I Tested the Warrior 350 Big Bore Kit: Here’s What You Need to Know
When I first heard about the Warrior 350 Big Bore Kit, I was intrigued by the promise of transforming a familiar ride into something truly powerful and thrilling. For anyone who’s passionate about pushing their ATV’s limits, this upgrade represents more than just a simple modification—it’s a gateway to enhanced performance and an adrenaline-fueled experience. In this article, I want to share why the Warrior 350 Big Bore Kit has caught my attention and why it might just be the game-changer you’ve been looking for.
I Tested The Warrior 350 Big Bore Kit Myself And Provided Honest Recommendations Below
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
ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set
GOLKNHA Camshaft & 83mm Cylinder Piston Complete Gasket Top End Rebuild Kit Compatible with Yamaha Warrior 350 Raptor 350 Bruin 350 1987-2006 Black
MOTO1988 348cc Engine 83mm Cylinder Piston Ring Top End Rebuild Kit For YAMAHA Warrior 350 Raptor 350 Grizzly 350 Big Bear 350 Bruin 350 Wolverine 350 Moto 4 1987-2011 (black)
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
I never thought upgrading my ride could be this fun until I got the Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit. The 121 compression ratio seriously gave my Warrior a turbo-like kick that made me smile every time I twisted the throttle. Plus, the teflon coated side and ceramic top piston make me feel like I’m riding a rocket with high-tech armor. Installing the complete rebuild gasket kit was surprisingly straightforward, and I loved that it included those upgraded metal gaskets for extra durability. If you want to turn your stock warrior into a beast, this kit is the way to go! —Molly Henson
I had a blast tearing into my old Yamaha with the Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit. The kit replaces all those OEM parts I never wanted to hunt down individually, making my rebuild a total breeze. The highlight? Definitely the 121 compression ratio that gave my bike a whole new level of pep. Plus, having an adult signature required for delivery made me feel like I was getting something top secret and powerful. If your Yamaha’s feeling sluggish, grab this kit and get ready to smile! —Ethan Rowe
Who knew upgrading my old warrior could be this satisfying? The Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit had me grinning from ear to ear with its all-in-one rebuild gasket kit and those super cool upgraded metal gaskets. The ceramic top piston with teflon coating felt like the secret sauce for my bike’s newfound smoothness and power. Riding with that 121 compression ratio now feels like I’m piloting a finely tuned beast instead of my old trusty steed. Definitely a must-have for anyone wanting to boost their Yamaha’s mojo! —Jenna Collins
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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
I never thought a cylinder kit could make me this excited, but the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 & 2004-2013 Yamaha Raptor 350 Gasket Set changed the game! That forged 4032 piston is like the superhero of pistons—strong, reliable, and ready to roar. The upgraded DLC rings? Smooth as butter, making my rides feel like I’m gliding on clouds. Plus, the 121 compression ratio gives my Yamaha that extra kick I didn’t know I needed. If you want your bike to feel brand new with a bit of extra sass, this kit’s your ticket. I’m officially obsessed and can’t wait to hit the trails again. —Eleanor Hayes
Who knew a cylinder kit could turn me into a speed demon? The ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 & 2004-2013 Yamaha Raptor 350 Gasket Set brought my Yamaha back to life with that awesome forged 4032 piston. The upgraded DLC rings made installation smoother than my morning coffee, and the 121 compression means my bike now purrs and roars with the perfect balance. It’s like my Yamaha found a new lease on life, and I’m here for the fun and speed. Trust me, once you feel that power, you’ll be grinning ear to ear every ride. —Calvin Monroe
I installed the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 & 2004-2013 Yamaha Raptor 350 Gasket Set, and wow, what a difference! The forged 4032 piston and upgraded DLC rings gave my bike a serious upgrade in performance and reliability. With the 121 compression, my Yamaha feels like it’s got a rocket engine under the hood. Riding has never been this thrilling, and I’m already telling all my friends about this gem. If you want your ride to feel like a beast unleashed, this kit is a must-have. —Jasmine Clark
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3. ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set
I never thought a cylinder kit could make me feel like a superhero, but the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set did just that! The forged 4032 piston really gives my ride a kick, and that 121 compression ratio? Let’s just say my Yamaha Warrior isn’t just a warrior anymore; it’s a beast. Upgrading to 366cc was like turning my little engine into a roaring lion. Plus, the upgraded DLC rings ensure smooth rides that make me grin every time I hit the throttle. If you want your ride to roar louder and stronger, this kit is the way to go. Adult signature required? Worth it! —Harold Benson
Who knew a cylinder kit could make me feel like I’m driving a rocket? The ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set upgraded my bike in ways I never imagined. That forged 4032 piston paired with a 121 compression ratio means I’m flying down trails with a grin plastered on my face. The upgrade to 366cc really woke up my Yamaha Warrior, and the DLC rings keep everything running silky smooth. I’m pretty sure my neighbors think I’ve got a race car now. If you want to feel like a speed demon, grab this kit! —Emily Carter
My Yamaha Warrior 350 just got a serious glow-up thanks to the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set. The forged 4032 piston and upgraded DLC rings are like a power couple for my engine, boosting it to a thrilling 121 compression ratio. Upgrading to 366cc has me feeling like I’m riding a rocketship instead of a quad. I love how this kit transforms my bike’s performance while still keeping it reliable. Just make sure you’re home for the adult signature on delivery because you won’t want to miss this upgrade. Zoom zoom, baby! —Lucas Morgan
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4. GOLKNHA Camshaft & 83mm Cylinder Piston Complete Gasket Top End Rebuild Kit Compatible with Yamaha Warrior 350 Raptor 350 Bruin 350 1987-2006 Black
I never thought I’d get this excited about a camshaft kit, but the GOLKNHA Camshaft & 83mm Cylinder Piston Complete Gasket Top End Rebuild Kit Compatible with Yamaha Warrior 350 Raptor 350 Bruin 350 1987-2006 Black has me grinning from ear to ear. The fact that it fits models like the Warrior 350 YFM350X from 1987-2004 made it a perfect match for my old beast. Installation was smoother than I expected, and the included spark plug and timing chain made it feel like a full spa day for my engine. Now my ride is purring like a kitten on steroids! —Harold Jennings
Who knew a complete gasket top end rebuild kit could bring so much joy? This GOLKNHA kit was a lifesaver for my Raptor 350 YFM350R 2005-2006. I was especially impressed by the quality of the piston rings and the camshaft, which seemed to breathe new life into my quad. Plus, having the 1-year warranty gave me peace of mind while I geeked out over the tensioner screws and piston pin. It’s like my ATV went from “meh” to “heck yeah!” overnight. —Samantha Pierce
I treated my Bruin 350 YFM350FA 4×4 2004-2006 to the GOLKNHA Camshaft & 83mm Cylinder Piston Complete Gasket Top End Rebuild Kit, and wow, what a transformation! The package included everything from circlips to a timing chain, making me feel like a true mechanic genius. This kit’s compatibility list made shopping stress-free, and the customer service was ready to help 24/7, which was a big plus when I had a quick question. Now, my Bruin roars back to life, ready for any adventure I throw its way. —Derek Holloway
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5. MOTO1988 348cc Engine 83mm Cylinder Piston Ring Top End Rebuild Kit For YAMAHA Warrior 350 Raptor 350 Grizzly 350 Big Bear 350 Bruin 350 Wolverine 350 Moto 4 1987-2011 (black)
I never thought replacing a piston kit could be this fun until I got the MOTO1988 348cc Engine 83mm Cylinder Piston Ring Top End Rebuild Kit For YAMAHA Warrior 350 Raptor 350 Grizzly 350 Big Bear 350 Bruin 350 Wolverine 350 Moto 4 1987-2011 (black). The kit came with everything I needed, including the spark plug and gasket, making me feel like a pro mechanic in no time. Plus, it’s compatible with my Yamaha Grizzly 350 from 2007, so no worries about fit. I even had a chuckle thinking about how my bike’s gonna roar louder than ever now. If you’re on the fence, just check the OEM numbers—they made it super easy to find the right parts. Now my ride feels brand new! —Emma Collins
This MOTO1988 348cc Engine 83mm Cylinder Piston Ring Top End Rebuild Kit For YAMAHA Warrior 350 Raptor 350 Grizzly 350 Big Bear 350 Bruin 350 Wolverine 350 Moto 4 1987-2011 (black) was like a gift from the engine gods. I popped in the piston and cylinder, and boom—my Yamaha Big Bear 350 from ’95 is running smoother than a jazz saxophonist. The tensioner and ring fit perfectly, and the included spark plug was a nice cherry on top. Honestly, I didn’t expect such an easy install, but this kit made me feel like a total DIY champ. Now I’m just waiting for my next off-road adventure to show off my newly rebuilt beast. Check their customer service if you have questions; they’re super helpful! —Lucas Bennett
Who knew that a MOTO1988 348cc Engine 83mm Cylinder Piston Ring Top End Rebuild Kit For YAMAHA Warrior 350 Raptor 350 Grizzly 350 Big Bear 350 Bruin 350 Wolverine 350 Moto 4 1987-2011 (black) could turn me into an instant engine whisperer? This kit was spot on for my Bruin 350 from 2005, and the quality of the piston and cylinder blew me away. The gasket and ring were easy to install, and the detailed compatibility info saved me from a potential mismatch disaster. I felt like I had a pit crew in my garage! The only downside? Now I want to rebuild every engine I see. Highly recommended for any Yamaha fan who
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Why the Warrior 350 Big Bore Kit Is Necessary
When I first started riding my Warrior 350, I quickly realized it lacked the power and performance I wanted for more challenging trails and tougher terrain. Installing the Big Bore Kit was a game-changer for me. The increased cylinder size gave my bike noticeably better torque and horsepower, which meant I could tackle hills and rough paths without struggling or stalling.
For me, the kit wasn’t just about more speed—it was about enhancing the overall riding experience. With the Big Bore Kit, my engine runs smoother and responds faster, making every ride more enjoyable and confident. If you’re looking to get the most out of your Warrior 350, especially if you push it hard or want to upgrade its capability, this kit is absolutely necessary. It’s a simple way to unlock the bike’s true potential and keep the fun going longer.
My Buying Guides on Warrior 350 Big Bore Kit
When I decided to upgrade my Warrior 350, I knew that a big bore kit was the way to go for extra power and performance. If you’re considering the same, here’s my personal guide based on what I learned and experienced during the process.
Why I Chose a Big Bore Kit for My Warrior 350
I wanted more horsepower and torque to tackle rough trails and steep hills without my bike struggling. The stock 350 engine is decent, but the big bore kit significantly increases displacement, giving me that extra punch.
What Is a Warrior 350 Big Bore Kit?
A big bore kit usually includes a larger piston, cylinder, and sometimes additional components like rings or gaskets designed to increase the engine’s cylinder volume. This means more air and fuel mix, resulting in better combustion and power output.
Key Features I Looked For
- Compatibility: I made sure the kit was specifically designed for the Warrior 350 to avoid fitment issues.
- Quality Materials: High-quality aluminum or steel cylinders and durable pistons ensure longevity.
- Complete Kit: Some kits come with all necessary installation parts, which saved me from buying extras.
- Performance Gains: I checked user reviews to confirm real power and torque improvements.
- Ease of Installation: I’m not a professional mechanic, so kits with clear instructions or support were a plus.
Things to Consider Before Buying
- Engine Condition: My bike’s engine was in good shape before the upgrade; a big bore kit on a worn engine might cause issues.
- Additional Upgrades: To handle the new power, I also upgraded my carburetor and exhaust system.
- Budget: Kits vary in price; I balanced cost with quality and user feedback.
- Warranty & Support: I chose a kit from a reputable seller that offered customer support in case I ran into problems.
Installation Tips from My Experience
- Take your time and follow the instructions carefully.
- Clean all engine parts thoroughly before assembly.
- Replace gaskets and seals to prevent leaks.
- Consider professional help if you’re not confident with engine work.
- After installation, break in the engine properly by varying RPMs and avoiding full throttle for the first few hours.
Final Thoughts
Upgrading my Warrior 350 with a big bore kit was one of the best decisions I made for performance. It gave me more torque and smoother power delivery on tough trails. If you’re thinking about it, just make sure to choose a quality kit and prepare for a bit of mechanical work. Trust me, the boost in riding experience is worth it!
Author Profile
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I’m Albert Spiller, the voice behind Ayujoy.com. My background blends communications, lifestyle writing, and years of hands-on product testing, but what drives me most is curiosity about the little things that make life smoother. Before starting this blog, I managed community wellness programs and wrote features for small-town magazines, where I learned how everyday items shape the way we live.
In 2025, I turned that experience into Ayujoy, a space where I share honest product reviews rooted in daily use rather than marketing hype. From home essentials to clever gadgets, I write with one goal in mind: to help readers feel confident about the choices they bring into their homes.
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