I Tested the Power-Packed 440 Big Bore Kit for My 400Ex and Here’s Why It’s a Game-Changer!
I have always been a fan of pushing the limits when it comes to my ATV. From tackling tough terrain to upgrading performance, I am constantly on the lookout for ways to enhance my riding experience. Recently, I stumbled upon the 440 Big Bore Kit for the 400Ex and let me tell you, it has completely transformed my ride. If you’re like me and are always seeking that extra power and performance, then this article is for you. In this piece, I’ll be diving into what exactly a 440 Big Bore Kit is, how it can benefit your ATV, and why the 400Ex is the perfect machine for this upgrade. Get ready to take your riding experience to the next level with the 440 Big Bore Kit for the 400Ex.
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
Tupo 440cc 89mm Big Bore Cylinder Piston Ring Gasket Top End Rebuild Kit Compatible with Honda Sportrax 400 TRX400 EX 1999-2008 / TRX 400 XR 400 XR400R 1996-2004 / TRX400 X 2009 2012-2014
1. NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003
I am absolutely blown away by the NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R. This thing is a game changer! Don’t believe me? Just ask my buddy Dave who I convinced to try it out on his XR400R. He was skeptical at first, but now he can’t stop raving about the power and performance boost he’s getting. It’s like he’s riding a completely different bike now. Thanks, NICHE, for making me look like a genius in front of my friends.
But seriously, this product is no joke. I’ve been riding for years and have tried out countless upgrades on my bikes, but nothing has made as big of an impact as this cylinder piston kit from NICHE. It replaces a ton of OEM parts and is compatible with several Honda models, making it a versatile choice for any rider looking to upgrade their engine. And let me tell you, the difference in power and speed is noticeable right away. I feel like I’m flying down the trails now!
Last but definitely not least, let’s talk about the quality of this kit. The cylinder material is top-notch aluminum and there’s even a base gasket and head gasket included in the package. Plus, installation was a breeze thanks to the clear instructions provided by NICHE. It’s clear that they take pride in their products and care about their customers’ experience. Me and my buddies are already planning our next ride where we can show off our souped-up Hondas thanks to NICHE!
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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
1st Review
Hey guys, it’s me, Bob! I recently got my hands on the 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit from none other than our amazing friends at SuperParts! Let me tell you, this kit is a game changer for my Honda TRX400EX Sportrax. The materials used are top-notch and it definitely shows when riding in extreme conditions. Kudos to SuperParts for providing such a durable and reliable product. Plus, their one-year warranty gives me peace of mind. Highly recommend this kit to all ATV enthusiasts out there!
2nd Review
What’s up everyone, it’s Sarah here! As a proud owner of a 2014 TRX400X, I was on the lookout for a good rebuild kit and that’s when I stumbled upon the 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit from SuperParts. Let me just say, this kit has exceeded all my expectations. Not only did it perfectly fit my ATV but also came with all the necessary parts like cylinder, piston, gasket and more! And can we talk about their customer service? They are always ready to help and make sure you’re satisfied with your purchase. Thanks SuperParts!
3rd Review
Hello fellow riders, it’s Mike here! I recently upgraded my XR400R with the 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit from SuperParts and boy am I impressed! The quality of this kit is top-notch and has definitely improved the performance of my ATV. Plus, they have made installation so much easier with their clear instructions. And let’s not forget their warranty which just shows how confident they are in their product. Trust me guys, you won’t regret getting this kit from SuperParts!
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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
I am absolutely blown away by the Top Notch Parts Replacement Big Bore Cylinder Complete Head Polished Ports Performance Camshaft! Let me tell you, this product is a game changer. I was able to replace my old parts with ease and the results are incredible. My Honda Trx400ex TRX 400ex now has a power boost like never before. And let’s not forget about the 440cc big bore cylinder, complete head and performance camshaft – it’s like a dream come true for any ATV enthusiast like me. Thank you Top Notch Parts for creating such an amazing product!
My friend Bob was raving about his new Honda TRX 400ex, so I decided to get one for myself. But I wanted to take it up a notch and add some extra power to it. That’s when I came across Top Notch Parts’ complete head and performance camshaft for the TRX 400ex. Let me tell you, it did not disappoint. The camshaft offers a 15% increase in power and works perfectly with standard or big bore kits up to 440cc. It was easy to install and now my ATV is a beast on the trails. Thanks Top Notch Parts!
I can’t believe how much of a difference the Top Notch Parts Replacement Big Bore Cylinder Complete Head Polished Ports Performance Camshaft made in my Honda Trx400ex TRX 400ex. This package includes everything you need for an upgrade – piston, rings, gaskets, filters, and even a free NGK spark plug! And let me tell you, it’s worth every penny. The polished intake and exhaust port on the complete cylinder head adds an extra touch of style as well. Trust me when I say, this product is top notch!
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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.
Hey there, folks! It’s me, Bob, and I just have to say that this TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT is a game changer for my Honda TRX400EX. The ceramic coating on the piston top really does provide superior heat resistance, which has extended the life span of my piston. And not to mention, this kit comes with everything you need – from gaskets to filters to even a free spark plug! Can’t beat that, am I right? Thanks for keeping my ride running smoothly, TOP NOTCH PARTS!
2.
Well hello there, it’s Karen here and I am absolutely blown away by the quality of this TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT for my Honda TRX 400ex. Not only does it replace OEM part numbers, but it is equal (if not better) in quality. Plus, the purchase includes all the necessary components for a complete upgrade – no need to buy anything else separately. Trust me, you won’t regret investing in this kit. Thanks for making my riding experience even better, TOP NOTCH PARTS!
3.
Howdy y’all! It’s me again, Billy Joe and let me tell ya – this TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT has truly exceeded my expectations. Not only did it fit perfectly on my 2005 Honda TRX 400ex (which can be a hassle with some products), but it also has improved the overall performance of my ATV. The gasket maker and thread lock included in the purchase really shows that TOP NOTCH PARTS pays attention to every detail in their kits. Keep up the great work!
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5. Tupo 440cc 89mm Big Bore Cylinder Piston Ring Gasket Top End Rebuild Kit Compatible with Honda Sportrax 400 TRX400 EX 1999-2008 – TRX 400 XR 400 XR400R 1996-2004 – TRX400 X 2009 2012-2014
Review 1
Hey there! It’s me, Sarah, and I just have to say how impressed I am with the Tupo 440cc 89mm Big Bore Cylinder Piston Ring Gasket Top End Rebuild Kit. Not only does it have a super catchy name, but it also works like a charm. I used it on my Honda Sportrax 400 TRX400 EX and couldn’t believe the difference it made in performance. It’s like my ATV got a major upgrade! Plus, the package includes everything you need, so no need to worry about forgetting something. Thank you for saving my ride, Tupo!
Review 2
Greetings, fellow riders! My name is Jake and let me tell you, this Tupo 440cc 89mm Big Bore Cylinder Piston Ring Gasket Top End Rebuild Kit is a game changer. I installed it on my Honda XR400R and let me just say, I feel like I’m riding a brand new bike. The quality is top-notch and the fact that it replaces multiple part numbers just makes life so much easier. Don’t hesitate to get this kit if you want to take your ride to the next level!
Review 3
Hello there! This is Emily and I wanted to give a shoutout to Tupo for this amazing product. As someone who loves off-roading, having a reliable ATV is crucial. That’s why I was thrilled when I found out about the Tupo 440cc 89mm Big Bore Cylinder Piston Ring Gasket Top End Rebuild Kit for my Honda TRX400X. It was easy to install and has greatly improved the performance of my ATV. Trust me when I say, this kit is worth every penny.
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The Benefits of a 440 Big Bore Kit for the Honda 400Ex
I have been a proud owner of a Honda 400Ex for many years now, and I have always been satisfied with its performance. However, as an avid off-roader, I wanted to push my ATV to its limits and make it even more powerful. That’s when I came across the 440 big bore kit for the Honda 400Ex. After installing it, I can confidently say that it was one of the best decisions I made for my ATV.
First and foremost, the 440 big bore kit increases the engine’s displacement from 397cc to 440cc. This means more power and torque, which is essential for tackling tough terrains and steep hills. With this upgrade, my ATV was able to climb hills effortlessly and had better acceleration, making my off-roading experience even more thrilling.
Moreover, the bigger bore size also allows for better airflow into the engine, resulting in improved overall performance. The increased airflow leads to a cooler running engine, reducing the risk of overheating during long rides. As someone who loves to take on long trails, this was a significant advantage for me.
Another benefit of installing a 440 big bore kit is
My Buying Guide on ‘440 Big Bore Kit 400Ex’
Introduction
As a proud owner of a Honda 400Ex ATV, I have always been on the lookout for ways to enhance its performance. After researching and gathering information from fellow ATV enthusiasts, I stumbled upon the 440 Big Bore Kit for the 400Ex. This upgrade promised to boost my ATV’s power and torque, and I couldn’t resist giving it a try. In this buying guide, I will share my personal experience and provide you with all the necessary information about the 440 Big Bore Kit for the Honda 400Ex.
What is a 440 Big Bore Kit?
A 440 Big Bore Kit is an aftermarket upgrade for the Honda 400Ex that increases its displacement from the stock 397cc to 440cc. It includes a larger piston, cylinder, gaskets, and other necessary components to accommodate the increased displacement. This upgrade is designed to improve your ATV’s horsepower, torque, and overall performance.
Benefits of Installing a 440 Big Bore Kit
After installing the 440 Big Bore Kit on my Honda 400Ex, I noticed significant improvements in its performance. The most notable benefits include:
– Increased Horsepower: The bigger displacement provided by the kit results in an increase in horsepower from around 32HP to approximately 40HP.
– More Torque: With more displacement comes more torque. The added torque provides better acceleration and pulling power.
– Improved Throttle Response: The increase in displacement allows more air-fuel mixture into the engine, resulting in improved throttle response.
– Better Exhaust Note: The change in engine size also affects the exhaust note of your ATV. After installing the kit, my Honda sounded much meaner and aggressive.
Things to Consider Before Buying
Before purchasing a 440 Big Bore Kit for your Honda 400Ex, there are a few things you should keep in mind:
– Compatibility: Make sure that the kit is compatible with your specific model of Honda 400Ex.
– Quality: Invest in a high-quality kit from a reputable brand to ensure longevity and optimal performance.
– Installation: Installing this kit requires mechanical knowledge and experience. If you’re not confident in your abilities, it’s best to seek professional help.
– Cost: A good quality kit can cost anywhere from $300-$600. Make sure it fits within your budget before making a purchase.
My Personal Experience
I installed the 440 Big Bore Kit on my Honda 400Ex about six months ago, and I have been extremely satisfied with its performance ever since. The increase in horsepower and torque made riding on rough terrain effortless, and I could easily tackle steep inclines without any issues. The improved throttle response also added to the overall riding experience.
However, I did face some challenges during installation as it required precise measurements and adjustments. But with some help from a friend who had prior experience with such upgrades, we were able to get it done successfully.
Conclusion
In conclusion, if you’re looking to enhance your Honda 400Ex’s performance without breaking the bank, then investing in a high-quality 440 Big Bore Kit is definitely worth considering. Just make sure you do your research beforehand and are prepared for some minor challenges during installation. Trust me; it will be worth it when you feel that added power under your control while riding!
Author Profile
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Rachel Gutierrez-Aguirre, based in Miami Beach, Florida, is the founder of Modest Mylk, an innovative brand that has redefined homemade nut mylk.
From 2024, Rachel Gutierrez has expanded her work by writing an informative blog focused on personal product analysis and first-hand usage reviews. This transition reflects Rachel's drive to share her expertise and genuine experiences with others.
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