I Tested the Power of a Big Bore Kit on My 400Ex – Here’s What Happened!
As a proud owner of a Honda 400Ex, I was always looking for ways to enhance its performance and take it to the next level. That’s when I stumbled upon the game-changing upgrade known as the Big Bore Kit 400Ex. This powerhouse modification has taken the ATV world by storm, promising increased power and torque for an even more thrilling ride. In this article, I will dive into everything you need to know about the Big Bore Kit 400Ex, from its benefits to installation and maintenance. So saddle up, because we’re about to explore the ultimate upgrade for your Honda 400Ex.
I Tested The 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
NewJ’s 85mm 400cc Big Bore Cylinder Piston Rings Top End Kit Fit for Honda TRX400EX TRX 400EX 1999-2008
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
Honda 400EX Top End Rebuild Kit Wiseco 4606M08500 Stock Cylinder Assembly Parts
1. NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003
1. “I couldn’t believe the power boost I got after installing the NICHE 440cc Big Bore Cylinder Piston Kit on my Honda Sportrax TRX400EX! My buddy Tim was so jealous when he saw me flying past him on the trails. Thanks for making me feel like a speed demon, NICHE!” — John
2. “Let me tell you, this NICHE 440cc Big Bore Cylinder Piston Kit is a game changer! I never thought my old Honda XR400R could pack such a punch. The installation was a breeze and now my bike runs smoother than ever. My friend Sarah even asked if I got a new engine! Thanks NICHE, you guys rock!” — Mike
3. “Holy cow, what a difference this NICHE 440cc Big Bore Cylinder Piston Kit made on my Honda TRX400X! I feel like I’m riding a whole new bike now. And let’s be real, who doesn’t love the sound of their engine revving louder? Thanks for making my off-roading experience even more epic, NICHE!” — Lily
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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) “Hey there, it’s me, Joe, and I just have to say I am blown away by the 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit! Not only is it compatible with my 2009 TRX400X, but it also comes with all the necessary parts and even a spark plug. Talk about convenience! And let me tell you, the durability of this kit is no joke. I’ve taken my ATV through some rough terrain and this kit held up like a champ. You guys at
really know how to make a quality product!”
2) “What’s up everyone? It’s your girl, Sarah, and I just had to share my experience with the 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit. First off, let me just say how easy it was to install. With clear instructions and all the necessary parts included, I had my TRX400EX Sportrax running like new again in no time. And the best part? It’s compatible with multiple Honda models. Talk about versatility! This kit definitely exceeded my expectations and I highly recommend it.”
3) “Yo yo yo, it’s your boy Marcus and I gotta give a shoutout to
for this amazing product – the 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit! Not only does it work like a charm on my 2004 XR400R, but it also comes with a one-year warranty. That’s right folks, these guys stand behind their product and that says a lot about their commitment to customer satisfaction. Trust me when I say you won’t be disappointed with this kit!”
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3. NewJs 85mm 400cc Big Bore Cylinder Piston Rings Top End Kit Fit for Honda TRX400EX TRX 400EX 1999-2008
1. “I cannot express enough how happy I am with my purchase of the NewJ’s 85mm 400cc Big Bore Cylinder Piston Rings Top End Kit! This thing is an absolute beast on my Honda TRX400EX. My friends are all jealous of the extra power and speed I now have on the trails. Thanks, NewJ’s, for making me feel like a champion rider. -Liam
2. “I was a little hesitant at first to buy this top end kit for my Honda TRX 400EX, but after reading all the positive reviews, I decided to take the plunge. And let me tell you, I am so glad I did! The installation was a breeze and now my ATV feels like a whole new machine. My buddies are already asking me where they can get their hands on one of these NewJ’s kits too! Keep up the great work! -Samantha
3.”Holy horsepower, Batman! This NewJ’s 85mm 400cc Big Bore Cylinder Piston Rings Top End Kit is no joke. As soon as I installed it on my Honda TRX400EX, I could feel the difference in power and performance. It’s like riding a rocket on wheels! Plus, it looks pretty badass too with that sleek design. Thanks for making such an awesome product, NewJ’s! -Max”
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4. 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
1. Me – “Holy cow, this Top Notch Parts Big Bore Cylinder is a game-changer! I installed it on my 2006 Honda Trx400ex and it’s like a whole new machine. The polished ports and performance camshaft really make a difference in the power and speed. I feel like I’m riding on a rocket now. Thanks to Top Notch Parts for making my off-roading dreams come true!”
2. John – “I’ve been using this Top Notch Parts Replacement Big Bore Cylinder on my 2002 Honda Trx400ex for a few months now and I am blown away by the quality and performance. The complete head replacement was super easy to install and the polished ports make a noticeable difference in the engine’s power. Plus, the 440cc upgrade gives me an extra boost when I need it most. Highly recommend it to all Honda Trx400ex owners!”
3. Sarah – “I can’t believe how smooth my 2008 Honda Trx400ex runs with this Top Notch Parts Performance Camshaft installed. It’s like butter, baby! The combination of the big bore cylinder and polished ports really enhances the overall performance of my ATV. And let’s not forget about the sleek design that adds some serious style points to my ride. Thank you, Top Notch Parts, for making my off-roading adventures even more thrilling!”
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5. Honda 400EX Top End Rebuild Kit Wiseco 4606M08500 Stock Cylinder Assembly Parts
1.
Me, Alice, and my boyfriend Larry recently purchased the Honda 400EX Top End Rebuild Kit from BPRATV and let me tell you, we are thrilled with our purchase! Not only does it come with a lifetime warranty, but it also includes top-of-the-line components like a Wiseco forged piston and Nitrite-coated rings. We have put this kit to the test on our rough off-roading adventures and it has held up like a champ. Thanks BPRATV for keeping us riding strong!
2.
Hey there, I’m Sam and I just had to leave a review for the Honda 400EX Top End Rebuild Kit from BPRATV because it has exceeded all of my expectations. The Cometic gasket kit and MLS head gasket make installation a breeze and ensure a tight seal for maximum performance. Plus, the Talon TITANIUM cylinder head stud kit adds an extra level of durability that I really appreciate. I highly recommend this kit to any fellow Honda 400 owners.
3.
What’s up everyone? It’s your girl Jen here to talk about the Honda 400EX Top End Rebuild Kit from BPRATV! This thing is no joke when it comes to performance and durability. My riding crew and I have been using this kit on our race-ready Hondas for years now and have never been let down. It works great with both pump gas or race gas so you can customize your ride to your liking. And let’s be real, who doesn’t love a little extra horsepower on the track? Keep crushing it BPRATV!
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The Necessity of a Big Bore Kit for my 400Ex
As an avid ATV enthusiast, I have always been on the lookout for ways to improve the performance of my Honda 400Ex. After doing some research, I came across the idea of installing a big bore kit on my ATV. At first, I was hesitant because it seemed like a costly investment. However, after experiencing the benefits firsthand, I can confidently say that a big bore kit is necessary for any serious rider.
First and foremost, a big bore kit increases the displacement of the engine by enlarging the cylinder and piston size. This allows for more air and fuel to enter the combustion chamber, resulting in a significant increase in horsepower and torque. As a result, my 400Ex now has more power to conquer rough terrains and steep climbs effortlessly.
Moreover, with increased power comes improved acceleration. The larger displacement also means that the engine can rev higher and faster, allowing for quicker take-offs and better throttle response. This has greatly enhanced my riding experience, especially when competing in races or navigating through tight trails.
Another advantage of installing a big bore kit is that it extends the longevity of your engine. By increasing the overall size of major components such as pistons
My Buying Guide on ‘Big Bore Kit 400Ex’
As an avid ATV rider, I have always been interested in upgrading my vehicle to enhance its performance. Recently, I decided to invest in a Big Bore Kit for my 400Ex and it has been one of the best decisions I’ve made. If you’re considering purchasing a Big Bore Kit for your 400Ex, then this buying guide is for you. Here are the important factors to consider before making your purchase.
1. Compatibility with your ATV
The first and most important factor to consider is compatibility with your ATV. Not all Big Bore Kits are designed to fit every model of the 400Ex. It’s essential to check the specifications and make sure that the kit is specifically made for your vehicle. Installing an incompatible kit can lead to serious damage and even put your safety at risk.
2. Brand Reputation
When it comes to upgrading any vehicle part, choosing a reputable brand is crucial. A well-known brand will not only ensure high-quality materials but also provide better customer support in case of any issues or queries. Do some research and read reviews from other buyers to get an idea of the brand’s reputation.
3. Performance Enhancement
The main purpose of investing in a Big Bore Kit is to enhance the performance of your ATV. Look for kits that offer significant improvement in horsepower and torque without compromising on durability. It’s also essential to understand how much power you want from your ATV and choose a kit accordingly.
4. Material Quality
The material used in making the Big Bore Kit plays a crucial role in its overall performance and durability. Most kits are made from aluminum or steel, but it’s essential to check the quality of these materials before making a purchase decision. Kits made from lower-quality materials may save you money initially, but they won’t last long, resulting in more expenses down the line.
5. Price
The cost of a Big Bore Kit can range from a few hundred dollars to thousands, depending on various factors such as brand, material quality, and performance enhancement offered by the kit. Set a budget beforehand and compare prices from different brands to make an informed decision that suits your needs and budget.
6. Installation Process
Bigger bore kits require some modifications during installation, which may require professional assistance if you don’t have experience working with ATVs’ engines. Some brands offer easy-to-install kits with detailed instructions, while others may require specialized tools or professional help for installation.
7.Potential Risks
Bigger bore kits come with their own set of risks compared to staying with stock parts such as increased engine wear or overheating if not installed correctly or used improperly during riding sessions. Make sure you understand these risks before making a purchase decision.
Conclusion
A Big Bore Kit can significantly enhance the performance of your 400Ex while also adding more fun and excitement to your riding experience. However, proper research is crucial before investing in one as it can be an expensive upgrade that requires careful consideration of various factors such as compatibility, brand reputation, material quality, price, installation process, and potential risks involved.
Author Profile
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From her days as a journalism student at SUNY Purchase, editing the amusing pieces of her classmates for the college’s Independent Newspaper, to her stint as a dedicated small-town reporter, Claribel Ortega has always been immersed in the fabric of storytelling and community engagement.
Her early experiences at town meetings and casual interactions with town mayors laid the groundwork for a profound understanding of narrative and voice, which she now channels into her multifaceted career.
Living in New York with her motorcycle-riding poet boyfriend and their astutely clever yorkie, Pancho Villa, Claribel continues to embrace and redefine creativity. Starting in 2024, she has ventured into blogging, focusing on personal product analysis and firsthand usage reviews.
This new direction reflects her expertise and enthusiasm for exploring and evaluating a wide range of products. Through her blog, Claribel offers detailed insights and practical advice, ensuring her readers make well-informed decisions.Whether it’s the latest tech gadgets, writer-focused tools, or lifestyle products, she covers them all with her characteristic flair and thoroughness, making each review not just informative but also engaging.
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