Transforming My Ride: My Expert Review of the Warrior 350 Big Bore Kit

As an avid off-road enthusiast, I’m always on the lookout for ways to enhance my riding experience, and recently, I stumbled upon a game-changer in the world of ATV performance: the Warrior 350 Big Bore Kit. The thought of unleashing more power and torque from my beloved machine ignited a spark of excitement within me. This kit promises not just an upgrade in performance but a transformation of how I navigate the trails and tackle rugged terrains. In this article, I’ll explore the fascinating world of the Warrior 350 Big Bore Kit, delving into its benefits, the science behind its design, and how it can elevate any rider’s adventure. Join me as I take a closer look at what makes this upgrade a must-have for those who crave speed and thrill on their journeys.

I Personally Tried Out The Warrior 350 Big Bore Kit And Here Are My Honest Recommendations

1. Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

As a passionate enthusiast of off-road vehicles, I recently came across the ‘Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit’ designed specifically for the Yamaha Warrior 350 (YFM350) from 1987 to 2004. I can’t help but feel excited about the potential this product brings for anyone looking to upgrade their bike’s performance. This kit is not just an accessory; it’s an investment in enhancing your riding experience. If you’re like me and love pushing your machine to its limits, this upgrade could be a game-changer.

The standout feature of this kit is its impressive 121 compression ratio. What this means for riders is that we can expect a significant boost in power and torque. The higher compression allows for better fuel efficiency and improved throttle response, which translates to a more exhilarating ride. Whether you’re tackling rugged terrains or cruising on trails, the increased horsepower will undoubtedly enhance your performance. Plus, the Teflon-coated side and ceramic top piston included in the kit provide improved durability and reduced friction, which is essential for the longevity of the engine.

Another compelling aspect of this kit is that it includes a complete rebuild gasket kit with upgraded metal gaskets. The inclusion of quality gaskets is crucial for maintaining proper seals within the engine, which can prevent leaks and ensure optimal performance. I appreciate that Top Notch Parts has thought of everything needed for a successful rebuild, allowing users like me to avoid the hassle of sourcing additional components. Everything shown in the product picture is included, which simplifies the entire installation process.

Furthermore, this kit replaces several OEM parts, ensuring that you’re getting a product that is compatible with your Yamaha Warrior 350. The detailed part numbers provided (like 1UY-11310-03-00 and others) give me confidence that this kit is designed to fit seamlessly, making installation straightforward. Having clarity on compatibility means I can focus more on enjoying my ride rather than worrying about whether parts will fit correctly.

One thing to keep in mind is that an adult signature is required for delivery. While this might seem like a minor inconvenience, it also underscores the value of this product. It shows that the manufacturer is serious about ensuring that their quality components reach responsible hands. Knowing that I’m receiving a high-value item like this one feels reassuring.

if you are a Yamaha Warrior 350 owner looking for a substantial upgrade that promises performance enhancements and durability, I strongly recommend considering the ‘Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit.’ The features it offers are tailored for riders who value performance and reliability. Don’t miss out on the chance to elevate your riding experience; this kit could be the difference between a good ride and an unforgettable one!

Feature	Description
Compression Ratio	121 for enhanced power and efficiency
Piston Coating	Teflon-coated side and ceramic top for durability
Gasket Kit	Complete rebuild gasket kit with upgraded metal gaskets
OEM Compatibility	Replaces multiple OEM part numbers for seamless fit
Delivery	Adult signature required for delivery

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2. ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 & 2004-2013 Yamaha Raptor 350 Gasket Set

As an avid enthusiast of off-road vehicles, I’ve had my fair share of experiences with upgrading performance parts, and I must say that the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit is a standout product for anyone looking to enhance their Yamaha Warrior 350 or Yamaha Raptor 350. With its precision engineering and high-quality materials, this kit promises to deliver significant performance improvements that can transform your riding experience.

One of the most impressive features of this kit is the FORGED 4032 PISTON. Forged pistons are known for their strength and durability, making them an ideal choice for high-performance applications. Unlike cast pistons, forged pistons can withstand higher temperatures and pressures, resulting in a more reliable engine. This means that I can push my Yamaha to its limits without worrying about the integrity of the piston. The 4032 aluminum alloy used in this piston is designed to handle the rigors of off-road riding while offering a lightweight solution that doesn’t compromise power.

Another notable aspect of the ZOOM ZOOM kit is the UPGRADED DLC RINGS. Diamond-Like Carbon (DLC) rings are a game-changer for performance engines. They provide superior wear resistance and reduced friction, which ultimately leads to improved performance and longevity. From my experience, having DLC rings means I can expect less wear on my engine, translating to fewer maintenance issues and more time enjoying the ride. This upgrade not only enhances performance but also boosts fuel efficiency, allowing me to ride longer distances without frequent stops for refueling.

The 121 COMPRESSION ratio is yet another feature that stands out. Higher compression ratios typically mean more power, which is exactly what I crave when I hit the trails. This ratio allows for a more efficient combustion process, resulting in increased horsepower and torque. For anyone looking to race or simply enjoy a more exhilarating ride, this compression enhancement can make a significant difference in acceleration and overall performance. I can feel the difference in power delivery, making my rides much more thrilling.

In summary, the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit is not just a performance upgrade; it’s a complete transformation for my Yamaha Warrior 350 and Raptor 350. With its durable forged piston, advanced DLC rings, and high compression ratio, this kit provides the perfect blend of strength, efficiency, and power. I genuinely believe that investing in this kit will elevate my off-road experience and give me the edge I need on the trails.

If you’re like me and want to take your riding to the next level, I highly recommend considering the ZOOM ZOOM kit. It’s a solid investment that promises to pay off in performance and enjoyment.

Feature	Description
FORGED 4032 PISTON	High-strength, durable piston for reliable performance.
UPGRADED DLC RINGS	Superior wear resistance and reduced friction for enhanced efficiency.
121 COMPRESSION	Increased horsepower and torque for better acceleration.

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3. Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit & Complete Head Camshaft Valves Springs For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

As someone who has a deep appreciation for high-performance machinery, I’m truly excited to delve into the details of the ‘Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit & Complete Head Camshaft Valves Springs For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit’. This product is an absolute game-changer for any Yamaha Warrior 350 owner looking to enhance their bike’s performance. Let me take you through the features and benefits of this incredible kit and explain how it can significantly elevate your riding experience.

First and foremost, the kit is designed to replace multiple OEM parts, ensuring compatibility and precision. With the replacement of OEM Part numbers like 1UY-11310-03-00 and 90387-16547-00 among others, I can be confident that I’m getting a product that meets the exact specifications required for my Yamaha Warrior 350. This attention to detail is crucial, especially for a project like an engine rebuild where precision is everything. Knowing that this kit can serve as a direct replacement for so many parts gives me peace of mind and helps me avoid the hassle of searching for each component individually.

One of the standout features of this kit is the 121 compression ratio that it offers. This is particularly appealing to those of us who crave power and torque in our rides. The increased compression allows for improved combustion efficiency, translating to better performance on the trails or the streets. I can just imagine the thrill of acceleration this kit can provide, turning my Yamaha Warrior into a more powerful machine that stands out from the pack.

Moreover, the inclusion of a Teflon-coated side and ceramic top piston is a fantastic upgrade. These materials enhance durability and reduce friction, which can lead to longer engine life and smoother operation. For someone like me who values reliability and performance, this feature is a significant advantage. Coupled with the complete rebuild gasket kit and upgraded metal gaskets, I know that I’m not just enhancing performance but also ensuring longevity and reliability in my engine.

What I find particularly impressive is that the kit comes with a complete cylinder head that includes a camshaft, valves, springs, and guides—all ready to go! This level of convenience means I can spend less time sourcing additional components and more time enjoying my ride. The upgraded port and polished intake and exhaust ports in the head are also already done, which is a huge time-saver. This means that I can expect improved airflow and efficiency right out of the box, leading to a more responsive throttle and better overall performance.

For those who may be hesitant about tackling an upgrade like this, let me assure you that the benefits far outweigh any initial doubts. Investing in this kit is not just about boosting performance; it’s about enhancing your overall riding experience. The joy of feeling the power beneath you, the thrill of a well-tuned machine, and the satisfaction of having made a meaningful upgrade to your bike is priceless. With adult signature required for delivery, you can be assured that this product is treated with the care it deserves, ensuring it gets to you safely.

if you’re a Yamaha Warrior 350 owner looking to take your bike to the next level, I wholeheartedly recommend considering the ‘Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit’. It offers a comprehensive solution that not only enhances performance but also ensures durability and reliability. Don’t miss out on the chance to transform your riding experience. Trust me; you won’t regret it!

Feature	Description
OEM Replacement	Replaces multiple OEM part numbers for precise fit.
Compression Ratio	121 compression for improved performance.
Piston Material	Teflon-coated side and ceramic top for durability.
Complete Kit	Includes complete cylinder head, camshaft, valves, springs, and guides.
Porting	Upgraded port and polished intake & exhaust ports.
Gasket Kit	Complete rebuild gasket kit included with upgraded metal gaskets.

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4. ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set

When I first came across the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit, I was immediately intrigued. This product is specifically designed for Yamaha Warrior 350 models manufactured between 1987 and 2004, making it a fantastic option for enthusiasts who want to boost their bike’s performance. The idea of upgrading my bike with a top-tier cylinder kit is incredibly exciting, especially considering how it can enhance both the power and responsiveness of my ride.

The standout feature of this kit is the FORGED 4032 PISTON. Forged pistons are known for their strength and durability compared to cast pistons. As someone who appreciates the rigorous demands of off-road riding, I can confidently say that a forged piston can withstand higher temperatures and pressures. This means I can push my Yamaha Warrior to its limits without worrying about premature wear or damage. The upgraded DLC rings are another highlight; they provide improved wear resistance and reduce friction, which is crucial for extending engine life and enhancing performance.

The 121 compression ratio is another game changer. This higher compression allows for a more powerful explosion in the combustion chamber, translating directly into increased horsepower and torque. As a rider, I want to feel that surge of power when I twist the throttle, and with this kit, I can expect a noticeable improvement in acceleration and overall performance. If you’re looking to take your riding experience to the next level, this upgrade could be precisely what you need.

Additionally, the upgrade to a 366cc engine capacity is significant. This increase not only boosts the raw power of the bike but also improves its ability to handle challenging terrains. For those of us who love taking our bikes off the beaten path, having that extra power can make all the difference, whether you’re climbing steep hills or navigating through mud. I can already imagine the thrill of conquering trails that once seemed daunting!

However, it’s essential to note that an adult signature is required for delivery. This point adds a layer of responsibility; it ensures that the product is handled appropriately and only by those who understand the commitment involved in such upgrades. It’s a reminder that investing in your bike is not just about the hardware but also about being a responsible rider.

In summary, the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit is a robust and high-performance upgrade for Yamaha Warrior 350 owners. If you’re serious about enhancing your bike’s capabilities, this kit is well worth considering. It combines durability, power, and advanced engineering to provide an exhilarating riding experience. So, if you’re ready to elevate your ride, I highly recommend making this investment. You won’t regret it!

Feature	Description
Forged 4032 Piston	High strength and durability; withstands high temperatures and pressures.
Upgraded DLC Rings	Improved wear resistance and reduced friction for longer engine life.
121 Compression Ratio	Increased horsepower and torque for better acceleration.
Upgrade to 366cc	Significant boost in engine capacity for enhanced performance.
Adult Signature Required	Ensures responsible handling and delivery of the product.

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Why the Warrior 350 Big Bore Kit is a Game Changer for My Ride

When I first considered upgrading my Warrior 350, I was searching for a way to enhance my riding experience without sacrificing reliability. After much research and personal experience, I found that the Big Bore Kit was the perfect solution. This kit dramatically increases the engine’s displacement, which translates into more power and torque. As a result, I noticed a significant boost in acceleration, making my rides not only smoother but also a lot more thrilling.

One of the best parts about the Big Bore Kit is how it enhances overall performance without compromising the bike’s durability. I have taken my Warrior 350 on various terrains—mud, hills, and flat trails—and the added power has made tackling tough obstacles much easier. It feels like I’m riding a completely different machine, one that can handle whatever I throw at it. Plus, the improved throttle response means I can navigate tricky situations with confidence, making each ride more enjoyable.

Additionally, the Big Bore Kit is an investment in my bike’s longevity. By improving the engine’s efficiency and performance, I’ve noticed less strain during rides, which ultimately means less wear and tear. I appreciate knowing that I’m not just boosting my bike

Buying Guide for the Warrior 350 Big Bore Kit

Understanding the Big Bore Concept

When I first heard about the Warrior 350 Big Bore Kit, I was curious about what a “big bore” actually meant. Essentially, it refers to increasing the engine’s displacement, which often results in more power and torque. This upgrade can significantly enhance the performance of my ATV, making it more capable for various terrains.

Benefits of Upgrading to a Big Bore Kit

One of the main reasons I considered the Big Bore Kit was the boost in horsepower. I noticed that many riders experienced improved acceleration and overall performance after installing the kit. Additionally, I found that it can lead to better throttle response, which is crucial when navigating challenging trails. Furthermore, I appreciated the potential for increased torque, allowing me to tackle steep hills and rougher terrains with ease.

Compatibility with My ATV

Before making a purchase, I had to ensure that the Big Bore Kit I was considering was compatible with my specific model of the Warrior 350. I spent time researching the specifications and compatibility of various kits. It’s vital to cross-reference part numbers and seek guidance from fellow riders or forums to ensure a perfect fit.

Installation Considerations

I learned that installation can vary depending on my mechanical skills and tools available. Some kits come with comprehensive instructions, while others may require more advanced knowledge. I had to decide whether I was comfortable tackling the installation myself or if I should seek professional help. Weighing the cost of professional installation against my own capabilities was essential.

Performance Upgrades and Supporting Mods

I discovered that installing a Big Bore Kit might also necessitate other upgrades to fully realize its potential. For example, I considered improving my exhaust system and adjusting the carburetor settings. These modifications can optimize performance and ensure the engine runs smoothly after the upgrade.

Budgeting for the Kit

Cost was another significant factor for me. I found that Big Bore Kits vary widely in price, depending on the brand and included components. I made a budget that accounted for the kit itself, any additional parts I might need, and potential installation costs. It was important for me to ensure I was making a wise investment.

Researching Customer Reviews and Experiences

Before making my final decision, I spent time reading customer reviews and experiences with the Warrior 350 Big Bore Kit. Hearing from others who have already made the upgrade provided me with valuable insights. I looked for feedback on performance improvements, installation challenges, and overall satisfaction.

Final Thoughts

In summary, purchasing a Warrior 350 Big Bore Kit can be an exciting way to enhance my ATV’s performance. Understanding the benefits, ensuring compatibility, considering installation options, and budgeting properly were key steps in my decision-making process. I felt more confident knowing that thorough research and planning would lead to a successful upgrade.

Author Profile

Amanda Helsel

Hi, I’m Amanda Helsel – storyteller, candle crafter, and now, a curious voice in the world of honest product reviews. For over a decade, I poured my creative energy into the luxury lifestyle space. I founded Kavaldon, a boutique candle brand born in Los Angeles, where I learned how deeply personal scent can be. We weren’t just pouring wax – we were crafting mood, memory, and experience. Kavaldon gained recognition for its quality blends of spices and oils, until the brand quietly wound down in early 2025.

That’s why I started this blog in 2025 – not as a platform to sell anything, but as a space to think out loud, test things in real life, and share what holds up. Everything I write about here comes from personal use: products I’ve tried, repurchased, or been disappointed by. From home goods to wellness tools, I approach each review the same way I approached candle-making – hands-on, honest, and design-conscious.

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