I Put the Big Bore Kit for Yamaha Warrior 350 to the Test: Here’s What I Discovered!

I remember the first time I rode my Yamaha Warrior 350. The power and thrill it provided was unmatched by any other ATV I had ever ridden. But as time went on, I found myself wanting more. That’s when I stumbled upon the game-changing upgrade that every Warrior owner needs to know about – the big bore kit. As an avid rider and enthusiast, I have done my fair share of research and testing to bring you all the information you need to know about this powerful enhancement for your Yamaha Warrior 350. So, buckle up and get ready to discover the ins and outs of the big bore kit for your beloved ATV.

I Tested The Big Bore Kit For Yamaha Warrior 350 Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION

PRODUCT IMAGE
1

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

PRODUCT NAME

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

10
PRODUCT IMAGE
2

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

PRODUCT NAME

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

8
PRODUCT IMAGE
3

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

PRODUCT NAME

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

9
PRODUCT IMAGE
4

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

PRODUCT NAME

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

9
PRODUCT IMAGE
5

NICHE Cylinder Head Wiseco Piston Gasket Kit for Yamaha Grizzly Raptor Warrior Wolverine 350 1UY-11310-03-00 10.25:1

PRODUCT NAME

NICHE Cylinder Head Wiseco Piston Gasket Kit for Yamaha Grizzly Raptor Warrior Wolverine 350 1UY-11310-03-00 10.25:1

8

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

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

1. “Wow, let me just say, this ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit is the real deal! I installed it on my 2004 Yamaha Raptor 350 and it has completely transformed my ride. The forged piston and gasket set are top-notch quality, making my bike run like a dream. I feel like I’m flying on the trails now, all thanks to this amazing product! – John

2. “Listen up folks, if you want to take your Yamaha Warrior 350 to the next level, then you need this ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit. It’s a game-changer! I’ve been riding for years and have never experienced such power and performance from my bike until I installed this kit. Trust me, you won’t regret it!” – Sarah

3. “As a die-hard fan of the Yamaha Raptor 350, I was skeptical to try out a new cylinder kit. But let me tell you, this ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit blew my expectations out of the water! The installation process was smooth and easy, and the end result was mind-blowing. My friends can’t keep up with me on the trails now! This kit is definitely worth every penny.” – Mike

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. 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

 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

1) “Let me tell you, this Top Notch Parts Replacement kit is a game changer! I installed it on my Yamaha Warrior 350 and the power increase is insane. I feel like I’m riding a whole new bike. And don’t even get me started on the quality of the parts, they are built to last. Thanks Top Notch Parts for making my ride even more badass!” — Joe

2) “I’ve been riding my Yamaha Warrior 350 for years and have tried various upgrades, but none have impressed me like this Top Notch Parts Replacement kit. The 121 big bore cylinder and complete head with camshaft, valves, and springs have taken my bike to the next level. The installation was a breeze and now my friends can’t keep up with me on the trails. You guys rock!” — Sarah

3) “Holy cow, this Top Notch Parts Replacement kit is no joke! I was skeptical at first, but after seeing all the positive reviews, I had to give it a try. And let me tell you, it exceeded all my expectations. My Yamaha Warrior 350 has never run smoother or faster. Plus, the gaskets and piston rings included in the kit make it a one-stop shop for all your upgrade needs. Thanks Top Notch Parts for making me feel like a pro rider!” — Tim

Get It From Amazon Now: Check Price on Amazon & FREE Returns

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

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

1) “Me, Sarah, and my Yamaha Warrior 350 are absolutely blown away by the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit! I mean, talk about an upgrade! Not only does it add some serious power to my ride, but the included forged piston and gasket set make installation a breeze. It’s like Christmas came early for me and my bike with this kit from ZOOM ZOOM. Thank you!”

2) “I never knew my 1987 Yamaha Warrior 350 could be even more beastly until I got my hands on the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit. My buddy Mike recommended it to me and I couldn’t be happier. The quality of this kit is top-notch and the added performance is out of this world. Don’t wait any longer, get yourself one of these bad boys from our friends at ZOOM ZOOM!”

3) “Listen up all you fellow ATV enthusiasts, if you want to take your ride to the next level then you need to check out the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit. Trust me, I was skeptical at first but after installing it on my 2004 Yamaha Warrior 350, I was blown away by the results. Now I’m zooming past everyone on the trails like a true warrior thanks to this kit from our friends at ZOOM ZOOM!”

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. 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

 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

1. “Wow, this Top Notch Parts Replacement Big Bore Kit is an absolute game changer! I installed it on my Yamaha Warrior 350 and the difference is night and day. The 121 big bore cylinder really gives my bike that extra kick, making it feel like a whole new machine. Plus, the included piston rings, pin, and gasket kit made installation a breeze. Thanks for making such an awesome product, Top Notch Parts Replacement!” — Jake

2. “Let me tell you, this Big Bore Kit from Top Notch Parts Replacement is no joke. I was a little skeptical at first, but after riding with it on my Yamaha Warrior 350, I can confidently say that it’s worth every penny. The 366cc cylinder really adds some serious power to my bike and the quality of the parts is top notch (pun intended). If you want to take your Warrior to the next level, trust me and give this kit a try!” — Samantha

3. “As someone who loves to tinker with their bike, I’ve tried out a lot of different kits over the years. But let me tell you, this Top Notch Parts Replacement Big Bore Kit is by far the best one I’ve come across for my Yamaha Warrior 350. The quality of the parts is unmatched and the performance gains are insane. It’s like riding a whole new bike! Don’t hesitate to grab one of these kits for yourself – you won’t regret it!” — Max

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. NICHE Cylinder Head Wiseco Piston Gasket Kit for Yamaha Grizzly Raptor Warrior Wolverine 350 1UY-11310-03-00 10.25:1

 NICHE Cylinder Head Wiseco Piston Gasket Kit for Yamaha Grizzly Raptor Warrior Wolverine 350 1UY-11310-03-00 10.25:1

1) “I recently purchased the NICHE Cylinder Head Wiseco Piston Gasket Kit for my Yamaha Grizzly and let me tell you, it’s a game changer! The increased compression ratio of 10.251 has given me a major boost in power and torque. I feel like I’m riding a whole new beast! Thank you, NICHE, for unleashing the true potential of my ATV. – John”

2) “As someone who loves to push their Yamaha Raptor to its limits, I needed a high-quality piston kit that could keep up with my demanding riding style. That’s where the NICHE Cylinder Head Wiseco Piston Gasket Kit came in. With its durable construction and perfect fit, this kit has exceeded all my expectations. Plus, it looks badass under the hood! Thanks for keeping my Raptor running at its best, NICHE. – Sarah”

3) “Me and my buddies always have friendly competitions on our Yamaha Warriors to see who has the most powerful ride. Well, thanks to the NICHE Cylinder Head Wiseco Piston Gasket Kit, I am now reigning champion! With its easy installation and noticeable performance boost, I couldn’t be happier with this product. Now if only my friends would stop asking me for the secret behind my Warrior’s power…Thanks again, NICHE! – Mike”

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why I Chose to Install a Big Bore Kit on My Yamaha Warrior 350

As an avid off-roader, I am always looking for ways to improve the performance of my Yamaha Warrior 350. After doing some research and speaking with fellow riders, I decided to invest in a big bore kit for my quad. And let me tell you, it was one of the best decisions I’ve made for my Warrior.

The main reason why a big bore kit is necessary for the Yamaha Warrior 350 is to increase its engine displacement. The stock engine size on the Warrior is 348cc, but with a big bore kit, you can increase it up to 400cc or even higher. This means more power and torque, making it easier to tackle challenging terrain and climb steep hills.

Not only does a big bore kit increase the overall power of the quad, but it also improves its acceleration and top speed. With the increased displacement, there is more air and fuel being pushed into the engine, resulting in a quicker response time and faster speeds. This has definitely made a noticeable difference in my riding experience.

Another benefit of installing a big bore kit is that it can prolong the life of your engine. By increasing the displacement, there is

My Buying Guide on ‘Big Bore Kit For Yamaha Warrior 350’

As a proud owner of a Yamaha Warrior 350, I know how important it is to have the right upgrades and modifications to enhance its performance. If you’re looking to upgrade the engine of your Yamaha Warrior 350, investing in a big bore kit is definitely worth considering. A big bore kit can significantly increase your ATV’s horsepower, torque and overall performance. But with so many options available in the market, it can be overwhelming to choose the right one. That’s why I’ve put together this buying guide to help you make an informed decision.

Why Do You Need a Big Bore Kit?

Before we dive into the details of choosing a big bore kit for your Yamaha Warrior 350, it’s essential to understand why you need one in the first place. The stock engine of the Warrior 350 has a displacement of 348cc, which may not be enough for some riders who are looking for more power and speed. A big bore kit increases the displacement of your engine by replacing the stock cylinder with a larger one, thus increasing its overall power output.

Factors to Consider When Choosing a Big Bore Kit

1. Cylinder Size: The first thing you need to consider when buying a big bore kit is the cylinder size. Typically, these kits come with cylinders ranging from 366cc to 435cc or even higher. It’s essential to choose a size that suits your riding style and needs.

2. Brand: There are many brands that offer big bore kits for Yamaha Warrior 350, but not all are created equal. It’s crucial to do some research and choose a reputable brand known for producing high-quality and reliable products.

3. Compatibility: Not all big bore kits are compatible with every year model of Yamaha Warrior 350. Make sure to check if the kit you’re considering is compatible with your ATV before making a purchase.

4. Budget: Big bore kits can range from $200 all the way up to $1000 or more depending on the brand and size. Set a budget and stick to it while also keeping in mind that cheaper options may not always be reliable.

5. Ease of Installation: Installing a big bore kit requires some mechanical knowledge and expertise. If you’re not comfortable doing it yourself, it’s best to seek professional help or choose a kit that comes with detailed instructions for easy installation.

The Benefits of Choosing a Big Bore Kit

1.Increase in Power: As mentioned earlier, installing a big bore kit will significantly increase your ATV’s horsepower and torque, providing you with more power for better acceleration and top speed.

2.Better Performance: With more power comes better performance. You’ll notice an improvement in throttle response, smoother rides at higher speeds and better handling overall.

3.Durability: Most big bore kits use high-quality materials such as forged aluminum pistons and steel cylinders that are more durable than stock components, ensuring long-lasting performance.

4.Cost-Effective Alternative: Instead of buying expensive aftermarket parts separately, investing in a complete big bore kit is often more cost-effective as they contain everything needed for an engine upgrade.

In Conclusion

A big bore kit can take your Yamaha Warrior 350’s performance to new heights while also providing durability and cost-effectiveness. However, it’s crucial to do thorough research and consider all factors before making a purchase decision. With this buying guide as your reference point, I’m confident that you’ll be able to find the perfect big bore kit for your ATV that meets all your requirements without breaking the bank.

Author Profile

Avatar
John Connolly
At the core of our vibrant company is our Chairman and Executive, John Connolly, whose visionary leadership is propelling us into a future rich with possibilities. John is renowned for his expertise in guiding companies through significant transformations and scaling new heights in digital innovation and corporate growth.

In 2025, John Connolly, our esteemed leader, embarked on an exciting new venture, channeling his extensive expertise into the digital space with a blog dedicated to personal product analysis and first-hand usage reviews. This platform serves as a bridge connecting his professional insights with everyday practicalities, offering a deep dive into the world of various products.