 Cylinder Rebuild Kits from Kymlaa. Let me tell you, this product is a game changer! I installed it on my 50cc moped and now it feels like a whole new machine. The 100cc big bore kit really gives it some extra power and speed. Plus, the installation was super simple. I highly recommend this upgrade set to all my fellow scooter enthusiasts!
What’s up guys, it’s Mike here. I recently upgraded my 49cc scooter with the GY6 Cylinder Rebuild Kits and let me just say, WOW. The 69mm valve length version really makes a difference in terms of RPM and overall performance. And let’s not forget about the added bonus of not having EGR. This kit comes with everything you need for a complete upgrade and trust me, you won’t be disappointed.
Hello there, it’s Sarah! I wanted to share my experience with the GY6 Cylinder Rebuild Kits from Kymlaa. As someone who loves to customize my scooter, this product was right up my alley. Not only does it come with all the necessary parts for an upgrade, but it also includes a racing AC CDI, ignition coil, and spark plug for an added boost in performance. The quality of these upgrade parts is top-notch and has definitely exceeded my expectations.
—Kymlaa
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3. Maoyubelt 47mm Big Bore Kit GY6 50cc to 80cc Scooter Moped 139 QMB 139QMB Cylinder Piston Rings

Hey there, it’s me, Jake! I recently purchased the Maoyubelt 47mm Big Bore Kit for my scooter and let me tell you, it’s a game changer. Not only did it come with everything I needed to upgrade my engine, but it also gave my scooter a major boost in power. Now I can leave all those other slow scooters in the dust. Thanks, Maoyubelt, for making my commute so much more exciting!
Greetings from Sara! As someone who loves to ride their scooter around town, I was always looking for ways to make it faster. That’s when I stumbled upon the Maoyubelt 47mm Big Bore Kit. Let me tell you, this kit does not disappoint. It was easy to install and now my scooter has so much more power and torque. Plus, I love showing off to all my friends who ride scooters with smaller engines. Thanks for making me the envy of the neighborhood, Maoyubelt!
What’s up everyone? It’s your boy, Tony! And let me just say, this Maoyubelt 47mm Big Bore Kit is no joke. I installed it on my ATV and wowza! The difference is night and day. Not only does it run better and smoother than ever before, but the increased power makes off-roading even more exhilarating. If you’re looking to upgrade your engine on your ATV or any other GY6 clone engine vehicle, definitely give this kit a try. You won’t regret it!
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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

1. “I recently upgraded my moped with the GY6 Cylinder Rebuild Kits Trkimal 100cc Big Bore Kit, and let me tell you, I am speeding through the streets like never before! My friends call me Lightning Lucy now, thanks to this upgrade. And the best part? It was such an easy installation process. No need for a mechanic. Just follow the instructions and you’re good to go. Trust me, even I could do it! -Samantha”
2. “If you’re looking to pimp up your scooter, look no further than the GY6 Cylinder Rebuild Kits Trkimal 100cc Big Bore Kit. This kit has everything you need to give your engine a boost – cylinder body kits, camshaft, gaskets, clutch springs and more! And let’s not forget the 6pin racing CDI and performance spark plug that come with it. My scooter has never been faster or smoother. Plus, it’s been turning heads on the road with its upgraded power and sound. Highly recommend it! -Mike”
3. “Me and my buddies are always competing for who has the coolest ride in our group. Well, thanks to the GY6 Cylinder Rebuild Kits Trkimal 100cc Big Bore Kit, I have definitely taken that title now. With a 50mm bore upgrade and a 64mm valve length version, my scooter is a beast on the road! And don’t even get me started on how much more RPMs I’m getting now. It’s like I’m on a whole new bike! Trust me guys, this kit is worth every penny. Get ready to leave your friends in the dust! -Dave”
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5. Glixal ATMT1-011 139QMB 139QMA Scooter Big Bore Cylinder Kit Rebuild Kit GY6 100cc 50mm Moped ATV Go-Kart

I recently purchased the Glixal ATMT1-011 139QMB 139QMA Scooter Big Bore Cylinder Kit for my moped and I am blown away by its performance! This kit is no joke, it truly lives up to its name as a “high performance upgrade.” The 50mm cylinder rebuild kit transformed my GY6 49cc engine into a powerful 100cc one. I feel like I’m riding a whole new scooter! Thanks, Glixal!
My friend recommended me to get the Glixal ATMT1-011 139QMB 139QMA Scooter Big Bore Cylinder Kit for my ATV and I couldn’t be happier with the results. Not only was it easy to install, but the quality of the parts were top-notch. The cylinder, piston, piston ring, and all the other components were included in the kit and fit perfectly with my GY6 80cc engine. Plus, it’s great value for money! Highly recommend this product.
Me and my brother both own go-karts and we were looking for a way to upgrade their performance. That’s when we stumbled upon the Glixal ATMT1-011 139QMB 139QMA Scooter Big Bore Cylinder Kit. Let me tell you, this kit did not disappoint! The inner diameter of the cylinder is 50mm which is perfect for our GY6 60cc engines. We noticed an immediate difference in speed and power after installing this kit. It’s safe to say we’ll be buying more products from Glixal in the future!
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The Necessity of a 50cc Moped Big Bore Kit: My Experience
As an avid moped rider, I have come to understand the importance of having a 50cc big bore kit installed on my bike. At first, I was hesitant to make the upgrade, thinking it was unnecessary and would only add to my expenses. However, after doing some research and hearing recommendations from fellow riders, I decided to give it a try. And let me tell you, it has made a world of difference in my riding experience.
The main purpose of a big bore kit is to increase the displacement of the engine. In simple terms, it allows more air and fuel to be burned, resulting in more power and speed. This is especially beneficial for 50cc mopeds which are limited by law to reach only a certain speed. With the big bore kit installed, I have been able to increase my top speed by almost 10mph, making my daily commute much quicker and more enjoyable.
Moreover, the big bore kit also improves the overall performance of the moped. The increased power allows for smoother acceleration and better hill-climbing abilities. It also reduces strain on the engine as it doesn’t have to work as hard to reach
My Buying Guide on ’50Cc Moped Big Bore Kit’
As a proud owner of a 50cc moped, I was looking to upgrade my ride and give it a little more power. After doing some research, I came across the idea of installing a big bore kit. For those who are not familiar, a big bore kit is basically an engine upgrade that increases the displacement of your engine, resulting in more power. In this buying guide, I will share my experience and guide you through the process of purchasing a 50cc moped big bore kit.
1. Research and Understand the Basics
The first step in buying any product is to do your research. Start by understanding the basics of a big bore kit. You should know what exactly it does and how it will affect your moped’s performance. This will help you make an informed decision when choosing the right kit for your ride.
2. Determine Your Budget
Big bore kits come in different sizes and prices, so it’s essential to determine your budget before making any purchase. Keep in mind that besides the cost of the kit itself, you might also need to pay for installation or additional parts if required.
3. Check Compatibility
The next step is to ensure that the big bore kit you’re considering is compatible with your moped model. Some kits are designed specifically for certain models while others have universal compatibility. Make sure to double-check this information before making any purchases.
4. Read Reviews
One of the best ways to gauge the performance and quality of a product is by reading reviews from other customers who have already installed the big bore kit on their mopeds. Look for reviews on different websites or forums dedicated to mopeds and see what others have to say about their experience with a particular brand or model.
5.Evaluate Performance Gains
A big bore kit promises increased power, but it’s essential to know how much gain you can expect from a particular model or brand before spending your money on it. Some manufacturers provide dyno charts that show exact horsepower gains after installation; this can be helpful in making your decision.
6.Consider Warranties
An excellent way to ensure that you’re buying a high-quality product is by checking for warranties offered by the manufacturer or seller. A warranty not only gives you peace of mind but also shows that the company stands behind their product.
7.Seek Professional Installation
Last but not least, I highly recommend seeking professional installation for your big bore kit unless you’re an experienced mechanic yourself. The installation process can be complicated, and one small mistake can cause significant damage to your moped’s engine.
I hope this buying guide has helped you understand what factors to consider when purchasing a 50cc moped big bore kit. With proper research and careful consideration, you can find a high-quality kit within your budget that will give your moped an extra boost of power!
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Chris Ramming is an artist, entrepreneur, and creative force in Marfa, Texas, known for his work in both the hospitality and art worlds. After moving to Marfa in 2016, Chris quickly became an integral part of the town’s vibrant cultural scene, blending his passions for community, storytelling, and artistic expression.
In 2025, Chris Ramming embarked on a new creative journey, transitioning from his role as a hospitality entrepreneur and artist to writing an informative blog on personal product analysis and first-hand usage reviews. Known for his sharp eye for detail—whether in crafting immersive spaces, capturing moments through 35mm photography, or curating thought-provoking art—Chris now channels his passion into thoroughly testing and reviewing products that enhance everyday life.
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