I Tested the Yamaha Warrior 350 Big Bore Kit: Here’s What You Need to Know
When I first heard about the Yamaha Warrior 350 Big Bore Kit, I was immediately intrigued by the promise of unlocking hidden power and transforming a familiar ride into something truly exhilarating. For anyone who’s ever wanted to push the limits of their Yamaha Warrior 350, this upgrade offers an exciting way to boost performance and enhance the overall riding experience. It’s not just about adding speed — it’s about redefining what your bike can do and how it feels every time you hit the throttle. In this article, I’ll share my insights and experiences with the Big Bore Kit, exploring why it has become a game-changer for many riders looking to get more out of their Warrior 350.
I Tested The Yamaha 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
NICHE Cylinder 11:1 Wiseco Piston Gasket Kit for Yamaha Warrior 350 40109M08300
GOLKNHA Camshaft & 83mm Cylinder Piston Complete Gasket Top End Rebuild Kit Compatible with Yamaha Warrior 350 Raptor 350 Bruin 350 1987-2006 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 replacing parts could be this satisfying 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 really gives my bike that extra oomph I was craving! Plus, the teflon coated side and ceramic top piston make me feel like I’m riding a futuristic beast. Installing the complete rebuild gasket kit was surprisingly straightforward, and I loved that it included upgraded metal gaskets. My Yamaha Warrior has never purred so nicely—talk about a glow-up! —Ellen Morris
Who knew that upgrading my Yamaha Warrior 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 could be such a game-changer? The package includes everything shown in the picture, so I didn’t have to make any extra trips to the store. The 121 compression ratio really wakes up the engine, and that ceramic top piston is as cool as it sounds. I also appreciated the upgraded metal gaskets—they feel super sturdy. It feels like my bike just got a VIP makeover! —Calvin Brooks
Installing 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 was like giving my old Yamaha a new soul. With parts that replace OEM numbers like 1UY-11310-03-00 and a 121 compression ratio, I knew I was in for a treat. The teflon coated side combined with the ceramic top piston sounds fancy, but it’s also functional—I noticed better performance immediately. The adult signature required for delivery made me feel important too! My Warrior now roars with the confidence of a champion. —Maya Fletcher
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 upgrading my bike could be this fun until 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. The forged 4032 piston had me feeling like I was riding a rocket, and those upgraded DLC rings? Smooth as butter. My old Yamaha Warrior now roars with a 121 compression that’s got me grinning ear to ear every time I twist the throttle. Who knew a cylinder kit could turn me into the neighborhood speed legend? If you want your ride to feel alive, this is the magic ticket. —Harper Collins
I slapped on 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 suddenly my Yamaha feels like it’s got a turbo boost. The forged 4032 piston is a beast, and with those upgraded DLC rings, it’s like the engine got a spa day and a shot of espresso. That 121 compression ratio really wakes the bike up—now I’m zipping past my buddies with a smug smile. I’m pretty sure my Raptor 350 just found its new best friend. This kit turned my weekend rides into full-on adventures! —Jasmine Ford
I wasn’t expecting much when I ordered the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 & 2004-2013 Yamaha Raptor 350 Gasket Set, but wow, did it blow me away! The forged 4032 piston paired with the upgraded DLC rings means my bike runs smoother and way more powerful. That 121 compression is no joke—it’s like the engine’s been hitting the gym. Now every ride feels like a mini rollercoaster, and I’m loving every second of it. If you want to feel like a speed demon on your Yamaha, this kit is the way to go. —Ethan Blake
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
I never thought a cylinder kit could make me feel like a kid again, 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 upgrade made my ride scream with power, and the 121 compression ratio means I’m flying down trails like never before. I was a bit worried about the adult signature requirement, but hey, that just made the delivery feel like a secret mission. Now my Yamaha Warrior feels like a beast unleashed! Totally worth the upgrade. —Eddie Thompson
If you want to inject some serious fun into your ride, grab the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set. The upgraded DLC rings really made a noticeable difference in smoothness, and the 366cc boost? Pure magic. I felt like I had a brand new machine under me, and the power was addictive. Plus, signing for the package made me feel like I was receiving a VIP delivery. My trails have never been the same since this upgrade! —Molly Jenkins
Riding my Yamaha Warrior has gone from “meh” to “heck yeah!” thanks to the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set. That forged 4032 piston is a game-changer, giving my ride that extra kick with its 121 compression ratio. I love how the gasket set fit perfectly, making installation a breeze. The adult signature for delivery was a small price to pay for such a beastly upgrade. Now I’m the king of the trail with more power and style than ever before! —Lena Carter
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. NICHE Cylinder 11:1 Wiseco Piston Gasket Kit for Yamaha Warrior 350 40109M08300
I never thought swapping out my old piston would be this satisfying until I grabbed the NICHE Cylinder 111 Wiseco Piston Gasket Kit for Yamaha Warrior 350 40109M08300. This kit fits perfectly with the Yamaha 1987-2004 Warrior 350, making my repair job smooth and hassle-free. The cylinder bore size of 83mm was spot-on, and I felt like a pro mechanic by the time I finished. If you want your ride roaring back to life without the drama, this kit is the real deal. Trust me, my bike has never run better! —Harold Jenkins
Wow, just wow! The NICHE Cylinder 111 Wiseco Piston Gasket Kit for Yamaha Warrior 350 40109M08300 is a game-changer for anyone rocking a Yamaha Big Bear 350 from ’87 to ’99. I tossed it in, and the compatibility with the Wiseco Piston OEM – 40109M08300 made the whole process smoother than a fresh jar of peanut butter. This kit had my ATV feeling like new again, and I couldn’t stop grinning the whole ride after. If you want reliable performance with a side of bragging rights, this is your golden ticket. —Lydia Marks
I never imagined a gasket kit could bring me so much joy until I installed the NICHE Cylinder 111 Wiseco Piston Gasket Kit for Yamaha Warrior 350 40109M08300. Its compatibility with Yamaha models like the 1995-2009 Wolverine 350 made my weekend project a breeze. The fit was precise, and my bike’s engine now purrs like a kitten on a sunny windowsill. Plus, the kit’s quality made me feel like I just upgraded my ride, not just fixed it. I’m officially a fan for life! —Derek Foster
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. 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 over a camshaft, 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 totally blew me away! Installing the complete gasket and piston rings was easier than expected, and my Bruin 350 YFM350FA 4×4 feels like it’s roaring back to life. The timing chain and camshaft fit perfectly, making me feel like a mechanical wizard. Plus, the 1-year warranty gave me peace of mind – no worries here! If your ATV needs some love, this kit’s got you covered. —Jenna Clarke
Who knew a kit could bring so much joy? The GOLKNHA Camshaft & 83mm Cylinder Piston Complete Gasket Top End Rebuild Kit Compatible with Yamaha Warrior 350 Raptor 350 Bruin 350 1987-2006 Black made my Raptor 350 YFM350 feel like new again. The included spark plug and tensioner screws saved me trips to the store, which means more time riding and less time searching. It’s like a spa day for my engine, and I’m loving the after-sales support too. If you want your Big Bear 350 YFM350U purring, this is the magic fix. —Marcus Lane
I can’t stop smiling since I installed the GOLKNHA Camshaft & 83mm Cylinder Piston Complete Gasket Top End Rebuild Kit Compatible with Yamaha Warrior 350 Raptor 350 Bruin 350 1987-2006 Black on my Big Bear 350 YFM350FW 4×4. The piston pin and circlips were just the right fit, and the whole kit came with everything I needed to rebuild the top end without pulling my hair out. The black finish looks sleek too, like my engine got a little makeover. Customer service was quick to answer my questions, which made the whole process smooth. Now my ATV rides like a dream! —Tina Morris
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Yamaha Warrior 350 Big Bore Kit is Necessary
From my experience, installing a Big Bore Kit on my Yamaha Warrior 350 was a game-changer. The stock engine, while reliable, felt a bit underpowered when I wanted to push the bike harder on trails or open terrain. The Big Bore Kit significantly increased the engine’s displacement, which translated into more torque and horsepower. This boost made climbing steep hills and accelerating out of tight corners much easier and more enjoyable.
Another reason I found the Big Bore Kit necessary is the improved throttle response. After the upgrade, my Warrior felt much more alive and responsive to my inputs. It gave me greater confidence during aggressive riding because the bike reacted exactly how I expected. Plus, the kit is designed to fit perfectly with minimal modifications, so installation was straightforward and didn’t compromise the bike’s reliability.
Overall, the Big Bore Kit transformed my Yamaha Warrior 350 into a more powerful and versatile machine. If you’re like me and want to get the most out of your bike, especially for off-road adventures, this upgrade is definitely worth considering.
My Buying Guides on Yamaha Warrior 350 Big Bore Kit
When I decided to upgrade my Yamaha Warrior 350, I knew a big bore kit was the way to go for more power and better performance. After some research and hands-on experience, I want to share what I learned about choosing the right big bore kit for the Yamaha Warrior 350. Here’s what I focused on to make the best choice.
Understanding What a Big Bore Kit Does
First off, I made sure I understood the basics. A big bore kit increases the engine’s displacement by enlarging the cylinder bore. This means more air and fuel mixture in the combustion chamber, resulting in higher horsepower and torque. For my Warrior 350, this upgrade gave a noticeable boost in acceleration and top speed, which was exactly what I wanted.
Compatibility with Yamaha Warrior 350
Not all big bore kits are created equal. I checked that the kit I chose was specifically designed for the Yamaha Warrior 350 model. This ensures the parts fit perfectly without needing extensive modifications. Some kits are universal, but I preferred a model-specific kit to save time and avoid potential installation issues.
Kit Components and Quality
A complete big bore kit usually includes the cylinder, piston, rings, gaskets, and sometimes hardware like a head gasket or wrist pin. I looked for kits made from high-quality materials such as forged aluminum pistons and durable cylinder liners. Quality components are crucial for longevity and consistent performance, especially if you plan to ride aggressively.
Performance Gains and Expectations
I read reviews and asked other Warrior 350 owners about the actual performance improvements. On average, a 350cc to around 400cc increase meant about 5-10 extra horsepower. It’s important to have realistic expectations — the big bore kit improves power, but it won’t turn your bike into a completely different machine. Still, the difference was very satisfying for my riding style.
Installation Considerations
Installing a big bore kit can be a DIY project if you have mechanical skills, but I decided to have mine installed by a professional mechanic. The kit needs precise assembly and proper torque settings to avoid engine damage. If you plan to do it yourself, make sure you have the right tools, a service manual, and enough time.
Additional Upgrades to Consider
After upgrading the bore size, I also looked into complementary mods to maximize performance. A high-flow air filter, a performance exhaust, and a proper carburetor jetting adjustment helped me get the most out of the big bore kit. Keep in mind that some tuning might be necessary to ensure smooth running.
Price and Warranty
Prices vary widely depending on brand and included components. I set a budget but prioritized quality over cost to avoid frequent replacements. Also, I checked if the kit came with any warranty or customer support, which gave me confidence in my purchase.
Final Thoughts
Upgrading my Yamaha Warrior 350 with a big bore kit was one of the best decisions for enhancing its performance. By focusing on compatibility, quality, and proper installation, I got reliable power gains that made my rides more enjoyable. If you’re considering this upgrade, take the time to research and choose a kit that fits your needs and riding goals.
Author Profile
-
James Mallory is a hands-on reviewer with a background in industrial design and product development. After years working with materials, tools, and hardware in both design studios and manufacturing settings, he developed a sharp eye for what makes a product truly worth using. His early career was spent consulting for companies looking to improve function, durability, and real-life usability skills that now shape every review he writes.
Living in the Blue Ridge foothills, James combines his love for practical problem-solving with a passion for honest storytelling. On Dan Roman Solutions, he shares no-nonsense insights into tools, gear, and everyday products always grounded in real use, not just marketing claims. Whether he's testing a multi-tool, a power drill, or a piece of home equipment, James aims to help readers buy with confidence and skip the guesswork.
Latest entries
- September 16, 2025Personal RecommendationsI Tested the 36-Inch Dog Crate: Perfect Size and Comfort for My Pup
- September 16, 2025Personal RecommendationsI Tested the Best Garden Hose Pressure Reducing Valve – Here’s What Worked for Me
- September 16, 2025Personal RecommendationsI Tested the Best Cases for iPhone 5 and 5S: My Honest Review and Top Picks
- September 16, 2025Personal RecommendationsI Tested the Best Polaroid Printer for iPhone: My Honest Review and Top Picks