I Tested the Power-Packed 440 Big Bore Kit for My 400Ex ATV: Here’s What You Need to Know!
I remember the first time I heard about the 440 Big Bore Kit for the 400Ex. As an avid ATV enthusiast, I was immediately intrigued by the idea of increasing the power and performance of my ride. After doing some research and talking to fellow riders, I quickly realized that this kit was much more than just a simple upgrade – it was a game-changer. In this article, I’ll be diving into everything you need to know about the 440 Big Bore Kit for the 400Ex and why it’s become a must-have for serious ATV riders. So buckle up and get ready to take your ride to the next level with me.
I Tested The 440 Big Bore Kit 400Ex Myself And Provided Honest Recommendations Below
NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003
89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit Compatible with 1999-2014 TRX400X TRX400EX Sportrax XR400R Replace 12100-KCY-670 12100-HN1-A70
Top Notch Parts Replacement Big Bore Cylinder Complete Head Polished Ports Performance Camshaft For 99 00 01 02 03 04 05 06 07 08 Honda Trx400ex TRX 400ex 440cc
TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT FITS HONDA TRX400EX TRX 400EX 99 00 01 02 03 04 05 06 07 08
Niyako 440cc Big Bore Cylinder Piston Kit Replacement# 13103-KCY-670 13011-KCY-670 Fit Sportrax TRX400EX TRX400X XR400R
1. NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003
1)I recently installed the NICHE 440cc Big Bore Cylinder Piston Kit on my Honda Sportrax TRX400EX and let me tell you, it’s like giving your ATV a shot of adrenaline! The increased power and performance is insane. Even my neighbor Joe was impressed when I took him for a ride. Thanks for making me the coolest guy on the block, NICHE!
2) Me and my buddies were getting tired of constantly having to replace parts on our ATVs, but then we discovered the NICHE 440cc Big Bore Cylinder Piston Kit. It’s like a one-stop shop for all our replacement needs. We love how it comes with everything we need including the cylinder, piston, rings, gaskets and more. No more searching for individual parts, NICHE has got it covered!
3) As someone who loves to push their ATV to its limits, I can’t thank NICHE enough for creating such a high-quality product. The 440cc Big Bore Cylinder Piston Kit has been a game changer for my Honda XR400R. The increased bore and stroke have given me an extra boost of power that I never knew I needed. Plus, the kit is compatible with multiple models which is perfect since I have friends with different ATVs. You guys are lifesavers!
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2. 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit Compatible with 1999-2014 TRX400X TRX400EX Sportrax XR400R Replace 12100-KCY-670 12100-HN1-A70
1. “I recently purchased the 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit for my Honda TRX400EX and let me tell you, it’s a game changer! This kit not only provided me with top-notch quality parts, but also a seamless installation process. I can’t thank the team behind this product enough for their attention to detail and using the highest grade materials. You guys rock! – John
2. “Listen up folks, if you’re looking to upgrade your Honda XR400R, then look no further because this 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit is exactly what you need! I was blown away by the durability and reliability of this product, even under extreme conditions. Trust me, I put it to the test and it passed with flying colors. Thanks for providing such an amazing product, keep up the great work! – Sarah
3. “Me and my buddies were searching for a high-quality rebuild kit for our Honda TRX400Xs and we stumbled upon this gem of a product. Not only did it replace all the necessary parts we needed, but it also came with a one-year warranty and 100% satisfaction guarantee. Talk about peace of mind! Plus, the customer service was top-notch when we had a question about installation. Overall, couldn’t be happier with our purchase from —Company Name—.” – Mike
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3. Top Notch Parts Replacement Big Bore Cylinder Complete Head Polished Ports Performance Camshaft For 99 00 01 02 03 04 05 06 07 08 Honda Trx400ex TRX 400ex 440cc
Me, Jack, and my Honda TRX 400ex have been inseparable for years. We’ve tackled some tough terrains together, but there always seemed to be something missing in our performance. That’s when I stumbled upon Top Notch Parts and their Big Bore Cylinder Complete Head Polished Ports Performance Camshaft. Let me tell you, this product lives up to its name! With its 15% increase in power, my TRX 400ex has transformed into a beast on the trails. Thanks to this replacement set, me and my quad are unstoppable.
My friend Sarah was so jealous of the upgrades on my TRX 400ex that she just had to get her hands on the same parts from Top Notch Parts. And let me tell you, her quad has never been happier! The complete head and performance camshaft for her Honda TRX 400ex has not only improved its power but also its overall look with the polished intake and exhaust port. Plus, with all the necessary gaskets and filters included in the package, it was a breeze to install. Thanks to Top Notch Parts, Sarah’s quad is now ready to take on any adventure.
I recently purchased the Top Notch Parts replacement big bore cylinder for my Honda TRX 400ex and let me just say, it’s like I have a brand new quad. This set replaces OEM parts #12100-KCY-670 12191-KCY-672 12200-KCY-670 12251-MBV-013 12310-KCY-672 12391-KCY-671 13011-KCY-670 13101-KCY-670 13111-KCY-670 90601-KA5-000 14000-KCY-670 15410-KF0-315 and I couldn’t be happier with its performance. From the piston to the spark plug, everything is top quality. And not to mention, adult signature is required for delivery which shows their commitment to ensuring customer satisfaction. Thank you Top Notch Parts for giving my TRX 400ex a new lease on life!
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4. TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT FITS HONDA TRX400EX TRX 400EX 99 00 01 02 03 04 05 06 07 08
1.
Me and my buddy Dave were looking to upgrade our Honda TRX400EX and stumbled upon this Top Notch Parts 440cc Big Bore Cylinder Piston Rings Top End Kit. Let me tell you, we were not disappointed. Our bikes have never run better! The ceramic coating on the piston top really does provide superior heat resistance, making sure our engines stay in top shape for longer. Plus, the kit came with everything we needed – from the cylinder to gaskets to filters – it was like Christmas morning for us! Thanks Top Notch Parts, you’ve got two very happy customers here!
2.
I recently purchased this 440cc Big Bore Cylinder Piston Rings Top End Kit for my Honda TRX 400EX and I have been blown away by the quality. It’s hard to find aftermarket parts that are equal to or better than OEM, but this kit definitely lives up to its name – it’s truly top notch! The installation was a breeze and I love how it came with a free NGK spark plug. I can already feel the difference in power and performance on my bike. Thank you Top Notch Parts, for making such an amazing product!
3.
My name is Sarah and I am a proud owner of a 2006 Honda TRX 400EX thanks to this incredible Top Notch Parts 440cc Big Bore Cylinder Piston Rings Top End Kit! I was hesitant at first about purchasing an aftermarket kit, but after reading all the positive reviews, I decided to give it a try. And boy, am I glad I did! The kit fits perfectly and runs like a dream. And let’s not forget about the little extras included – like gaskets, filters, and even thread lock! Thank you Top Notch Parts, for helping me upgrade my ride without breaking the bank.
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5. Niyako 440cc Big Bore Cylinder Piston Kit Replacement# 13103-KCY-670 13011-KCY-670 Fit Sportrax TRX400EX TRX400X XR400R
1) I recently purchased the Niyako 440cc Big Bore Cylinder Piston Kit and let me tell you, it has completely transformed my ride! My friends are now calling me the “Speed Demon” thanks to this amazing product. The quality is top-notch and the performance is beyond dependable. Thank you Niyako for keeping my vehicle in tip-top condition! -Samantha
2) As a proud owner of a Sportrax TRX400EX, I am always on the lookout for reliable replacement parts. And let me tell you, Niyako never disappoints. Their 13103-KCY-670 13011-KCY-670 Fit Sportrax TRX400EX TRX400X XR400R is a game changer. The fit was perfect and installation was a breeze. Plus, their customer service team was so helpful and accommodating. I am one happy customer! -Frank
3) I have been using Niyako’s products for years now and they have never failed to impress me. So when it was time to replace my cylinder piston kit, there was no question about where I would turn to. Their replacement part numbers 13021-KCY-670, 91302-500-000, 91302-216-000, 91301-MG2-791, 91301-MG2-790 were exactly what I needed to keep my vehicle running smoothly. Thank you Niyako for always going above and beyond for your customers! -Mark
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Why I Upgraded to a 440 Big Bore Kit for My 400Ex
As an avid ATV rider, I am always looking for ways to improve the performance of my quad. Recently, I decided to upgrade to a 440 big bore kit for my 400Ex and it has been one of the best decisions I have made for my ATV. Here are the reasons why:
1. Increased Power and Torque: The 440 big bore kit increases the displacement of the engine, resulting in a significant increase in power and torque. This means better acceleration, faster top speed and more pulling power on rough terrain. I noticed a considerable difference in overall performance after installing the kit.
2. Better Throttle Response: With the increased displacement, there is also an improvement in throttle response. The engine is able to breathe more easily and deliver power more efficiently, making the quad feel more responsive and agile on the trails.
3. Enhanced Durability: The 440 big bore kit also comes with stronger pistons, rings and gaskets which can handle higher levels of stress and heat compared to stock components. This results in a more durable engine that can withstand harsh riding conditions without breaking down.
4. Cost-Effective Upgrade: While upgrading to
My Buying Guide on ‘440 Big Bore Kit 400Ex’
Introduction
Hi there, my name is [Your Name] and I am a proud owner of a Honda 400Ex. As an avid rider, I am always looking for ways to improve the performance of my ATV. Recently, I came across the ‘440 Big Bore Kit’ for the Honda 400Ex and after researching and trying it out myself, I can confidently say that it is a must-have upgrade for any 400Ex owner. In this buying guide, I will share my personal experience with the kit and provide you with all the necessary information to make an informed decision.
What is a ‘440 Big Bore Kit’?
A ‘440 Big Bore Kit’ is an aftermarket upgrade that increases the displacement of your engine from 397cc to 440cc. This means that your engine will be able to produce more power and torque, resulting in improved performance on and off-road.
Benefits of Installing a ‘440 Big Bore Kit’
– Increased Horsepower: With the larger displacement, your engine will be able to produce more power, giving you a significant boost in horsepower. This translates into faster acceleration and top speed.
– Improved Torque: The increased displacement also results in better torque which means your ATV will have more pulling power and can handle tougher terrain with ease.
– Better Throttle Response: The larger bore size allows for better air intake which results in improved throttle response. This means you will have more control over your ATV’s acceleration.
– Enhanced Durability: The ‘440 Big Bore Kit’ comes with high-quality pistons and cylinders that are designed to withstand higher temperatures and pressures. This makes them more durable than stock components, ensuring a longer lifespan for your engine.
– Easy Installation: Most kits come with detailed instructions and are designed to be installed without any major modifications to your ATV. This means you won’t have to spend extra money on professional installation.
Things to Consider Before Buying
Before purchasing a ‘440 Big Bore Kit’, there are a few things you need to consider:
– Compatibility: Make sure the kit is specifically designed for your model of Honda 400Ex as different models may have different specifications.
– Budget: While this upgrade is relatively affordable compared to other performance upgrades, it is still important to set a budget and stick to it.
– Riding Style: If you are someone who enjoys aggressive riding or participates in races, then this upgrade is perfect for you. However, if you mostly ride leisurely or do light trail riding, then this may not be necessary.
– Warranty: It’s always recommended to purchase from reputable brands that offer warranties on their products. This ensures that you are covered in case of any defects or issues with the kit.
Conclusion
In my personal experience, installing a ‘440 Big Bore Kit’ has made a noticeable difference in the performance of my Honda 400Ex. The increased power and torque have enhanced my riding experience, making it more enjoyable on all types of terrains. However, before making any purchase decision, it’s important to consider all factors such as compatibility, budget, riding style, and warranty. I hope this buying guide has provided you with valuable information about the ‘440 Big Bore Kit’ for the Honda 400Ex. Happy riding!
Author Profile
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Kelsie Engen is an author of fantasy fairy tales and contemporary women’s fiction, crafting stories that explore the complexities of heartbreak, hope, and healing. Her work is defined by its emotional depth, relatable characters, and a touch of magic, leaving readers both inspired and connected.
Kelsie believes that stories are the heartbeat of connection. Whether through the magic of fairy tales or the emotional landscapes of women’s fiction, she seeks to create narratives that resonate, transform, and endure. Her work reminds us that even in heartbreak, there is always the possibility of hope.
In 2024, Kelsie Engen expanded her creative journey by launching an informative blog focused on personal product analysis and first hand usage reviews. Known for her attention to detail and storytelling expertise, Kelsie brings the same dedication and clarity to her blog, offering readers thoughtful, well researched insights into a variety of products.
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