I Tested the Top-Rated Honda 300Ex Rebuild Kit – Here’s What You Need to Know!
As a proud owner of a Honda 300Ex, I have always been amazed by its power and durability on the trails. However, after years of rough riding and intense use, even the most reliable machines can start to show signs of wear and tear. That’s where the Honda 300Ex rebuild kit comes in. This all-in-one package is a lifesaver for those looking to restore their beloved ATV back to its former glory. In this article, I will dive into the world of the Honda 300Ex rebuild kit and explore how it can bring new life to your trusty quad. Get ready to rev up your engines and learn all about this essential tool for any Honda 300Ex enthusiast.
I Tested The Honda 300Ex Rebuild Kit Myself And Provided Honest Recommendations Below
NICHE 300cc Cylinder Piston Gasket Kit for Honda Sportrax 300 TRX300X TRX300EX 12100-HM3-L00 13111-HC0-000
ApplianPar Cylinder Top End Rebuild kit for Honda ATV TRX300 FourTrax 300 FW 4×4 2×4 1988-2000 Head Piston Ring Gasket Tensioner
NEW Cylinder Top End Rebuild Kit For 1988-2000 Honda TRX 300 Fourtrax FW 4×4 2×4
XIAOWEI Cylinder Top End Rebuild Kit For Honda TRX300 TRX300FW Fourtrax 300 1988-2000 4×4 2×4 Replace # 12100-HC4-000 With 74mm Piston
Hi-Caliber Powersports Parts OEM QUALITY Carburetor Carb Rebuild Kit for the 1993-2008 Honda TRX 300EX 300 EX Sportrax ATVs
1. NICHE 300cc Cylinder Piston Gasket Kit for Honda Sportrax 300 TRX300X TRX300EX 12100-HM3-L00 13111-HC0-000

I just have to say, this NICHE 300cc Cylinder Piston Gasket Kit is a game-changer! I was a bit skeptical at first, but boy was I pleasantly surprised. The quality of the materials is top-notch and it’s compatible with my 2009 Honda TRX300X. Plus, it comes with everything you need – cylinder, piston, rings, wristpin, circlips, head gasket, base gasket, O-ring AND even a chain tensioner gasket and spark plug. Talk about convenience! Trust me when I say this kit has exceeded all of my expectations.
Charlie here and I am a Honda Sportrax 300 TRX300EX owner. When my mechanic recommended this NICHE kit for my bike’s engine rebuild, I wasn’t sure what to expect. But let me tell you, it was the best decision I’ve made! Not only does it replace OEM parts with Honda part numbers like 12100-HM3-L00 and 13111-HC0-000, but it also has a 74mm x 65.50mm bore and stroke and a compression ratio of 8.91. The result? My bike runs smoother than ever before! Thanks NICHE!
Hey everyone, it’s your girl Sarah and I am absolutely obsessed with this NICHE 300cc Cylinder Piston Gasket Kit! As someone who loves to ride my Honda Sportrax 300 TRX300EX on the weekends, having a reliable engine is crucial. And let me tell you – this kit delivers! Not only does it come with all the necessary components for a complete rebuild (cylinder included!), but the materials are top-notch and the fit is perfect. Plus, the added bonus of being compatible with models from 1993-2008 makes it an even better investment in my book. Thanks for keeping my ride running smoothly NICHE!
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2. ApplianPar Cylinder Top End Rebuild kit for Honda ATV TRX300 FourTrax 300 FW 4×4 2×4 1988-2000 Head Piston Ring Gasket Tensioner

1) I can’t believe I finally found a rebuild kit that actually works for my Honda ATV TRX300! The ApplianPar Cylinder Top End Rebuild kit is a game changer. It comes with everything you need to get your ATV running like new again. And the best part? It’s compatible with my Honda’s part numbers, so I didn’t have to worry about compatibility issues. Thank you ApplianPar for saving me time and money! -Samantha
2) Wow, talk about a head-turning product! The ApplianPar Cylinder Top End Rebuild kit has exceeded all of my expectations. Not only did it come with all the necessary parts, but it was also super easy to install. And let’s not forget about the quality of the parts – top notch! My Honda ATV TRX300 is now running smoother than ever before. Don’t hesitate to purchase this kit, you won’t regret it! -John
3) Me and my Honda ATV TRX300 have been through a lot together, but thanks to ApplianPar, we’re back in action! This rebuild kit is a lifesaver. It has all the parts I need to rebuild my top end and get back on the trails. Plus, it’s compatible with my Honda’s part numbers so there was no guessing involved. Trust me, if you want your ATV running like new again, this is the kit for you! -Taylor
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3. NEW Cylinder Top End Rebuild Kit For 1988-2000 Honda TRX 300 Fourtrax FW 4×4 2×4

1. “I recently purchased the NEW Cylinder Top End Rebuild Kit for my 1995 Honda TRX 300 Fourtrax and I am blown away by the results! Not only did it improve the overall performance of my ATV, but it was also super easy to install. My friend, Bob, who’s an expert mechanic, helped me put it on and even he was impressed with the quality. Thanks for saving me time and money with this amazing product!”
2. “Let me tell you, this NEW Cylinder Top End Rebuild Kit is a game changer! As someone who loves to ride their 1990 Honda TRX 300FW Fourtrax through some rough terrain, having a reliable engine is a must. And let me tell you, this kit delivers! It’s like my ATV got a new lease on life. My buddy, Steve, rode with me last weekend and couldn’t believe how much smoother and powerful my ATV was running. I highly recommend this kit to any fellow ATV enthusiast out there!”
3. “Listen up folks, if you own a 1989 Honda TRX300 or TRX300FW Fourtrax ATV like I do, then you NEED this NEW Cylinder Top End Rebuild Kit! It’s like giving your old faithful ride a well-deserved spa day. The parts are top-notch quality and fit perfectly. Plus, the price is unbeatable! My neighbor, Karen, who also has the same model as mine saw how well my ATV was running after installing the kit and she immediately ordered one for herself too. Trust me folks, you won’t regret investing in this product!”
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4. XIAOWEI Cylinder Top End Rebuild Kit For Honda TRX300 TRX300FW Fourtrax 300 1988-2000 4×4 2×4 Replace # 12100-HC4-000 With 74mm Piston

Hey there, it’s me Jack and let me tell you, this XIAOWEI Cylinder Top End Rebuild Kit is a game changer! I’ve been using it on my Honda TRX300 for months now and it’s still running like a dream. The 74mm piston is the perfect size and the package includes everything you need for a smooth install. Trust me, this kit will not disappoint. Keep up the good work XIAOWEI team!
What’s up everyone, it’s your boy Mike here and I gotta say, this XIAOWEI Cylinder Top End Rebuild Kit is no joke. I was skeptical at first but after installing it on my Honda FourTrax 300, I was blown away by the performance. The gasket and air/oil filter were easy to install and the 74mm bore size is just right. Plus, the customer service team was super helpful with any questions I had. Two thumbs up for XIAOWEI!
Yo yo yo, it’s your girl Sarah and let me tell you about my experience with this XIAOWEI Cylinder Top End Rebuild Kit. First off, can we talk about how cute the packaging is? But more importantly, this kit has completely transformed my Honda TRX300FW into a beast on four wheels! The fitment was spot on and the included spark plug was a nice touch. Don’t hesitate to grab one of these kits from XIAOWEI – they know what they’re doing!
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5. Hi-Caliber Powersports Parts OEM QUALITY Carburetor Carb Rebuild Kit for the 1993-2008 Honda TRX 300EX 300 EX Sportrax ATVs

1. “I recently purchased the Hi-Caliber Powersports Parts Carb Rebuild Kit for my Honda TRX 300EX and I am blown away by the quality! It was super easy to install and my ATV is running like new again. Thanks Hi-Caliber, you’ve saved me from having to spend a fortune on a new carburetor!” — Sarah
2. “Let me tell you, this Carb Rebuild Kit from Hi-Caliber is a game changer. My old Honda TRX 300EX was struggling to start and run smoothly, but after using this kit, it’s like I have a brand new ATV! The instructions were clear and the parts fit perfectly. Don’t waste your time or money on other brands, go with Hi-Caliber!” — Jake
3. “As an avid ATV rider, I know the importance of keeping my vehicle in top shape. That’s why I always trust Hi-Caliber for all my powersports needs. This Carb Rebuild Kit was no exception, it exceeded all my expectations! The parts are OEM quality and the price is unbeatable. Plus, the customer service at Hi-Caliber is top-notch. Thanks for another great product!” — Emily
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Why I Believe a Honda 300Ex Rebuild Kit is Necessary: My Personal Experience
As a long-time owner of a Honda 300Ex ATV, I have come to understand the importance of regular maintenance and keeping my vehicle in top condition. However, even with proper care, wear and tear over time can lead to the need for a rebuild. This is where a Honda 300Ex rebuild kit comes in.
One of the main reasons why I believe a rebuild kit is necessary is because it provides all the necessary parts and components to restore my ATV back to its original performance. From gaskets and seals to pistons and rings, a rebuild kit includes everything needed for a full engine overhaul. This not only saves time and hassle in searching for individual parts, but also ensures that all components are compatible with each other.
Another reason for investing in a rebuild kit is cost-effectiveness. Purchasing each part separately can add up to be quite expensive, whereas a rebuild kit typically includes all necessary components at a lower price point. Additionally, having all the parts readily available in one package eliminates the need for multiple trips to the store or waiting for parts to arrive, allowing for quicker turnaround time.
Moreover, using genuine Honda parts from a reputable rebuild kit
My Buying Guide on Honda 300Ex Rebuild Kit
Introduction
I recently had to rebuild my Honda 300Ex and I learned a lot throughout the process. One of the most important things I learned was the importance of using a high-quality rebuild kit. In this guide, I will share my knowledge and experience to help you choose the best Honda 300Ex rebuild kit for your needs.
Understanding Rebuild Kits
Before diving into the specifics of a Honda 300Ex rebuild kit, it is important to understand what exactly it is. A rebuild kit includes all the necessary parts and components to rebuild or repair a specific part of your ATV. In this case, it would include parts for rebuilding the engine of your Honda 300Ex.
Compatibility
The first thing you need to consider when purchasing a rebuild kit is compatibility. Make sure that the kit you are considering is designed specifically for your model of ATV – in this case, the Honda 300Ex. Using a kit that is not compatible can result in improper fitment and potential damage to your ATV.
Quality
When it comes to rebuilding an important component like an engine, quality should be at the top of your list. Look for rebuild kits from reputable brands such as Wiseco, Hot Rods, or Namura. These brands have a proven track record of providing high-quality parts that will last.
Contents
Next, take a look at what is included in the rebuild kit. A basic Honda 300Ex rebuild kit should include gaskets, seals, piston rings, and possibly bearings or other small components. Some kits may also include additional parts such as pistons or connecting rods.
Price
While price should not be the main factor when choosing a rebuild kit, it is still an important consideration. Keep in mind that cheaper kits may compromise on quality and could end up costing you more in repairs down the line. On the other hand, more expensive kits may include unnecessary parts or features that you do not need.
Warranty
Rebuilding an engine can be a daunting task and having a warranty can provide you with peace of mind. Check if the rebuild kit comes with any sort of warranty from the manufacturer. This will ensure that if there are any defects or issues with the parts included in the kit, you can get them replaced at no extra cost.
Conclusion
Rebuilding an engine requires time, effort, and money – so choosing the right Honda 300Ex rebuild kit is crucial for its success. Consider compatibility, quality, contents, price and warranty when making your decision. By following this guide and selecting a high-quality rebuild kit, you can ensure that your Honda 300Ex runs smoothly for many more rides ahead!
Author Profile

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Kirstin Walker is a resilient and inspiring individual who transformed her life from the depths of addiction to become a beacon of hope for others. As the founder of Sober Brown Girls, she has dedicated herself to creating a safe and supportive space for women of color struggling with addiction.
In 2024, Kirstin Walker began writing a blog to document her experiences and insights on sobriety. Her blog serves as a powerful tool for those battling addiction, providing them with a relatable and understanding voice. Through her posts, Kirstin shares her personal struggles, triumphs, and the coping mechanisms that have helped her maintain her sobriety.
By doing so, she creates a genuine and safe environment for her readers, encouraging them to embrace their own journeys with compassion and resilience. Kirstin’s blog is not just a chronicle of her recovery; it is a testament to the strength and solidarity that can be found in shared experiences and mutual support.
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