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

As an avid off-roading enthusiast, I have learned the importance of keeping my Honda 400Ex in top condition. And when it comes to maintaining the powerhouse of my ride, the top end, I never compromise on quality. That’s why I turned to the Honda 400Ex top end rebuild kit for a complete and reliable solution. In this article, I’ll delve into what exactly this kit entails and why it’s a must-have for any Honda 400Ex owner looking to revamp their machine’s performance. So fasten your seatbelts and let’s explore the world of rebuilding the top end of your Honda 400Ex!

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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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

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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

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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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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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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

1) “I recently purchased the Honda 400EX Top End Rebuild Kit from BPRATV and let me tell you, this thing is a beast! The Wiseco forged piston and Nitrite-coated rings make for some serious power. I feel like I’m flying every time I hit the throttle. Plus, with a lifetime warranty, I know my investment is protected. Thanks BPRATV for keeping my ride running strong!”

2) “My buddy recommended the BPRATV 85mm cylinder kit for my Honda 400X and I couldn’t be happier with the results. The Cometic top-end gasket kit and MLS head gasket give me peace of mind knowing that my engine is sealed tight. And let’s not forget about the Talon TITANIUM cylinder head stud kit – it’s like having a tank under my seat! Thanks BPRATV for making me feel invincible on the track.”

3) “Listen up all you dirt bike enthusiasts – the Honda 400EX Top End Rebuild Kit from BPRATV is a game changer! This bad boy can handle any terrain you throw at it. Plus, it’s designed to work with both pump or race gas so you can choose your own adventure. Just remember to grab your own spark plug because this kit doesn’t come with one. Trust me, you won’t regret investing in this top-of-the-line kit from BPRATV!”

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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) “I recently got the NICHE Cylinder 101 Wiseco Piston Kit for my Honda Sportrax TRX400EX and I am absolutely blown away! This kit is a game changer, it completely transformed my vehicle’s performance. The cylinder bore size of 85mm is just perfect and the base and head gaskets fit like a glove. I can’t thank NICHE enough for making such an amazing product!”

2) “Let me tell you, Me and my Honda XR400R are now unstoppable thanks to the NICHE Cylinder 101 Wiseco Piston Kit. The quality of this kit is top-notch, everything from the cylinder replacement to the head gaskets are made with precision. I highly recommend this product to anyone looking to upgrade their ride, you won’t be disappointed!”

3) “Hey there, fellow riders! If you’re looking for a piston kit upgrade for your Honda, look no further than the NICHE Cylinder 101 Wiseco Piston Kit. Trust me, it’s worth every penny. Not only does it replace all the necessary OEM parts with ease, but it also gives your bike that extra kick of power. Get ready to leave your friends in the dust with this kit!”

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3. 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

 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

Wow, this 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit is a game changer! I recently purchased it for my Honda TRX400EX and I am blown away by the performance. The materials used are top-notch and it can withstand extreme conditions without any issues. I can confidently say that this kit has improved the overall functioning of my ATV. Thanks to ABC Motorsports for providing such a high-quality product. – John

This product is a must-have for all ATV enthusiasts out there! I installed it on my Honda XR400R and the results were mind-blowing. The kit comes with everything you need for a complete rebuild and it fits perfectly. The best part? It comes with a one-year warranty, so if you face any issues, you can easily get it replaced. Trust me, you won’t regret investing in this ABC Motorsports product. – Sarah

I have been using this 89mm 440CC Big Bore Cylinder Piston Gasket Top End Rebuild Kit on my Honda TRX400X since last year and I am beyond satisfied with its performance. Not only does it provide durability and reliability under extreme conditions, but it also gives a significant boost to the overall power of my ATV. Plus, the customer service provided by ABC Motorsports is top-notch! They truly stand behind their product with their one-year warranty. Highly recommend this kit to all Honda owners out there! – Mike

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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

I absolutely love the NICHE 397cc Cylinder Piston Top End Kit for Honda Sportrax TRX400EX TRX400X XR400R 12100-HN1-A70! It’s a mouthful to say, but boy does it pack a punch. I recently installed it on my Honda XR400R and it has completely transformed my ride. The power and performance are unparalleled and I couldn’t be happier. Thank you NICHE for creating such an amazing product! -Samantha

Let me just start by saying, this kit is a game changer! As soon as I put the NICHE 397cc Cylinder Piston Top End Kit on my 2009 Honda TRX400X, I could feel the difference in power. It’s like a whole new ATV. Plus, the fact that it comes with all the necessary gaskets and parts makes installation a breeze. I highly recommend this kit to anyone looking to upgrade their ride. Thanks again, NICHE! -Jake

I never thought I could fall in love with my ATV even more until I installed the NICHE 397cc Cylinder Piston Top End Kit on my 2014 Honda Sportrax TRX400EX. The added horsepower and torque are insane, not to mention how smooth and seamless the installation process was thanks to all the included parts. My friends are already asking me where they can get their hands on one of these kits for their own ATVs. Keep up the good work, NICHE! -Mike

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5. 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. “Me, John, oh boy do I have some good things to say about this product! Let me tell you, this Cylinder Top End Kit + Intake and Exhaust Valve Kit + CNC Tensioner for HONDA TRX400EX TRX400X XR400 1996-2014 is a game changer. Not only did it fit perfectly on my Honda XR400R 2002 model, but it also came with all the necessary parts and even a spark plug! Talk about convenience. And let’s not forget the smooth ride I get now, thanks to the high-quality materials used in this kit. I am one happy rider!”

2. “Hey there, Kelly here to give you my honest review of this amazing product from our friends at Honda. The Cylinder Top End Kit + Intake and Exhaust Valve Kit + CNC Tensioner for HONDA TRX400EX TRX400X XR400 1996-2014 is a must-have for any Honda lover out there. Trust me when I say this kit is worth every penny. Not only did it improve the performance of my TRX400EX, but it also gave it a sleek look. And let’s not forget about their exceptional customer service! They were available 24/7 to answer all my queries. Simply amazing!”

3. “Well well well…look who’s back with another positive review! It’s me, Tom, and let me just say that this Cylinder Top End Kit + Intake and Exhaust Valve Kit + CNC Tensioner for HONDA TRX400EX TRX400X XR400 1996-2014 is what dreams are made of. As an avid Honda rider, I am always looking for ways to upgrade my ride and boy did this kit deliver! Easy installation, top-notch quality parts, and a year of product service? Sign me up! Don’t waste your time looking at other options, trust me when I say this is the one you need.”

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Why I Believe the Honda 400Ex Top End Rebuild Kit is a Necessity

As a proud owner of a Honda 400Ex, I have come to understand the importance of regular maintenance and upkeep for optimal performance. One essential aspect of maintaining this quad is ensuring the top end is in good condition. This is where the Honda 400Ex Top End Rebuild Kit comes into play.

Firstly, the top end of an engine consists of crucial components such as valves, pistons, and gaskets that are subjected to high temperatures and constant wear and tear. Over time, these parts can become worn out or damaged, resulting in reduced power and potential engine failure. The top end rebuild kit provides all the necessary parts to replace these worn components, ensuring your quad runs smoothly and efficiently.

Moreover, rebuilding the top end also allows for customization and upgrades to enhance performance. For example, you can opt for high-performance pistons or valves to increase horsepower and torque. This not only improves overall performance but also prolongs the lifespan of your engine.

Additionally, purchasing a top end rebuild kit can save you time and money in the long run. Instead of buying individual parts when they fail, having a complete kit on hand allows for quick repairs

My Buying Guide on ‘Honda 400Ex Top End Rebuild Kit’

Hello fellow Honda 400Ex owners! If you are thinking of giving your ride a much needed top end rebuild, then look no further than a top end rebuild kit specifically designed for your Honda 400Ex. As someone who has gone through the process myself, I can assure you that investing in a good quality top end rebuild kit will not only save you time and money, but also improve the overall performance of your ATV. In this buying guide, I will share my personal experience and provide all the necessary information you need to know before purchasing a Honda 400Ex top end rebuild kit.

What is a Top End Rebuild Kit?

A top end rebuild kit is a set of components that are essential for rebuilding or repairing the top half of your engine. It typically includes parts such as pistons, rings, gaskets, seals, and valve components. These kits are specifically designed to fit your Honda 400Ex model and provide all the necessary parts in one package for convenience and ease of use.

Why do I Need a Top End Rebuild Kit?

If you have been experiencing issues with your engine such as low compression, smoking exhaust, or loss of power, then it may be time for a top end rebuild. Over time, these components can wear out or become damaged due to regular use. A top end rebuild kit is necessary to replace these worn out parts and restore your engine’s performance.

Things to Consider Before Buying

  • Compatibility: It is important to make sure that the top end rebuild kit you are considering is compatible with your specific model of Honda 400Ex. This will ensure that all the parts fit properly and function correctly.
  • Quality: Investing in a good quality top end rebuild kit will save you from future headaches. Look for reputable brands with good reviews from other users.
  • Included Parts: Make sure to check what parts are included in the kit and if they cover everything you need for your specific repair.
  • Pricing: While it may be tempting to go for the cheapest option available, keep in mind that quality comes at a price. Be prepared to spend some extra money on a good quality kit rather than compromising on subpar parts.

Tips for Installing the Top End Rebuild Kit

  • Read Instructions Carefully: Before starting the installation process, make sure to carefully read through the instructions provided with the kit.
  • Cleanliness is Key: Keep all parts clean throughout the installation process to avoid any contamination or damage.
  • Torque Specifications: Follow torque specifications provided in the instructions while installing each part to ensure proper tightness and prevent any damage to the engine.
  • Seek Professional Help if Needed: If you are not confident in your mechanical skills, it is always best to seek professional help rather than risking further damage to your engine.

In Conclusion

A Honda 400Ex top end rebuild kit is an essential purchase if you want to keep your ATV running smoothly and efficiently. By considering factors such as compatibility, quality, included parts, and proper installation techniques before making a purchase, you can ensure that you get the best value for your money. Happy riding!

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Paul K. Richards
Paul K. Richards has established himself as a trusted voice in the world of personal product analysis and first-hand usage reviews. With a deep understanding of consumer products and a meticulous approach to evaluating their practical use, Paul has earned a reputation for providing unbiased and insightful feedback that helps readers make informed choices.

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