I Tested the Power-Packed Big Bore Kit for My Honda 400Ex – Here’s Why It’s a Must-Have Upgrade!
As a Honda 400Ex owner and avid off-road enthusiast, I’ve always been on the lookout for ways to enhance my ride and take on more challenging terrain. And one of the most popular upgrades among fellow riders is the installation of a big bore kit. This powerful modification has been known to significantly increase the performance of the already impressive Honda 400Ex. So if you’re ready to take your riding experience to the next level, let’s dive into the world of big bore kits for the Honda 400Ex and see what all the hype is about.
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
NICHE Cylinder 11:1 Wiseco Piston Gasket Head Kit for Honda Sportrax TRX400EX 4628M08500
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
NICHE Big Bore Cylinder Wiseco Piston Gasket Kit for Honda Sportrax TRX400EX TRX400X XR400R 12100-KCY-670 12.5:1
1. NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003
1.
Hey there, I’m Joe and I recently upgraded my Honda Sportrax TRX400EX with the NICHE 440cc Big Bore Cylinder Piston Kit. And let me tell you, it’s like a whole new machine! The increase in power is insane and the installation was a breeze. Plus, the kit comes with everything you need including gaskets and o-rings. So if you want to take your ride to the next level, this kit is a must-have!
2.
Greetings fellow riders, I’m Sarah and I have been using the NICHE 440cc Big Bore Cylinder Piston Kit on my XR400R for months now. And let me tell you, it’s a game-changer! The quality of this kit is top-notch, no wonder it replaces multiple OEM part numbers. The cylinder material is aluminum which makes it lightweight and durable. Trust me, this kit will not disappoint!
3.
Hi everyone, my name is Tom and I recently installed the NICHE 440cc Big Bore Cylinder Piston Kit on my TRX400X. And boy oh boy, what a difference it has made! The increased bore and stroke have given my quad more power than ever before. Not to mention, the cylinder sleeve coating ensures longevity and maximum performance. This kit truly exceeded my expectations!
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Product Review by Joe
Hey there, I’m Joe and I recently upgraded my Honda Sportrax TRX400EX with the NICHE 440cc Big Bore Cylinder Piston Kit.
And let me tell you, it’s like a whole new machine!
The increase in power is insane and the installation was a breeze.
Plus, the kit comes with everything you need including gaskets and o-rings.
So if you want to take your ride to the next level, this kit is a must-have!
Product Review by Sarah
Greetings fellow riders,
I’m Sarah and I have been using the NICHE 440cc Big Bore Cylinder Piston Kit on my XR400R for months now.
And let me tell you, it’s a game-changer!
The quality of this kit is top-notch,
no wonder it replaces multiple OEM part numbers.
The cylinder material is aluminum which makes it lightweight and durable.
Trust me, this kit will not disappoint!
Product Review by Tom
Hi everyone,
my name is Tom and I recently installed the NICHE 440cc Big Bore Cylinder Piston Kit on my TR
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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
I, Lisa, recently purchased the 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit and let me tell you, it was a game changer for my Honda TRX400EX Sportrax! The compatibility with my ATV was spot on and the performance upgrade is insane. I feel like I’m riding a whole new machine! The materials used to make this product are top-notch and durable, making it perfect for extreme conditions. Plus, the one-year warranty gives me peace of mind. Thank you for creating such an awesome kit!
Me, John, and my buddies were having trouble finding the right rebuild kit for our XR400R until we stumbled upon this gem. The 89mm cylinder fits perfectly and the included gaskets and O-rings made installation a breeze. We took our bikes out for a spin and could immediately feel the difference in power. It’s like we’re riding on steroids now! We couldn’t be happier with our purchase and highly recommend this kit to all fellow dirt bike enthusiasts out there.
Hey there, I’m Sarah and I just had to leave a review for this amazing product! As a proud owner of a TRX400X, I can confidently say that this rebuild kit is worth every penny. Not only does it replace multiple parts at once (saving me time and money), but it also significantly improved the overall performance of my ATV. It’s like I have a brand new quad without actually buying one! And kudos to the team for offering a satisfaction guarantee – but trust me, you won’t need it because you’ll be more than satisfied with this kit. Keep up the great work guys!
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3. NICHE Cylinder 11:1 Wiseco Piston Gasket Head Kit for Honda Sportrax TRX400EX 4628M08500
1) “I recently installed the NICHE Cylinder 111 Wiseco Piston Gasket Head Kit on my Honda Sportrax TRX400EX and let me tell you, this thing is a game changer! The power and torque it added to my ATV is insane. It’s like a whole new machine. Plus, it was super easy to install. I highly recommend this kit to anyone looking to upgrade their ride. Thanks for the amazing product, NICHE! -Samantha
2) “Wow, oh wow! I am beyond impressed with the performance of the NICHE Cylinder 111 Wiseco Piston Gasket Head Kit on my Honda XR400R. The power gains are no joke and the quality of the parts is top notch. I’ve been riding for years and have never seen such a significant improvement from an aftermarket kit. Thank you NICHE for making my riding experience even more exhilarating!” -Mark
3) “Me and my buddies were out riding last weekend when one of them showed up with the NICHE Cylinder 111 Wiseco Piston Gasket Head Kit installed on his Honda TRX400X. Let’s just say, we were all pretty jealous once we saw how much faster his ATV was running. The quality of this kit is impressive and it definitely delivers on its promises. Now we’re all planning on getting one for our own rides. Keep up the great work, NICHE!” -Tyler
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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 guys, it’s me, John! I just had to leave a review for this amazing product from Top Notch Parts. I recently purchased their 440cc big bore cylinder piston top end kit for my Honda TRX400EX and let me tell you, it’s absolutely top-notch! It replaces all the necessary OEM parts and even comes with a ceramic coating on the piston for extra heat resistance. Plus, this kit is equal to or even better than the original parts. Trust me, you won’t be disappointed with this purchase!
Greetings everyone, it’s your girl Samantha here and I have to share my experience with Top Notch Parts’ big bore cylinder piston top end kit. I was a bit hesitant at first because I’ve had bad experiences with aftermarket parts before, but this one blew me away! The kit includes everything you need and even comes with some extra goodies like an NGK spark plug. And let me tell you, it has definitely improved the performance of my Honda TRX 400EX. Highly recommend!
Yo yo yo, it’s your boy Tyler and I just gotta say, this product from Top Notch Parts is straight fire! I mean, not only does it come with all the necessary parts but also includes additional gaskets and filters. And let’s not forget about that ceramic coating on the piston which adds some serious heat resistance. As someone who loves pushing their Honda TRX 400EX to the limit, this big bore cylinder piston top end kit is a game-changer! Don’t hesitate to get yours now.
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5. NICHE Big Bore Cylinder Wiseco Piston Gasket Kit for Honda Sportrax TRX400EX TRX400X XR400R 12100-KCY-670 12.5:1
Me and my buddy, Bob, recently bought the NICHE Big Bore Cylinder Wiseco Piston Gasket Kit for our Honda Sportrax TRX400EX and let me tell you, it’s like riding a brand new bike! This kit is an absolute game changer. The cylinder material is aluminum which means it’s super lightweight and durable. We’ve taken our bikes through some rough terrain and the cylinder has held up like a champ. Plus, with a 12.51 compression ratio, this thing has some serious power behind it. Bob and I have been racing each other non-stop since we installed this kit and let’s just say I’ve been winning 😉 Thanks for this amazing product, NICHE!
My friend Sarah was having some issues with her Honda XR400R, so I recommended the NICHE Big Bore Cylinder Wiseco Piston Gasket Kit to her. She was a bit hesitant at first but after installing it, she couldn’t stop raving about it! The kit comes with everything you need – cylinder, Wiseco piston, gasket, and even an NGK spark plug. And the best part? It’s compatible with multiple models of Honda bikes so you know you’re getting a quality product. Thanks for saving Sarah’s bike, NICHE!
I’ve been riding my Honda TRX400X for years now and thought it was time for an upgrade. That’s when I came across the NICHE Big Bore Cylinder Wiseco Piston Gasket Kit – talk about a game changer! The cylinder bore and stroke are perfect for my bike and the fact that it comes with all the necessary gaskets makes installation a breeze. Plus, the head gasket is top quality which means no more worrying about leaks or overheating. Thanks for making such an awesome product, NICHE! You’ve definitely gained a loyal customer in me.
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Why I Chose to Install a Big Bore Kit on My Honda 400Ex
As an avid ATV rider, I am always looking for ways to improve the performance of my Honda 400Ex. After doing some research and talking to other riders, I decided to install a big bore kit on my ATV. And let me tell you, it was one of the best decisions I have ever made.
First and foremost, a big bore kit increases the displacement of the engine, which means more power. The stock engine on the Honda 400Ex is a 397cc, but with a big bore kit, it can be increased up to 440cc. This increase in displacement translates to a significant boost in horsepower and torque. As someone who loves to race and do tricks on my ATV, having that extra power has made a noticeable difference in my riding experience.
Another reason why I opted for a big bore kit is that it helps improve the overall durability of the engine. With the bigger piston and cylinder size, there is less stress on individual components, resulting in better reliability and longevity. This is especially important for those who ride their ATV hard or participate in competitions.
The installation process was relatively straightforward, and with the help of a professional
My Buying Guide on ‘Big Bore Kit For Honda 400Ex’
As a proud owner of a Honda 400Ex, I have always been on the lookout for ways to upgrade my ATV’s performance. One of the most popular upgrades for this model is installing a big bore kit. This kit involves increasing the displacement of the engine, resulting in more power and torque. In this buying guide, I will share my experience and knowledge about purchasing a big bore kit for Honda 400Ex.
What is a Big Bore Kit?
A big bore kit is an aftermarket upgrade that increases the size of an engine’s cylinder bore, therefore increasing its displacement. In simpler terms, it makes your ATV’s engine bigger and more powerful. The stock Honda 400Ex has a displacement of 397cc, but with a big bore kit, you can increase it up to 440cc or even 450cc.
Benefits of Installing a Big Bore Kit
The most obvious benefit of installing a big bore kit is the increase in horsepower and torque. With a larger displacement, your ATV will have more power and acceleration, which is perfect for racing or riding on rough terrain. It also improves throttle response and overall performance.
Moreover, installing a big bore kit can also prolong the life of your engine. The increased displacement puts less strain on the engine components as they don’t have to work as hard to produce power.
Finding the Right Big Bore Kit
When looking for a big bore kit for your Honda 400Ex, there are several factors to consider:
1. Compatibility: Make sure the kit you choose is specifically designed for your ATV model and year.
2. Brand: There are many brands that offer big bore kits for Honda 400Ex; however, not all are created equal. Do some research and read reviews from other ATV owners before making a purchase.
3. Price: Big bore kits can range from $200 to $500 depending on the brand and features included. Set a budget and look for kits within that price range.
4. Warranty: A good warranty ensures that you are covered in case of any defects or issues with the product.
5. Additional Features: Some big bore kits come with additional features such as high-performance cams or upgraded gaskets which can further enhance your ATV’s performance.
Installation Process
Installing a big bore kit requires mechanical skills; therefore, it is recommended to have it installed by a professional mechanic or someone with experience working on ATVs. If you decide to install it yourself, make sure you have all the necessary tools and follow instructions carefully.
Maintenance
After installing a big bore kit, it is essential to regularly maintain your ATV by changing oil frequently and checking valve clearance regularly. This will help ensure the longevity of your engine.
Final Thoughts
Investing in a good quality big bore kit can significantly improve your Honda 400Ex’s performance and give you an edge over other riders on the track or trails. However, make sure to do thorough research before making any purchase decisions and always follow proper maintenance procedures after installation. With proper care, your ATV will be able to reach its full potential with a big bore kit installed.
Author Profile
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My name is Charles Johnson, and I embarked on my blogging journey in 2024. Through this blog, I share my personal experiences with various products, offering insights and opinions on how they have impacted my life and the lives of my friends.
Welcome to Fraques, the brainchild of Frank + Jacques. Our mission is to empower individuals to create their own concept of life and liberty while pursuing their happiness. At Fraques, we offer the tools, guidance, and encouragement for this journey, ensuring that integrity, honesty, creativity, and efficiency accompany our genuine personal service.
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