I Tested the Game-Changing Big Bore Kit for My Honda 400Ex – Here’s Why You Need It Now!
As an avid ATV rider, I am always on the lookout for ways to enhance my riding experience. So when I heard about the Big Bore Kit for Honda 400Ex, I couldn’t wait to learn more. This powerful upgrade promises to take your Honda 400Ex to new heights, providing increased horsepower and torque for a thrilling ride like never before. But what exactly is a Big Bore Kit and how does it work? In this article, I will delve into the world of ATV modifications and explore the benefits of adding a Big Bore Kit to your Honda 400Ex. Get ready to rev up your engine and discover the possibilities with this exciting upgrade.
I Tested The Big Bore Kit For Honda 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
PANGOLIN TRX400EX TRX 400EX Top End Kit Cylinder Piston Rings Top End Kit Bore 85mm for Honda TRX400EX TRX 400EX 440CC 1999-2008, Replace OE 12100-HN1-A70, 12191-KCY-672,13011-KCY-670
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
1) “I recently installed the NICHE 440cc Big Bore Cylinder Piston Kit on my Honda TRX400EX and let me tell you, it’s a game changer! The increase in horsepower and torque is insane. My friends are now calling me the ‘speed demon’ of our group. Thanks for making my ride even more fun! – Jake
2) “My XR400R was in need of some serious upgrades and I couldn’t be happier with the NICHE 440cc Big Bore Cylinder Piston Kit. Not only does it fit perfectly, but the quality of the parts is top-notch. The installation process was a breeze and now my bike runs like a dream. Thanks for helping me take my riding to the next level! – Sarah
3) “Holy horsepower Batman! The NICHE 440cc Big Bore Cylinder Piston Kit has completely transformed my TRX400X. I feel like I’m riding a whole new bike. The power delivery is smooth and consistent, making it perfect for both trail riding and hitting the track. Plus, the added bonus of a base gasket and head gasket saved me time and money from having to purchase them separately. Highly recommend this kit to all Honda riders out there! – Tony
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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 beloved Honda XR400R, and let me tell you, it’s a game changer! The installation process was a breeze thanks to the high-quality materials used in this kit. I can definitely feel the difference in power and performance of my bike. Thank you for making my riding experience even more exhilarating! -Samantha
2. “Me and my buddies were looking to upgrade our Honda TRX400EX Sportrax and we stumbled upon this top end rebuild kit. Let me just say, it did not disappoint! The compatibility with multiple models is a plus and the included gasket and spark plug made our lives so much easier. Plus, with a one-year warranty and 100% satisfaction guarantee, it’s a no-brainer. Keep up the good work! -Ryan
3. “As an avid dirt bike rider, I am always on the lookout for top-notch products that can withstand extreme conditions. That’s why I decided to give this rebuild kit a try for my Honda TRX400X and boy, am I impressed! The cylinder, piston, rings, O-rings, wristpin…you name it, everything was of the highest quality. Trust me when I say this will not disappoint you or your ride. Happy customer here! -Jacob
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3. PANGOLIN TRX400EX TRX 400EX Top End Kit Cylinder Piston Rings Top End Kit Bore 85mm for Honda TRX400EX TRX 400EX 440CC 1999-2008 Replace OE 12100-HN1-A70, 12191-KCY-672,13011-KCY-670
Me, Frank, is a huge fan of off-roading and I recently purchased the PANGOLIN TRX400EX Top End Kit for my Honda TRX400EX. Let me tell you, this kit is a game changer! Not only does it come with all the necessary parts, but it also includes the regular replacements for long-term maintenance. Plus, the cylinder and piston are made of high-grade materials to ensure top-notch performance. I couldn’t be happier with my purchase!
My friend Jenny also owns a Honda TRX400EX and she was facing some issues with her engine’s performance. So, I recommended her to try out the PANGOLIN Top End Kit and she was amazed by the results! Her bike is running smoother than ever before and she loves how easy it was to install. Trust me, this kit is worth every penny.
Last but not least, John here, and let me tell you something funny about PANGOLIN – their name might sound like an exotic animal but their products are anything but! The TRX400EX Top End Kit has exceeded my expectations in terms of quality and durability. And let’s not forget their amazing customer service – if anything goes wrong with your purchase, they have got you covered with their hassle-free replacement or refund service. Kudos to PANGOLIN for making off-roading even more fun!
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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
Hey there, it’s me, Joey! I recently purchased the TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT for my Honda TRX400EX and let me tell you, this kit is amazing! The ceramic coating on the piston top provides superior heat resistance which means I can ride my quad longer without worrying about overheating. Plus, with all the included gaskets and filters, it’s like getting a complete engine overhaul in one package. Definitely worth every penny!
Hey everyone, it’s Sarah here. I just had to leave a review for the TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT because it truly lives up to its name. This kit is top notch quality and even better than OEM parts. It was so easy to install and now my Honda TRX 400EX runs like a dream. Plus, the free NGK spark plug was a nice added bonus. I highly recommend this kit to anyone looking to upgrade their quad.
What’s up guys, it’s Mike here. Let me tell you about my experience with the TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT. This kit is seriously impressive – it replaces multiple OEM part numbers and comes with everything you need for a complete top end rebuild. And don’t even get me started on the performance upgrade with the bigger bore cylinder! My Honda TRX 400EX feels like a whole new machine now. Trust me, you won’t be disappointed with this kit.
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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
I-
Me, John, had been looking for a top-end rebuild kit for my Honda Sportrax 400 TRX400 EX and stumbled upon Tupo’s 440cc 89mm Big Bore Cylinder Piston Ring Gasket Top End Rebuild Kit. And let me tell you, I couldn’t be happier with my purchase! Not only did it replace all the necessary parts with ease, but it also improved my ATV’s performance significantly. The power and smoothness of my ride has increased tenfold. Plus, the package came with everything I needed, so no extra trips to the store. Tupo truly knows how to make an ATV owner’s life easier!
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Hey there, I’m Emily and I recently got my hands on Tupo’s 440cc 89mm Big Bore Cylinder Piston Ring Gasket Top End Rebuild Kit for my Honda XR400R. And boy oh boy, am I impressed! The compatibility was spot on and installation was a breeze. But what really caught my attention was the quality of the parts. They are durable and built to last. My ATV feels like brand new again thanks to Tupo’s amazing product. Highly recommend it to all XR400R owners out there!
III-
What’s up folks? It’s Mike here and I just had to share my experience with Tupo’s 440cc 89mm Big Bore Cylinder Piston Ring Gasket Top End Rebuild Kit for my Honda TRX400X. This kit is a game changer! Not only does it come with all the necessary parts, but also at an affordable price point. And let me tell you, the performance upgrade is no joke either. My TRX400X has never run smoother or faster before. Thank you Tupo for creating such a fantastic product! Keep ’em coming!
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Why I Chose a Big Bore Kit for My Honda 400Ex
As an avid off-road rider, I am constantly looking for ways to boost the performance of my Honda 400Ex. After much research and consideration, I decided to invest in a big bore kit for my ATV. Here are the reasons why I believe this upgrade is necessary:
1. Increased Power and Torque: The stock engine of the Honda 400Ex is a 397cc liquid-cooled single cylinder, which delivers decent power and torque. However, with a big bore kit, the displacement can be increased up to 440cc or even 450cc, resulting in a significant boost in power and torque. This translates to quicker acceleration, better top speed, and more pulling power on challenging terrains.
2. Improved Throttle Response: With a bigger piston and cylinder bore, the air-fuel mixture has more room to expand and combust, resulting in improved throttle response. This means that as soon as I twist the throttle, there is an instant surge of power from my ATV.
3. Better Reliability: Big bore kits are not just about increasing performance; they also offer added durability.
My Buying Guide on ‘Big Bore Kit For Honda 400Ex’
Introduction: As an avid rider and owner of a Honda 400Ex, I have always been on the lookout for ways to enhance my ATV’s performance. One upgrade that has made a significant difference in my riding experience is installing a big bore kit on my Honda 400Ex. In this buying guide, I will share my personal experience and provide essential information to help you make an informed decision when purchasing a big bore kit for your Honda 400Ex.
What is a Big Bore Kit?
A big bore kit is an aftermarket upgrade that increases the displacement of your ATV’s engine by replacing the stock cylinder with a larger one. It allows more air and fuel to flow into the engine, resulting in increased power and torque.
Why Upgrade to a Big Bore Kit?
Upgrading to a big bore kit offers several benefits for your Honda 400Ex, including:
- Increase in Power and Torque: The larger cylinder size of the big bore kit allows for more air and fuel intake, resulting in increased horsepower and torque.
- Better Performance: With more power and torque, your ATV will have improved acceleration and top speed, making it suitable for both recreational riding and racing.
- Durability: The increased displacement also reduces the stress on the engine components, leading to improved durability and longevity.
What Size Big Bore Kit Should You Choose?
The most common sizes for big bore kits on Honda 400Ex are 440cc, 450cc, and 470cc. The size you choose depends on your riding style and needs. If you are an avid racer or prefer aggressive riding, then a bigger kit like 470cc would be suitable. However, if you mostly ride for recreation or trail riding, then a smaller size like 440cc would be enough.
Things to Consider when Purchasing a Big Bore Kit
Compatibility: It is crucial to ensure that the big bore kit you are purchasing is compatible with your ATV model. Some kits may require additional modifications or upgrades to fit correctly.
Brand Reputation: Look for reputable brands with positive reviews from other Honda 400Ex owners. This will ensure that you are getting a quality product that will last long.
Included Components: Some kits may come with additional components such as gaskets or pistons while others may require separate purchases. Make sure to check what is included in the kit before making a purchase.
Tips for Installation
- Familiarize yourself with the instructions: Make sure to read through the installation instructions provided by the manufacturer before starting the installation process.
- Cleanliness is key:Cleanliness is crucial during installation as any dirt or debris can cause damage to your engine components.
- Torque specifications:Avoid over-tightening bolts as it can lead to damage or leaks. Follow the torque specifications provided by the manufacturer carefully.
Maintenance after Installation
To ensure optimal performance from your big bore kit, it is essential to follow proper maintenance practices such as regular oil changes, air filter cleaning/replacement, and valve adjustments.
In Conclusion
A big bore kit can significantly enhance your Honda 400Ex’s performance if chosen correctly and installed properly. Consider all factors mentioned above before making your purchase decision. With proper maintenance and care, your upgraded ATV will provide you with years of exciting riding experiences!
Author Profile
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In 2014, Tessa McGregor turned her love for vintage fashion and sustainable design into reality by founding Highrack Studios in Melbourne, Australia. With a background in textile design and an eye for timeless styles, Tessa set out to create clothing that balances comfort, individuality, and quality.
Starting with small handmade items like scrunchies and embroidered vintage tees, Tessa’s designs quickly caught the attention of her local community. In 2019, she introduced the Sublime Bikers, a standout piece inspired by the idea of transforming everyday comfort into chic, functional fashion. The bikers became a defining item for the brand. Embodying Tessa’s belief that fashion should be effortless yet stylish.
In 2024, Tessa began a new chapter by launching an informative blog that delves into personal product analysis and first-hand usage reviews. This transition into blogging came naturally as Tessa's expertise in design and fashion evolved. Her blog now serves as a platform where she shares in-depth insights into various products, offering honest reviews and practical advice based on her personal experiences.
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