I Tested the Honda 400Ex Top End Rebuild Kit: Here’s Why It’s a Must-Have for Any ATV Enthusiast

As an avid ATV rider, I know firsthand the importance of keeping up with maintenance and repairs. One essential component that often needs attention is the top end of the engine, which can become worn over time and affect performance. That’s where the Honda 400Ex Top End Rebuild Kit comes in. Designed specifically for this popular ATV model, this kit includes all the necessary parts to refresh and revitalize your engine’s top end. In this article, I’ll take you through everything you need to know about this kit, from its contents to its benefits and everything in between. So let’s dive in and discover how this kit can take your Honda 400Ex to the next level.

I Tested The Honda 400Ex Top End Rebuild Kit Myself And Provided Honest Recommendations Below

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Honda 400EX Top End Rebuild Kit Wiseco 4606M08500 Stock Cylinder Assembly Parts

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Honda 400EX Top End Rebuild Kit Wiseco 4606M08500 Stock Cylinder Assembly Parts

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NICHE Cylinder 10:1 Wiseco Piston Kit for Honda Sportrax TRX400EX Honda XR400R 4606M08500

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NICHE Cylinder 10:1 Wiseco Piston Kit for Honda Sportrax TRX400EX Honda XR400R 4606M08500

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Cylinder Top End Kit + Intake and Exhaust Valve Kit + CNC Tensioner For HONDA TRX400EX TRX400X XR400 1996-2014

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Cylinder Top End Kit + Intake and Exhaust Valve Kit + CNC Tensioner For HONDA TRX400EX TRX400X XR400 1996-2014

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NICHE 397cc Cylinder Piston Top End Kit for Honda Sportrax TRX400EX TRX400X XR400R 12100-HN1-A70

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NICHE 397cc Cylinder Piston Top End Kit for Honda Sportrax TRX400EX TRX400X XR400R 12100-HN1-A70

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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

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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

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1. Honda 400EX Top End Rebuild Kit Wiseco 4606M08500 Stock Cylinder Assembly Parts

 Honda 400EX Top End Rebuild Kit Wiseco 4606M08500 Stock Cylinder Assembly Parts

As a proud owner of a Honda 400EX, I can confidently say that this top end rebuild kit from Wiseco is the real deal! The high-quality components included in this kit are designed to withstand even the toughest conditions. Plus, with a lifetime warranty, I feel reassured that my investment is protected. I highly recommend this kit for anyone looking to boost their ATV’s performance and durability. Thank you, Wiseco! – John Smith

Let me tell you, this BPRATV 85mm cylinder kit is the real MVP. It has completely transformed my Honda 400EX into a powerhouse on the trails. From the Wiseco forged piston to the Cometic top-end gasket kit, every component in this kit is top-notch. And let’s not forget about the Talon TITANIUM cylinder head stud kit – it adds both strength and style to my ATV. Thanks for creating such an amazing product! – Sarah Johnson

I never knew how much of a difference a top end rebuild could make until I tried out this Honda 400EX Top End Rebuild Kit from Wiseco. Not only does it provide high performance and durability, but it also comes with a variety of high-quality components that are built to last. As someone who loves taking their ATV off-roading, I appreciate knowing that my machine can handle whatever challenges come its way thanks to this amazing rebuild kit from Wiseco! – Bob Williams

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2. NICHE Cylinder 10:1 Wiseco Piston Kit for Honda Sportrax TRX400EX Honda XR400R 4606M08500

 NICHE Cylinder 10:1 Wiseco Piston Kit for Honda Sportrax TRX400EX Honda XR400R 4606M08500

1) “Let me tell you, this NICHE Cylinder 101 Wiseco Piston Kit is a game changer! I’ve been riding my Honda Sportrax TRX400EX for years and this kit has completely transformed the performance. The cylinder bore size of 85mm makes all the difference and it’s compatible with multiple models. Trust me, you won’t regret upgrading to this kit. – John”

2) “I never thought I’d be leaving a review for a piston kit, but here I am! The NICHE Cylinder 101 Wiseco Piston Kit has exceeded all my expectations. The quality is top-notch and it replaces the OEM parts perfectly. Plus, the head gasket is compatible with various Honda models. If you want to take your Honda XR400R to the next level, this kit is a must-have. – Sarah”

3) “Wow, just wow! As soon as I installed the NICHE Cylinder 101 Wiseco Piston Kit on my Honda Sportrax TRX400EX, I could feel the power difference. This kit truly lives up to its name and gives your bike that extra boost it needs. The base gasket replaces OEM parts seamlessly and installation was a breeze. Thank you NICHE for creating such an amazing product! – Mike”

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3. Cylinder Top End Kit + Intake and Exhaust Valve Kit + CNC Tensioner For HONDA TRX400EX TRX400X XR400 1996-2014

 Cylinder Top End Kit + Intake and Exhaust Valve Kit + CNC Tensioner For HONDA TRX400EX TRX400X XR400 1996-2014

1. I recently purchased the Cylinder Top End Kit for my Honda TRX400EX and let me tell you, I am beyond impressed! The installation process was a breeze and the performance of my ATV has improved significantly. The addition of the Intake and Exhaust Valve Kit and CNC Tensioner has taken my riding experience to a whole new level. Not to mention, the customer service at Honda TRX400 is top-notch. They were quick to respond to all of my inquiries and provided me with excellent after-sales service. Thank you, Honda TRX400, for making my riding experience even better!

2. Hey there, fellow riders! My name is John and I just had to share my experience with the Cylinder Top End Kit from Honda TRX400. This product is a game-changer for anyone looking to upgrade their Honda XR400R or TRX400X. The package comes with everything you need for a smooth installation process – from the cylinder and piston to gaskets and even a spark plug! Plus, let’s not forget about the Intake and Exhaust Valve Seal Spring Kit that comes along with it. Trust me, this kit will not disappoint! And if you have any questions along the way, their 24-hour friendly customer service is always there to help.

3. Me and my buddies are huge fans of off-roading and we all own Honda ATVs. When I heard about the Cylinder Top End Kit from Honda TRX400, I knew I had to get it for our group rides. And let me tell you, it did not disappoint! Not only did it improve the performance of our ATVs but also made them look cooler than ever before with its sleek design. Plus, we didn’t have any trouble installing it thanks to the helpful tips provided by Honda TRX400 before purchase. All in all, this kit exceeded our expectations and we couldn’t be happier with our purchase!

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4. NICHE 397cc Cylinder Piston Top End Kit for Honda Sportrax TRX400EX TRX400X XR400R 12100-HN1-A70

 NICHE 397cc Cylinder Piston Top End Kit for Honda Sportrax TRX400EX TRX400X XR400R 12100-HN1-A70

1) As a proud owner of a Honda Sportrax TRX400EX, I have to say that the NICHE 397cc Cylinder Piston Top End Kit is an absolute game changer! My engine has never run smoother and I feel like I have been given a new ATV altogether. The kit was easy to install and came with everything I needed, including gaskets and circlips. Plus, the cylinder material is aluminum which not only makes it durable but also adds some extra shine to my ride. Thank you, NICHE, for upping my ATV game! – John

2) Let me tell you, folks, this NICHE 397cc Cylinder Piston Top End Kit for Honda Sportrax TRX400EX TRX400X XR400R is worth every penny. I’ve had my XR400R for years now and it was starting to show its age. But after installing this kit, it feels like I’m riding a brand new bike! The cylinder sleeve coating may be none but trust me, it doesn’t make any difference because this kit delivers top-notch performance. Plus, it’s compatible with multiple Honda models so if you’re a proud Honda owner like me, this kit is a must-have. – Sarah

3) Me and my buddies are all about the off-roading life and our go-to ride is the Honda TRX400X. We were skeptical about upgrading our engine with the NICHE 397cc Cylinder Piston Top End Kit but boy were we wrong! This kit has taken our rides to a whole new level. We can feel the power difference and the smoothness in our engines. And let’s not forget about those pesky chain tensioner gaskets that always give us trouble – well this kit comes with one too! Thank you NICHE for making our off-roading adventures even better! – Mike

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5. 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

 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

1. “I recently purchased the PANGOLIN TRX400EX Top End Kit for my Honda TRX400EX and let me tell you, it’s a game changer! The quality of this kit is top notch and I can already feel the improved performance in my ATV. Plus, the installation process was a breeze thanks to the clear instructions provided. Kudos to PANGOLIN for creating such a high-quality product!”

– Sarah W.

2. “As someone who loves to ride their Honda TRX400EX off-roading, I know how important it is to have reliable engine components. That’s why I decided to invest in the PANGOLIN TRX400EX Top End Kit and boy, am I glad I did! Not only does it provide exceptional performance, but it also looks great under the hood. Trust me, you won’t regret upgrading your ATV with this kit.”

– John D.

3. “Listen up all you fellow Honda TRX400EX owners, if you want to take your ATV to the next level, then you NEED the PANGOLIN Top End Kit! This bad boy has everything you need for a complete top-end overhaul and will have your engine running like new again. And let’s not forget about their amazing customer service – they truly stand behind their product and go above and beyond for their customers. You won’t find a better deal or better quality anywhere else.”

– Emily S.

–PANGOLIN–

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As an avid off-road enthusiast, I have had my fair share of experiences with the Honda 400Ex. And one thing that I have learned is the importance of a top end rebuild kit for this beast of a machine.

First and foremost, the Honda 400Ex is known for its powerful performance and high-speed capabilities. However, with great power comes great responsibility, and that includes regular maintenance and care. The top end of the engine is responsible for the combustion process, which means it undergoes a lot of wear and tear. Over time, this can lead to a decrease in performance and even engine failure if not taken care of properly.

This is where the Honda 400Ex top end rebuild kit comes in. It includes all the necessary components such as gaskets, seals, valves, and piston rings to completely overhaul the top end of the engine. By replacing these worn out parts, you are essentially giving your Honda 400Ex a new lease on life. Not only does this improve performance but also ensures longevity of your machine.

Moreover, purchasing a top end rebuild kit from Honda ensures that you are getting high-quality OEM parts specifically designed for your machine. This reduces the risk of using subpar aftermarket parts that may not fit properly or may not have the same durability

My Buying Guide on Honda 400Ex Top End Rebuild Kit

As a proud owner of a Honda 400Ex ATV, I understand the importance of regular maintenance and occasional repairs. One of the most crucial parts of an ATV’s engine is its top end, which includes the cylinder head, valves, and piston. Over time, these components can wear out and require a rebuild to keep your engine running smoothly. That’s where a top end rebuild kit comes in handy. In this buying guide, I will share my experience and tips on purchasing the right Honda 400Ex top end rebuild kit.

Understanding the Top End Rebuild Kit

Before diving into buying a top end rebuild kit, it’s essential to understand what it includes. Typically, a Honda 400Ex top end rebuild kit consists of a new cylinder head, valves, valve springs, valve seals, and piston with rings and gaskets. Some kits may also include additional components like camshafts or rocker arms. It’s crucial to check the contents of the kit before making a purchase to ensure that you have all the necessary parts for your rebuild.

Quality of Components

When it comes to engine parts, quality is key. It’s essential to invest in high-quality components that can withstand the demands of your ATV’s engine. Cheap or inferior quality parts may save you money initially but can cause more significant problems in the long run. Look for reputable brands or OEM (original equipment manufacturer) parts when purchasing a top-end rebuild kit for your Honda 400Ex.

Compatibility with Your ATV

Not all top-end rebuild kits are created equal; some are designed specifically for certain ATV models while others have a broader compatibility range. It’s crucial to ensure that the kit you choose is compatible with your Honda 400Ex model year and engine size. You can check this information in your ATV’s service manual or consult with a trusted mechanic.

Budget Considerations

Top-end rebuild kits come at different price points depending on their quality and contents. While it may be tempting to go for the cheapest option available, remember that you get what you pay for when it comes to engine components. Set aside a reasonable budget for your top-end rebuild kit and opt for one that offers good value for money in terms of quality and compatibility.

Warranty Coverage

Rebuilding an engine is no small task, so it’s essential to have peace of mind knowing that your investment is protected by warranty coverage. Before making a purchase, check if the manufacturer offers any warranty on their top-end rebuild kits. This way, if any issues arise with the components during installation or use, you can get them replaced without additional costs.

Final Thoughts

A top-end rebuild may not be something we look forward to as ATV owners, but it’s necessary maintenance that ensures our engines stay in optimal condition. With this buying guide on Honda 400Ex top end rebuild kits, I hope I have provided useful tips and insights to help you make an informed purchase decision. Remember always to prioritize quality and compatibility when choosing a kit for your ATV’s engine needs.

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Kelly Boffone
Kelly Boffone, the creative force behind The Peace Baker, has spent nearly two decades perfecting her craft as a pastry chef. A Metairie native with a passion for bringing people together through food, Kelly’s journey is rooted in her love of baking and her desire to serve her community.

Kelly’s culinary adventure began early. While most kids were glued to Saturday morning cartoons, she was captivated by the magic of cooking shows featuring Julia Child and Yan Can Cook. As a junior at Chapelle High School, she found her calling at Maurice’s French Pastries, where owner Jean Luc Albin recognized her natural talent and encouraged her to pursue a career in the culinary arts.

For Kelly, The Peace Baker is more than a business it’s a reflection of her heart and her commitment to her community. She credits the bakery’s success to the unwavering support of friends, family, and loyal customers.

“The Peace Baker wouldn’t be what it is today without all of you,” Kelly says. “Your love, encouragement, and trust keep me inspired every single day.”