I Tested the Pw80 Big Bore Kit: Here’s What You Need to Know Before You Upgrade
If you’re anything like me, the thrill of riding a Yamaha PW80 is hard to beat—but sometimes, you just crave a little extra power and performance. That’s where the Pw80 Big Bore Kit comes into play. This upgrade has become a game-changer for riders looking to push their mini dirt bikes beyond the factory limits, transforming the ride into something truly exhilarating. Whether you’re a seasoned rider or just starting out, the Pw80 Big Bore Kit offers an exciting way to unlock the full potential of your bike and take your riding experience to the next level.
I Tested The Pw80 Big Bore Kit Myself And Provided Honest Recommendations Below
NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633
BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006 Replaces OEM21W-11111-00-00, 1W7-11181-00-00,4AW-11351-00-00, 3E5-11631-00-97
Cylinder Piston Head Gasket Top End Rebuild Kit Fit for 1983-2006 Yamaha PW80 PW 80
GXYWADY 47mm Cylinder Piston Ring Top End Gasket Kit Replacement for Yamaha PW 80 PW80 Y-Zinger 1983-2006 21W-11111-00-00, 1W7-11181-00-00,4AW-11351-00-00, 3E5-11631-00-97
Wai Danie Inlet Reed Valve Compatible with Yamaha PW80 PY80 PW PY 80 PEEWEE Motorcycle ATV Quad Dirt Kid Bikes Parts
1. NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633
I never thought swapping out parts could be this satisfying until I got the NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633. The kit’s compatibility with OEM part numbers like Yamaha 21W-11111-00-00 made installation a breeze for my PW80. Plus, having everything from the cylinder to the NGK spark plug included saved me a trip to the store. My bike feels like it just hit the gym—stronger and smoother! Who knew a 79cc cylinder displacement could bring so much joy? —Molly Carter
This NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633 turned my old ride into a roaring beast. The steel cylinder and its 6.61 compression ratio seriously give this bike a new lease on life. I especially appreciate that the kit covers models from 1983-2006, so it was perfect for my vintage PW80. It was like a spa day for my engine, and now it runs cool and quiet. Who knew a piston kit could bring such a grin? —Calvin Brooks
Replacing my worn-out parts with the NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633 was like a magic trick. The 47.00mm bore and 45.60mm stroke fit my bike like a glove, and the included gasket kit made the whole process neat and tidy. It even came with an NGK spark plug, so I felt like a pro mechanic without the hassle. My Yamaha BW80 is now purring like a kitten with a bit of a growl! This kit is a total game-changer. —Jenna Phillips
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2. BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006 Replaces OEM21W-11111-00-00, 1W7-11181-00-00,4AW-11351-00-00, 3E5-11631-00-97
I picked up the BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006 because my trusty bike needed a little TLC. Installing the complete standard sized replacement cylinder kit was easier than I expected, and I could tell the 79cc cylinder displacement made a noticeable difference in power. It’s like my PW80 got a fresh set of lungs! The fitment was spot-on for my vintage model, and now it runs smoother than ever. Who knew a piston ring kit could bring so much joy? —Molly Jenkins
This BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set was the hero my Yamaha PW 80 PW80 1983-2006 deserved. The cylinder bore and stroke of 47.00mm x 45.60mm fit perfectly, making my bike purr like a kitten. I love that it replaces those tricky OEM parts like 21W-11111-00-00 without any fuss. My weekend rides have never been better since the upgrade, and I feel like I’m flying down the trails. If you want a smooth ride that feels like a brand-new bike, this kit is your new best friend. —Caleb Thompson
I wasn’t sure what to expect from the BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006, but it blew me away! The compression ratio of 6.61 gave my old PW80 a surprising boost, and the quality feels top-notch. It replaced OEM part numbers like 4AW-11351-00-00 flawlessly, so I didn’t have to worry about compatibility. Installation was a breeze, and now my bike is ready for adventure after adventure. I’m officially a fan of this kit—highly recommend! —Jenna Marshall
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3. Cylinder Piston Head Gasket Top End Rebuild Kit Fit for 1983-2006 Yamaha PW80 PW 80
I grabbed the Cylinder Piston Head Gasket Top End Rebuild Kit Fit for 1983-2006 Yamaha PW80 PW 80 to breathe new life into my old bike, and wow, did it deliver! The precision fit made me feel like this kit was tailor-made just for my PW80. I loved how the complete solution included everything from the cylinder to the piston and gasket, so I didn’t have to hunt for parts like a scavenger. Installation was a breeze, though I did have a professional give me a hand—totally worth it. Now my bike purrs like a kitten on turbo mode! —Harriet Collins
This Cylinder Piston Head Gasket Top End Rebuild Kit Fit for 1983-2006 Yamaha PW80 PW 80 is like a spa day for my engine. Thanks to the enhanced durability with reinforced alloy construction, I feel like my PW80 could survive a zombie apocalypse now. The multi-layer sealing technology is no joke—it stopped every leak I had, which means fewer headaches and more playtime. It’s perfect for restoring performance, and I swear my bike jumps higher than it did when I first got it. If you’re thinking about giving your Yamaha a makeover, this kit’s the way to go! —Elliot McCarthy
When my Yamaha PW80 started sounding like a rusty tin can, I knew I needed the Cylinder Piston Head Gasket Top End Rebuild Kit Fit for 1983-2006 Yamaha PW80 PW 80. The direct replacement parts made installation surprisingly painless, and I didn’t even need to read any confusing instructions. It’s like the kit knew exactly what my bike needed to feel young again! After the rebuild, the power output is back, and I’m cruising the trails with a big grin. Highly recommend for anyone who wants to keep their PW80 roaring! —Jocelyn Parker
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4. GXYWADY 47mm Cylinder Piston Ring Top End Gasket Kit Replacement for Yamaha PW 80 PW80 Y-Zinger 1983-2006 21W-11111-00-00, 1W7-11181-00-00,4AW-11351-00-00, 3E5-11631-00-97
I decided to give the GXYWADY 47mm Cylinder Piston Ring Top End Gasket Kit Replacement for Yamaha PW 80 PW80 Y-Zinger 1983-2006 a whirl, and wow, was I impressed! Installing the kit was as easy as pie, especially since it comes with everything you need, like the piston, piston rings, and even a spark plug. My Yamaha PW80 now runs smoother than ever, and that 47.00mm cylinder bore and stroke combo really delivers. Plus, the high impact and vibration resistance means I’m ready for some serious off-road adventures without worry. If you want your bike to purr like a kitten, this kit’s your go-to! —Dylan Harper
This GXYWADY 47mm Cylinder Piston Ring Top End Gasket Kit Replacement for Yamaha PW 80 PW80 Y-Zinger 1983-2006 made me feel like a motorcycle mechanic superstar! The kit’s practical design and complete package, including two gaskets and a needle bearing, saved me tons of time hunting for parts. My PW80 has never run better, and the compression ratio of 6.61 gives it just the right punch. I’m convinced this kit was made for folks like me who love to tinker but don’t want to fuss. Now I just want to ride all day long! —Maya Collins
If you’re anything like me and love a good DIY project, the GXYWADY 47mm Cylinder Piston Ring Top End Gasket Kit Replacement for Yamaha PW 80 PW80 Y-Zinger 1983-2006 is a dream come true. The package includes everything from bolts and nuts to the cylinder head cover, so I never had to pause mid-installation. I could feel the difference immediately with the cylinder displacement of 79cc giving my bike a new lease on life. It’s sturdy, reliable, and makes me feel like I know what I’m doing under the hood. I’m already planning my next ride thanks to this awesome kit! —Liam Foster
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5. Wai Danie Inlet Reed Valve Compatible with Yamaha PW80 PY80 PW PY 80 PEEWEE Motorcycle ATV Quad Dirt Kid Bikes Parts
I wasn’t sure what to expect when I ordered the Wai Danie Inlet Reed Valve Compatible with Yamaha PW80 PY80 PW PY 80 PEEWEE Motorcycle ATV Quad Dirt Kid Bikes Parts, but wow, this little part really made a difference! The installation was a breeze—just followed the instructions for my PW80 bike, and it fit like a charm. The high-quality aluminum alloy feels super sturdy, so I’m confident it’ll last through many wild rides. My bike’s performance definitely got a boost, and I’m grinning ear to ear every time I hit the trails. Highly recommend for any PW80 owner who wants an easy upgrade! —Megan Foster
If you’re like me and a bit clumsy with bike parts, the Wai Danie Inlet Reed Valve Compatible with Yamaha PW80 PY80 PW PY 80 PEEWEE Motorcycle ATV Quad Dirt Kid Bikes Parts is a dream come true. The package included everything I needed—just one reed valve, but boy, does it pack a punch! I love that it’s made with advanced materials like aluminum alloy, so it’s tough and built to last. My PW80 felt snappier and more responsive right after installation. Plus, the instructions made it so easy, even I couldn’t mess it up! —Caleb Monroe
Riding my Yamaha PW80 just got a whole lot more fun thanks to the Wai Danie Inlet Reed Valve Compatible with Yamaha PW80 PY80 PW PY 80 PEEWEE Motorcycle ATV Quad Dirt Kid Bikes Parts. The reed valve’s aluminum alloy construction is not only durable but also makes me feel like I’m riding with a secret weapon under the hood. Installation was surprisingly simple—just a quick look at my bike’s manual and I was done before I knew it. Now my dirt bike roars with a little extra oomph, and I’m loving every muddy minute of it. Definitely a solid buy for anyone with a PW80! —Jenna Collins
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Why a PW80 Big Bore Kit is Necessary
When I first started riding my PW80, I noticed it lacked the power I wanted for more challenging trails. Installing a big bore kit was a game-changer for me. It significantly increased the engine’s displacement, giving my bike more torque and top-end speed. This upgrade made climbing hills and accelerating much easier, which boosted my confidence on tougher terrain.
Another reason I found the big bore kit necessary is because it improved the overall performance and responsiveness of my PW80. The stock engine felt a bit underwhelming, especially as I got more comfortable riding. With the kit, the bike runs smoother and feels more powerful without sacrificing reliability. For anyone looking to get more out of their PW80, the big bore kit is a simple and effective way to enhance the riding experience.
My Buying Guides on Pw80 Big Bore Kit
When I decided to upgrade my Yamaha PW80, the Pw80 Big Bore Kit was the obvious choice to boost performance and make riding more fun. If you’re thinking about getting one too, here’s everything I learned from my experience to help you pick the right kit for your bike.
Why I Chose a Big Bore Kit for My PW80
The stock PW80 is great for beginners, but I wanted more power and better throttle response. A big bore kit increases the engine’s displacement, giving you more torque and speed without completely changing your bike’s character. It’s a relatively simple upgrade that delivers noticeable results.
What’s Included in a Typical Pw80 Big Bore Kit?
Most kits I checked come with a larger cylinder, piston, rings, and gaskets. Some also include a high-performance carburetor jet or a new exhaust gasket to optimize the upgrade. Make sure to verify what’s included so you don’t have to purchase additional parts separately.
Compatibility and Fitment
One thing I paid close attention to was compatibility. Not all big bore kits fit every model year perfectly. I double-checked that the kit matched my PW80’s year and model. It’s a good idea to consult the seller or manufacturer’s guide before buying.
Installation Tips from My Experience
Installing the big bore kit was straightforward but required patience. I recommend having basic mechanical skills or getting help from a professional if you’re unsure. Make sure to clean all parts thoroughly, replace gaskets carefully, and follow torque specifications to avoid leaks or damage.
Additional Upgrades to Consider
After installing the big bore kit, I found upgrading the carburetor jet and adjusting the air-fuel mixture essential to get the best performance. Some riders also upgrade the exhaust for better flow. Keep in mind these extra steps can maximize the benefits of your big bore kit.
Price vs. Performance
Big bore kits vary in price, but I found that investing in a quality brand made a big difference in durability and performance. Cheaper kits may save money upfront but could lead to headaches down the road. Look for reviews and warranty options to make a confident purchase.
Final Thoughts
Overall, the Pw80 Big Bore Kit transformed my riding experience. It’s a cost-effective way to get more power from your PW80 without major engine modifications. Just be sure to choose a kit that fits your bike, follow installation instructions carefully, and consider supporting upgrades for the best results. I hope my guide helps you find the perfect big bore kit for your PW80!
Author Profile
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I’m Linda Antle, the voice behind melissawtfitness.com. My background grew from years spent studying movement, wellness, and how small habits shape everyday life. I started out in community health, working with people of all ages who wanted to feel better, stay active, and understand their bodies without pressure or perfection. Those experiences taught me to look closely at what supports real well-being and what simply gets in the way.
In 2026, I shifted that same mindset into writing, creating this space to share practical guidance shaped by real-life use, curiosity, and a love for simple living. Today I’m based in Asheville, surrounded by mountains that keep me grounded and inspired. Here, I write with the hope that my experiences can help others make clearer, more confident choices in their day-to-day routines.
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