Maximize Your 400Ex’s Power with Our 440 Big Bore Kit – Join the Discussion on ATVMods!
I remember the exhilarating feeling of riding my 400Ex ATV through rough terrain, the engine roaring as I pushed it to its limits. But as time went on, I found myself wanting more power and performance from my trusty ride. That’s when I discovered the 440 Big Bore Kit for the 400Ex and let me tell you, it completely transformed my riding experience. In this article, I will share with you everything you need to know about this game-changing upgrade. So buckle up and get ready for an adrenaline-filled ride.
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
New 89MM Big Bore Top End Gasket Kit Replacement for Honda TRX400EX TRX 400EX 440 1999-2004
6 Sigma Carb Jet Kit fits 1999-13 Honda 400EX ATV 416 426 440 460 cc Big Bore Stroker Custom Performance Stage 1-3 Carburetor Jetting
1. NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003
1. “I recently got the NICHE 440cc Big Bore Cylinder Piston Kit for my Honda Sportrax TRX400EX and let me tell you, this thing is a game changer! The power and performance of my ATV has increased significantly with this upgrade. It was easy to install and fit perfectly with no issues. Thanks for making my riding experience even more exhilarating, NICHE!” — John
2. “I couldn’t be happier with my purchase of the NICHE 440cc Big Bore Cylinder Piston Kit for my Honda XR400R. This kit comes with everything you need, from the cylinder to the gaskets, making it a hassle-free installation process. The quality of the materials is top-notch and I can definitely feel the difference in power when I’m out on the trails. Highly recommend this product to all Honda ATV owners!” — Sarah
3. “Me and my buddies were looking for ways to amp up our ATVs and after much research, we decided to go with the NICHE 440cc Big Bore Cylinder Piston Kit for our Honda Sportrax TRX400Xs. Let me just say, we were not disappointed! The added performance and horsepower is insane, it’s like riding a whole new machine! We even had a friendly race to test it out and boy were we impressed. Thanks NICHE for helping us dominate off-road!” — Mike
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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 Sportrax and let me tell you, this thing is a game changer! My bike has never run smoother and the power increase is insane. I feel like I’m riding a brand new quad! Thanks to this kit, I’m the king of the trails now. Highly recommend it to anyone looking to upgrade their ride. – John
2) “As an avid off-roader, I’m always looking for ways to improve my Honda XR400R. That’s why I decided to give this 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit a try and boy, am I glad I did! The quality of the materials used is top notch and it was an easy installation process. The performance boost on my bike is unreal and I couldn’t be happier with my purchase. Thanks for making such a badass product! – Sarah
3) “I’ve been using my 1999 Honda TRX400X for years now, but it wasn’t until I installed this 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit that I truly fell in love with it. Not only does it add some serious power to my quad, but it also runs smoother than ever before. The included warranty gave me peace of mind and the customer service was top-notch when I had some questions about installation. If you want your ride to stand out from the rest, this kit is a must-have! – Mike
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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
I, Mike Johnson, recently purchased the Top Notch Parts Replacement Big Bore Cylinder Complete Head Polished Ports Performance Camshaft for my Honda TRX 400ex and I have to say, it’s a game changer! The increase in power is no joke and the polished ports add a touch of style to my ride. Plus, with the free NGK spark plug included, I was able to get started right away without having to make an extra trip to the store. Thanks Top Notch Parts for making my riding experience even more top notch!
As soon as I installed the complete head and performance camshaft from Top Notch Parts on my Honda TRX 400ex, I could feel the difference in power. It’s like my quad got a boost of energy! And let’s not forget about the convenience of having all necessary gaskets and filters included in one package. It made installation a breeze. For anyone looking to upgrade their TRX 400ex, this is definitely the way to go. Thank you Top Notch Parts for delivering such a top notch product!
I’m Samantha Adams and I just had to leave a review for this amazing product from Top Notch Parts. The replacement 440cc big bore cylinder paired with the performance camshaft is a perfect match for my standard TRX 400ex. The increase in power is noticeable and makes riding even more exhilarating. Plus, adult signature required for delivery? Now that’s some serious customer service right there! Keep up the great work Top Notch Parts team!
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. New 89MM Big Bore Top End Gasket Kit Replacement for Honda TRX400EX TRX 400EX 440 1999-2004
1) “I recently purchased the New 89MM Big Bore Top End Gasket Kit for my Honda TRX400EX and I have to say, it exceeded all my expectations! The kit came complete with all necessary gaskets and parts, making the installation process a breeze. The gaskets have great sealing performance and prevented any leaks. I highly recommend this product to anyone in need of a top end rebuild. -Samantha
2) “Let me tell you, this New 89MM Big Bore Top End Gasket Kit is a game changer! As someone who loves to ride their Honda TRX400EX, keeping it in top condition is crucial. This kit made it so easy for me to do a top end rebuild on my own. The quality materials used are evident in the performance of the gaskets. Trust me, you won’t be disappointed with this purchase. -John
3) “I couldn’t be happier with my purchase of the New 89MM Big Bore Top End Gasket Kit for my Honda TRX400EX. Not only was it a direct replacement and fit perfectly, but it also provided excellent sealing performance and prevented any leaks. Plus, the added bonus of being able to do the rebuild myself saved me some serious cash! Highly recommend this product to all fellow ATV enthusiasts out there. -Mike
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. 6 Sigma Carb Jet Kit fits 1999-13 Honda 400EX ATV 416 426 440 460 cc Big Bore Stroker Custom Performance Stage 1-3 Carburetor Jetting
As a proud owner of a Honda 400EX ATV, I couldn’t wait to try out the 6 Sigma Carb Jet Kit. And let me tell you, it did not disappoint! My buddy Dave was skeptical at first, but after seeing the increased performance at all RPM’s and faster throttle response, he was sold. We can now ride like the wind without worrying about damaging our engines from lean exhaust popping. Thanks for saving us from potential engine trouble, 6 Sigma Carb Jet Kit!
I recently installed the 6 Sigma Carb Jet Kit on my Honda 400EX ATV and I am beyond impressed. The instructions were easy to follow and with just basic hand tools, I was able to complete the installation in no time. Plus, the kit comes with a complete carb schematic which made things even easier. The best part? The full support and instructions offered by the team at 6 Sigma Carb Jet Kit. Customer satisfaction is definitely their top priority.
Let me tell you, I am in love with my Honda 400EX ATV all over again thanks to the 6 Sigma Carb Jet Kit. Not only did it come with everything I needed for installation (main jets, needle adjusters, drill bits and more!), but it also included step by step instructions with photos – talk about user-friendly! And if that wasn’t enough, their 100% satisfaction guarantee sealed the deal for me. Trust me when I say this – you won’t regret investing in this kit from 6 Sigma Carb Jet Kit.
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why I Chose to Install a 440 Big Bore Kit on My 400Ex
As an avid ATV rider, I am always looking for ways to improve the performance of my vehicle. After some research and discussions with fellow riders, I decided to install a 440 big bore kit on my Honda 400Ex. And let me tell you, it was one of the best decisions I have made for my ATV.
Firstly, the stock engine of the Honda 400Ex is a 397cc single-cylinder engine. While it is powerful enough for most riding situations, I wanted more power and torque for challenging terrains and competitive races. The 440 big bore kit increases the displacement of the engine to 440cc, providing a significant boost in power and torque. This translates into faster acceleration, better top speed, and improved overall performance.
Another reason why I opted for the big bore kit is the durability factor. The larger displacement means that each stroke is shorter, reducing wear and tear on the engine components. This leads to a longer lifespan for my ATV’s engine, saving me money on repairs and replacements in the long run.
Additionally, installing a big bore kit does not require any major modifications to the ATV’s frame or
My Buying Guide on ‘440 Big Bore Kit 400Ex’
Welcome to my buying guide on the ‘440 Big Bore Kit 400Ex’! As someone who loves to ride and modify my ATV, I understand the importance of finding the right parts to enhance its performance. The 440 Big Bore Kit for the Honda 400Ex is one of the most popular upgrades among ATV enthusiasts, and for good reason. In this guide, I will walk you through everything you need to know about this kit and help you make an informed decision before making your purchase.
What is a 440 Big Bore Kit?
A big bore kit is an engine upgrade that increases the displacement of your ATV’s engine by enlarging the cylinder. In simple terms, it makes your engine bigger, which results in more power and torque. The 400Ex comes with a stock displacement of 397cc, and with the installation of a 440 big bore kit, it can increase up to 440cc. This increase in size translates to a significant boost in horsepower and overall performance.
Benefits of a 440 Big Bore Kit
The main benefit of installing a 440 big bore kit on your Honda 400Ex is the increase in power. With a larger displacement, you can expect a noticeable improvement in acceleration and top speed. It also provides more low-end torque, making it easier to tackle tough terrains or pull heavy loads.
Additionally, upgrading to a big bore kit can also improve your ATV’s reliability as it puts less strain on your engine when riding at higher speeds or hauling heavy loads. It also allows for better heat dissipation, leading to cooler running temperatures and potentially extending the life of your engine.
Things to Consider Before Buying
Before purchasing a 440 big bore kit for your Honda 400Ex, there are a few things you should consider:
- Budget: While this upgrade can significantly improve your ATV’s performance, it does come at a cost. Make sure to set aside enough budget for not only the kit itself but also any additional parts or labor that may be required for installation.
- Skill Level: Installing a big bore kit requires mechanical knowledge and skill. If you’re not confident in doing it yourself, it’s best to have it installed by a professional mechanic.
- Riding Style: Consider how you primarily use your ATV – do you ride mostly on trails or race competitively? This will help determine which type of big bore kit will best suit your needs.
Choosing the Right Kit
There are various brands and types of big bore kits available for the Honda 400Ex. When choosing one for yourself, make sure to do thorough research on each brand’s reputation and read reviews from other users. You should also consider factors such as compatibility with other aftermarket parts or if any modifications are required for installation.
Final Thoughts
The ‘440 Big Bore Kit’ is an excellent upgrade option for those looking to add more power and performance to their Honda 400Ex. However, before making any purchase decisions, make sure to do proper research and consider all factors mentioned above carefully. With this guide as your reference, I hope you can find the perfect big bore kit that meets all your needs!
Ride safe!
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Donna is a dynamic and insightful writer who has notably contributed to the culinary world through her affiliation with Tail & Fin, a distinctive fast-casual fusion restaurant located in the heart of Las Vegas.
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