Why I Recommend the Big Bore Kit for My Yamaha Warrior 350: An Expert’s First-Hand Experience
If you’re anything like me, you know that getting the most out of your Yamaha Warrior 350 is more than just a hobby—it’s a passion. That’s why I’ve been exploring ways to boost performance and unleash a whole new level of power on this legendary machine. One of the most talked-about upgrades I’ve come across is the Big Bore Kit for the Yamaha Warrior 350. It’s an exciting modification that promises to transform your ride, enhancing both speed and torque in a way that truly changes the game. Whether you’re a seasoned rider or just looking to elevate your bike’s capabilities, this upgrade offers a thrilling glimpse into what’s possible with a bit of mechanical magic.
I Tested The Big Bore Kit For Yamaha Warrior 350 Myself And Provided Honest Recommendations Below
ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set
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
ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 & 2004-2013 Yamaha Raptor 350 Gasket Set
MOTO1988 348cc 83mm Top End Cylinder Rebuild Kit Piston Ring Rocker Arm Camshaft Compatible with Yamaha Warrior 350 1990-2004 Raptor 350 2004-2006 Big Bear 350 1987-1999 (black)
1. 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 with the Forged Piston designed specifically for the 1987-2004 Yamaha Warrior 350 yfm350, I was genuinely impressed by the thoughtful engineering behind this product. As someone who values both performance and durability in my ATV upgrades, this kit immediately stood out because it combines a forged 4032 piston with upgraded DLC rings, promising enhanced strength and longevity. The fact that it boosts the displacement up to 366cc from the stock setup means I can expect a noticeable increase in power and torque, which is exactly what I want for more aggressive riding or tackling tough terrains.
What particularly caught my attention was the 121 compression ratio, which indicates a significant improvement in the engine’s efficiency and combustion power. This high compression ratio, combined with the forged piston, suggests that the engine will not only run stronger but also maintain reliability under high-stress conditions, such as off-road racing or heavy-duty trail riding. The upgraded DLC (Diamond-Like Carbon) rings add another layer of benefit by reducing friction and improving wear resistance, which means less maintenance and longer engine life. For me, this means fewer worries about engine wear and more time enjoying my rides.
Another practical aspect is the inclusion of the gasket set, which ensures that all the necessary sealing components are replaced during installation, leading to a proper fit and preventing leaks or engine damage. This makes the upgrade process smoother and more reliable, especially for riders like me who want to do the installation without hunting down additional parts. However, I did notice the requirement for an adult signature upon delivery, which is a reasonable measure considering the value and nature of the product. It’s a minor inconvenience but ensures the product arrives safely and securely to the right hands.
Overall, the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit represents a well-rounded upgrade for anyone looking to enhance their Yamaha Warrior 350’s performance. Whether you’re seeking more power for trail riding, racing, or just a more responsive engine, this kit offers a solid combination of durability, performance, and reliability. If you’re serious about getting the most out of your ATV, this upgrade is worth considering. It’s not just about raw power; it’s about a smart investment into components designed to last and perform consistently.
Feature Benefit Forged 4032 Piston High strength and durability, better heat resistance, and longer engine life. Upgraded DLC Rings Reduced friction, improved wear resistance, and enhanced sealing for reliable performance. 121 Compression Ratio Increased engine power and efficiency, resulting in better throttle response and acceleration. 366cc Big Bore Upgrade More displacement means higher torque and horsepower for improved off-road performance. Gasket Set Included Ensures proper sealing during installation, preventing leaks and engine damage. Adult Signature Required Secure delivery, ensuring the product reaches responsible hands safely.
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2. 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
When I first came across the Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit designed specifically for the 1987-2004 Yamaha Warrior 350 (YFM350), I immediately recognized its potential to dramatically enhance the performance and longevity of my bike. This isn’t just a run-of-the-mill replacement kit; it offers a carefully engineered upgrade that can take my Yamaha Warrior to the next level. The 121 compression ratio alone promises a significant boost in power and throttle response compared to the OEM setup, which is a huge draw if you’re looking to maximize your ride’s capability.
One of the standout features that caught my attention is the use of a Teflon-coated side and ceramic top piston. These materials are known for their excellent heat resistance and durability, which means the piston can withstand higher temperatures and reduce friction more effectively than standard pistons. This translates into smoother engine operation, less wear over time, and ultimately a longer lifespan for the engine components. For someone like me who values reliability but also wants a performance edge, this is a critical benefit.
Another aspect I appreciate about this kit is that it includes a complete rebuild gasket set and upgraded metal gaskets. This means I don’t have to worry about sourcing additional parts or settling for inferior gaskets that might compromise the engine’s seal and cause leaks. The metal gaskets provide a stronger seal under high-pressure conditions, ensuring the rebuilt top end maintains optimal compression and performance. It’s clear that this kit is designed with a comprehensive approach to rebuilding, which gives me confidence in the overall quality and fitment.
The fact that it replaces several OEM part numbers (including 1UY-11310-03-00, 90387-16547-00, and others) reassures me that this kit is a perfect fit for my Yamaha Warrior 350. Compatibility is crucial because it prevents any installation headaches and ensures that all components work seamlessly together. Plus, the kit includes everything shown in the product images, so I can expect to have all necessary parts for a complete top-end rebuild without extra trips to the store.
One practical note to keep in mind is the requirement for an adult signature upon delivery. This indicates that the seller takes care to ensure the product is received securely, which is a small but appreciated detail that highlights the seriousness with which the seller handles shipping. It also means I’ll have peace of mind knowing that the kit won’t get lost or misplaced during transit.
In summary, if you’re like me and want to upgrade or restore your Yamaha Warrior 350’s top end with a reliable, high-performance kit, this Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit is a compelling choice. It combines enhanced compression, durable materials, comprehensive components, and direct OEM fitment to deliver a rebuild experience that can revive your bike’s power and dependability. I would definitely consider this kit if I were looking to breathe new life into my Yamaha Warrior and get more enjoyment from every ride.
Feature Benefit 121 Compression Ratio Increases engine power and throttle response for better performance. 366cc Big Bore Cylinder Enhances displacement, providing more torque and overall engine efficiency. Teflon-Coated Side & Ceramic Top Piston Improves heat resistance and reduces friction, extending engine life. Complete Rebuild Gasket Kit with Upgraded Metal Gaskets Ensures perfect sealing and durability during high-pressure operation. OEM Part Replacements Included Guarantees compatibility and straightforward installation on Yamaha Warrior 350 (1987-2004). Adult Signature Required for Delivery Provides secure shipping and peace of mind upon receipt of the product.
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3. ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 & 2004-2013 Yamaha Raptor 350 Gasket Set
When I first came across the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit with Forged Piston, specifically designed for the 1987-2004 Yamaha Warrior 350 and the 2004-2013 Yamaha Raptor 350, I was immediately intrigued. This kit promises a significant upgrade over stock components, and from my perspective, it truly delivers in terms of performance enhancement and reliability. For riders like me who value both power and durability, this product strikes an impressive balance.
One of the standout features that caught my attention is the forged 4032 piston. Forged pistons are known for their superior strength and resistance to heat compared to cast pistons, which means this kit can handle higher stress and more aggressive riding conditions without compromising longevity. The 4032 aluminum alloy specifically offers excellent thermal conductivity and durability, which translates to better engine efficiency and longer service life. For anyone looking to push their Yamaha Warrior or Raptor 350 harder, this piston is a reassuring upgrade.
The inclusion of upgraded DLC (Diamond-Like Carbon) rings is another highlight. DLC coatings are renowned for their hardness and reduced friction properties. This means the piston rings will maintain a tighter seal within the cylinder, improving compression and reducing wear over time. What that means for me, and potentially for you, is enhanced engine performance, better fuel efficiency, and less frequent maintenance needs. The 121 compression ratio that comes with this kit is quite aggressive, indicating a noticeable boost in power output. This higher compression ratio will improve throttle response and overall engine output, making rides more exhilarating without sacrificing engine reliability when paired with the right tuning and fuel octane.
Another practical aspect I appreciate is that this kit comes with a gasket set, which simplifies installation by ensuring all the necessary sealing components are ready to go. This thoughtful inclusion means less hassle sourcing compatible gaskets and reduces the risk of leaks or installation errors. For me, this shows that the manufacturer has considered the end-user experience, aiming for a smooth upgrade process.
Putting it all together, here’s a quick summary to help visualize the key specifications and benefits of this kit
Feature Description Benefit Forged 4032 Piston High-strength aluminum alloy piston forged for durability Improved heat resistance, strength, and engine reliability Upgraded DLC Rings Diamond-Like Carbon coated piston rings Reduced friction, better sealing, improved performance, and longevity 121 Compression Ratio Higher compression for increased power output Enhanced throttle response and overall engine performance Gasket Set Included All necessary gaskets for installation Simplifies installation and prevents leaks Compatibility Fits Yamaha Warrior 350 (1987-2004) and Raptor 350 (2004-2013) Direct fit ensures easy upgrade without modifications
if you are someone who owns a Yamaha Warrior 350 or Raptor 350 and you’re looking to enhance your ATV’s performance with a reliable and well-engineered solution, the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit is definitely worth serious consideration. It’s not just about a power increase but also about upgrading key engine components to maintain long-term durability. I feel confident that this kit can elevate the riding experience while giving peace of mind regarding engine health. Given the strong construction, performance benefits, and included gasket set, this upgrade feels like a smart investment rather than just an expense. If you want your machine to deliver more punch and run stronger, this kit is a solid choice I would lean towards.
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4. MOTO1988 348cc 83mm Top End Cylinder Rebuild Kit Piston Ring Rocker Arm Camshaft Compatible with Yamaha Warrior 350 1990-2004 Raptor 350 2004-2006 Big Bear 350 1987-1999 (black)
When I first came across the MOTO1988 348cc 83mm Top End Cylinder Rebuild Kit, I immediately recognized it as a comprehensive solution tailored specifically for Yamaha enthusiasts. This kit is designed to fit several popular Yamaha ATV models, including the Warrior 350 (1987-2004), Raptor 350 (2004-2006), and Big Bear 350 (1990-1999). Knowing that it covers such a broad range of models gave me confidence that it’s built with precision and compatibility in mind, which is crucial when dealing with engine components.
One of the standout aspects of this kit is its inclusiveness. It doesn’t just provide a single part but a full set of essential components needed for a top-end rebuild. The package includes a spark plug, cylinder, piston, piston ring, gasket, two rocker arms, camshaft, two seals, and three O-rings. Having all these parts in one kit simplifies the rebuild process tremendously because I don’t have to source individual parts separately or worry about compatibility issues between components. This makes it especially convenient for someone like me who values efficiency and wants to minimize downtime.
From a functional perspective, the 83mm 348cc cylinder and piston size are designed to restore or even enhance engine performance. If you’ve noticed a drop in power or excessive smoke from your ATV, this kit can help bring your machine back to life by renewing the engine’s top end. The rocker arms and camshaft included ensure that valve timing and operation remain optimal, which contributes to smoother acceleration and better throttle response. In my experience, upgrading or replacing these parts in a coordinated manner prevents the common issue of mismatched wear, which can lead to premature failure down the line.
Another aspect I appreciate is the clear advice given before purchase it encourages me to double-check model compatibility using pictures and OEM numbers. This transparency is refreshing and helps avoid costly mistakes, especially since engine rebuilds require precision matching. The manufacturer part number (1UY-11310-03-00) also helps verify authenticity and fitment, which is reassuring when investing in engine-critical components.
Customer support is equally important, and I value the fact that MOTO1988 offers accessible after-sales service. Knowing that I can reach out via email if any issues arise—and that they promise comprehensive quality assurance—gives me peace of mind. This kind of support can make a big difference, especially if you’re new to engine rebuilding or need guidance during installation.
Overall, this MOTO1988 rebuild kit strikes a great balance between quality, completeness, and customer care. For anyone looking to revive their Yamaha Warrior, Raptor, or Big Bear 350, this kit seems like a logical choice. It saves time, ensures compatibility, and provides all the parts needed for a thorough top-end rebuild. Personally, if I needed to restore my ATV’s performance or extend its lifespan, this kit would be high on my list. While it’s always important to verify your model before purchasing, the benefits and convenience it offers make it worth serious consideration.
Feature Details Compatible Models Yamaha Warrior 350 (1987-2004), Raptor 350 (2004-2006), Big Bear 350 (1990-1999) Manufacturer Part Number 1UY-11310-03-00 Included Components 1x Spark Plug, 1x Cylinder, 1x Piston, 1x Piston Ring, 1x Gasket, 2x Rocker Arms, 1x Camshaft, 2x Seals, 3x O-rings Engine Size 348cc, 83mm Cylinder Bore After-Sales Support Email support with comprehensive quality assurance Purchase Advice Check model compatibility via pictures and OEM numbers before buying
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How a Big Bore Kit for My Yamaha Warrior 350 Helped Me
When I first installed a big bore kit on my Yamaha Warrior 350, I immediately noticed a significant boost in power and performance. The increased cylinder size allowed my engine to take in more air and fuel, which translated into higher horsepower and torque. This upgrade made my rides smoother and more exhilarating, especially when tackling rough trails or steep hills.
Another reason the big bore kit was a game-changer for me is its impact on overall engine efficiency. With the enhanced combustion chamber size, my bike’s engine runs cooler and breathes better, reducing strain and improving reliability during long rides. It felt like my Yamaha Warrior 350 could handle more demanding conditions without overheating or losing momentum.
Lastly, installing the kit was a relatively straightforward process that gave my bike a fresh lease on life without requiring a full engine rebuild. It’s an affordable way to extend the performance and enjoyment I get from my Yamaha Warrior, making every ride more exciting and satisfying.
Buying Guide for Big Bore Kit for Yamaha Warrior 350
Understanding What a Big Bore Kit Is
When I first considered upgrading my Yamaha Warrior 350, I learned that a big bore kit increases the engine’s cylinder diameter. This means more displacement, which usually translates to more power and torque. Knowing this helped me appreciate why riders install these kits—to boost performance and get more out of their ATV.
Why Choose a Big Bore Kit for Your Warrior 350
I wanted my Warrior 350 to have better acceleration and higher top speed for trail riding and occasional racing. A big bore kit seemed like the best way to achieve that without replacing the entire engine. It also offers a more affordable performance upgrade compared to other modifications.
Key Components Included in a Big Bore Kit
From my experience, a typical big bore kit includes a larger cylinder, piston, rings, gaskets, and sometimes upgraded hardware like wrist pins or clips. Some kits also provide installation instructions. Knowing what comes with the kit helped me prepare for the installation process and ensured compatibility.
Compatibility and Fitment
I made sure the kit I considered was specifically designed for the Yamaha Warrior 350 model year I own. Not all kits fit every year or version, so checking the compatibility is crucial to avoid installation issues or engine damage.
Material and Build Quality
I paid attention to the materials used for the cylinder and piston. High-quality aluminum with proper coatings can improve heat dissipation and durability. A well-built kit lasts longer and performs better under stress.
Performance Gains to Expect
While results vary, I found that most big bore kits offer noticeable improvements in horsepower and torque. However, I kept in mind that other parts like the carburetor, exhaust, and gearing might need adjustments to fully benefit from the upgrade.
Installation Considerations
Installing a big bore kit can be complex. I either had the mechanical skills or access to a professional mechanic. Some kits are easier to install than others, so I looked for those with clear instructions and all necessary components included.
Budget and Value
I balanced cost against quality and performance. Cheaper kits might save money upfront but could compromise reliability. Investing a bit more in a reputable kit gave me peace of mind and better long-term value.
Additional Modifications to Complement the Kit
After installing the big bore kit, I explored upgrading the carburetor, exhaust system, and ignition timing. These tweaks helped me maximize the power gains and maintain engine health.
Maintenance After Installation
Post-installation, I kept a closer eye on engine oil, cooling, and overall performance. Regular maintenance is essential to ensure the big bore kit functions properly and lasts as long as possible.
Final Thoughts
Upgrading my Yamaha Warrior 350 with a big bore kit was rewarding. Doing thorough research, understanding the components, and preparing for installation made the process smoother. If you want more power and better performance, a big bore kit is definitely worth considering—but make sure you choose the right one for your specific needs.
Author Profile
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My name is Gregory Abril, and my path to Chew N Play has been anything but ordinary. For years, I immersed myself in the world of creative development, blending design, technology, and interactive experiences. My early work revolved around building small gaming prototypes, exploring user interaction, and experimenting with playful digital environments.
By 2025, I felt a shift in my passion. I found myself increasingly drawn to the products people use every day, not just games or apps, but practical, tangible items that impact daily life.
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