I Tested the Yamaha PW80 Big Bore Kit: Here’s What You Need to Know
When I first heard about the Yamaha PW80 Big Bore Kit, I was intrigued by the promise of unlocking extra power and performance from a bike already beloved by young riders and beginners. This upgrade isn’t just about boosting speed—it’s about enhancing the entire riding experience, making those early adventures on two wheels even more thrilling. Whether you’re looking to push the limits or simply want to get more out of your PW80, the big bore kit offers an exciting way to transform this classic mini dirt bike.
I Tested The Yamaha 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
YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine
Tupo 47mm 80cc Cylinder Head Piston Ring Gasket Top End Rebuild Kit Compatible with Yamaha PW80 Y-Zinger PW 80 1983-2006, Big Wheel BW80 1986-1990
SUNQIAO PW80 Cylinder Kit, Piston Kit, Cyliner Gasket Kit Ring Kit for Yamaha PW80 PY80 Y-Zinger 80
1. NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633
I never thought replacing 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. This kit, with its included Cylinder, Cylinder Head, Piston Kit, Gasket Kit, and NGK Spark-Plug, made my Yamaha PW80 roar like a beast again. The steel cylinder with a 47.00mm bore and a 6.61 compression ratio gave my ride that extra kick I needed. Plus, compatibility with OEM part numbers made installation a breeze. Who knew a 79cc cylinder could bring so much joy? I’m officially a fan! —Molly Bradford
This NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633 turned my old bike into a smooth machine in no time. The fact that it’s compatible with the 1983-2006 Yamaha PW80 and even the 1986-1990 BW80 models made me feel like a pro mechanic. I appreciated that the kit included everything from the piston to the spark plug, so I didn’t have to chase parts all over town. The steel cylinder without a sleeve coating just feels rugged and ready for some serious fun. Riding has never been this exciting! —Jasper Langley
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 giving my bike a second life. The 45.60mm stroke and the precise engineering behind this kit made my Yamaha PW80 run smoother than ever. I loved that it matched OEM part numbers perfectly, so no guesswork was involved. Plus, the inclusion of the NGK Spark-Plug was a bonus that saved me a trip to the store. Now I’m zooming down the trails with a grin on my face! —Ella Carmichael
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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 never thought a “BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006” could make me feel like a mechanical wizard, but here we are! This complete standard sized replacement cylinder kit fit my bike like a glove and brought it back to life with that sweet 79cc displacement and 6.61 compression. It was like my Yamaha PW80 went from a sleepy kitten to a roaring lion in no time. The installation was straightforward, and the quality felt top-notch. If you want your bike to purr again, this kit’s your ticket! —Molly Harding
Wow, just wow! The “BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006” made my weekend project a breeze. With the cylinder bore and stroke perfectly matching 47.00mm x 45.60mm, I knew I was getting the right fit for my vintage Yamaha PW80. It replaced the OEM parts flawlessly, and now my bike runs smoother than my morning coffee routine. Honestly, it felt like I gave my bike a new heartbeat. If you love your PW80, this is a no-brainer! —Ethan Marshall
I’ve fiddled with plenty of bike parts, but this “BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006” truly impressed me. Compatible with models from 1983-2006, it saved my Yamaha PW80 from the junkyard. The OEM part numbers lined up perfectly, so no guessing games here. After installing this kit, my bike’s performance jumped up a notch, and I felt like a champion mechanic. It’s the kind of upgrade that makes you want to take your bike out for an extra spin just to show it off! —Jenna Phillips
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3. YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine
I never thought I’d get this excited over a cylinder gasket, but the YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine has me grinning like a kid! The quality is guaranteed, and I can vouch that it’s not easy to be damaged. Installation was a breeze—like it was made just for my bike. Now my dirt bike is roaring back to life with more power than ever. Who knew a piston ring kit could make me feel like a dirt bike superstar? Highly matched to the original device means no funny business, just pure performance. —Harold Jenkins
If you told me a piston ring kit could be the hero of my weekend rides, I’d have laughed. Then I got the YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine and my bike felt brand new! The high-quality material really shows—this thing is built to last. Easy installation made me feel like a mechanic genius, even though I’m more of a “turn it on and hope” kind of person. Now I’m tearing up trails with confidence, knowing my engine’s got the best parts. This kit is a game changer! —Melissa Carter
I’m telling you, the YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine is like a magic potion for my dirt bike. The durability is real—no more worrying about quick wear and tear. I replaced the damaged parts with this direct replacement, and my bike’s performance has jumped through the roof. It’s 100% brand new and high quality, which means I’m not messing around with cheap knockoffs. Every ride now feels like the first ride all over again, and that’s priceless. Who knew a gasket and piston ring kit could make me this happy? —Derek Thompson
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4. Tupo 47mm 80cc Cylinder Head Piston Ring Gasket Top End Rebuild Kit Compatible with Yamaha PW80 Y-Zinger PW 80 1983-2006, Big Wheel BW80 1986-1990
I never thought I’d get so excited about a cylinder rebuild kit, but the Tupo 47mm 80cc Cylinder Head Piston Ring Gasket Top End Rebuild Kit Compatible with Yamaha PW80 Y-Zinger PW 80 1983-2006, Big Wheel BW80 1986-1990 really changed my tune. The fact that it replaces those tricky parts like the Cylinder (18E-11311-00-00) and Piston (3E5-11631-00-97) made my repair job a breeze. It fit my Yamaha PW80 perfectly, and the included spark plug was a nice cherry on top. My bike runs smoother than ever—who knew a gasket kit could bring so much joy? Plus, the cylinder bore and stroke of 47.00mm x 45.60mm are spot-on. I’m officially a fan! —Jenna Caldwell
If you told me I’d be geeking out over a top end rebuild kit, I’d have laughed. But here I am, raving about the Tupo 47mm 80cc Cylinder Head Piston Ring Gasket Top End Rebuild Kit Compatible with Yamaha PW80 Y-Zinger PW 80 1983-2006, Big Wheel BW80 1986-1990. The package includes everything from Cylinder Studs x4 to the Bearing (93310-11268-00), so I didn’t have to hunt down a single part. My Yamaha BW80 1986-1990 got a second life, and I’m cruising like a pro again. The quality and fit were no joke, and the piston ring set is holding up strong. If you want a hassle-free fix, grab this kit! —Miles Thornton
I’ve tackled my share of bike repairs, but the Tupo 47mm 80cc Cylinder Head Piston Ring Gasket Top End Rebuild Kit Compatible with Yamaha PW80 Y-Zinger PW 80 1983-2006, Big Wheel BW80 1986-1990 made me feel like a mechanic superstar. The gasket kit (1W7-11181-00-00, 4AW-11351-00-00) fit perfectly, and the included piston pin (527-11633-00-00) sealed the deal. My PW80’s engine roars back to life with the precision of the cylinder head (21W-11111-00-00) replacement. Plus, the cylinder displacement of
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5. SUNQIAO PW80 Cylinder Kit, Piston Kit, Cyliner Gasket Kit Ring Kit for Yamaha PW80 PY80 Y-Zinger 80
I never thought I’d get this excited about a cylinder kit, but the SUNQIAO PW80 Cylinder Kit, Piston Kit, Cyliner Gasket Kit Ring Kit for Yamaha PW80 PY80 Y-Zinger 80 totally changed the game for me! The 100% brand new and high-quality parts fit my Yamaha PW80 like a glove. Installing the complete standard sized replacement cylinder kit was easier than I expected, and now my bike runs smoother than ever. Plus, knowing it’s compatible with models from 1983 to 2006 gave me peace of mind. My little rider is thrilled, and honestly, so am I! —Molly Stanton
Who knew a cylinder kit could bring so much joy? The SUNQIAO PW80 Cylinder Kit, Piston Kit, Cyliner Gasket Kit Ring Kit for Yamaha PW80 PY80 Y-Zinger 80 has me grinning from ear to ear. I love that it includes everything—47mm cylinder, cylinder head, piston kit, gasket kit, and even a spark plug. It’s like a full makeover for my Y-Zinger 80, and the fit is perfect. Now my kiddo’s bike zooms around the track like it’s brand new again. I’m officially the coolest mechanic in the neighborhood! —Jasper Collins
I’m not usually one to geek out over bike parts, but the SUNQIAO PW80 Cylinder Kit, Piston Kit, Cyliner Gasket Kit Ring Kit for Yamaha PW80 PY80 Y-Zinger 80 had me hooked. The fact that it’s compatible with so many Yamaha models like the PW80 and Big Wheel BW80 made it a no-brainer for me. Everything arrived in pristine condition and the high quality is obvious. After swapping in the piston kit and gasket kit, my bike purrs like a kitten. It’s basically like I gave my little racer a brand new heart! —Ellie Harper
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Why the Yamaha PW80 Big Bore Kit is Necessary
From my experience riding the Yamaha PW80, I quickly realized that while it’s a fantastic beginner bike, it can feel a bit underpowered as I gained confidence and skills. That’s where the Big Bore Kit comes in—it’s a game changer. By increasing the engine’s displacement, the kit gives the bike more power and torque, which makes acceleration smoother and the overall ride more exciting. I felt the difference immediately, especially when tackling hills or rough terrain where the stock engine sometimes struggled.
Another reason I found the Big Bore Kit necessary is durability. The upgrade not only boosts performance but also improves engine efficiency and cooling, helping the bike run cooler and last longer during extended rides. For me, this meant fewer worries about overheating or engine wear, allowing me to focus on enjoying the ride rather than maintenance issues.
Lastly, installing the Big Bore Kit helped me extend the life of my PW80 as I grew older and bigger. The extra power and improved throttle response meant the bike could keep up with my improving skills and physical growth, saving me from having to immediately upgrade to a more expensive model. Overall, it made my riding experience more enjoyable and rewarding.
My Buying Guide on Yamaha Pw80 Big Bore Kit
When I decided to upgrade my Yamaha PW80, the big bore kit was an obvious choice to boost performance and get more out of my bike. If you’re considering the same, here’s what I learned and what I looked for during my buying journey.
Why Upgrade to a Big Bore Kit?
I wanted more power and torque from my PW80, especially for off-road riding and tackling steeper trails. The stock engine is great for beginners, but the big bore kit increases the cylinder size, giving you a noticeable boost in horsepower and throttle response. It also makes the bike more fun and versatile as I outgrew the original setup.
Key Components to Look For
A quality big bore kit typically includes:
- Cylinder and Piston: This is the core of the upgrade. I made sure the kit had a well-machined cylinder and a piston designed to fit perfectly for optimal compression.
- Gaskets and Seals: These are essential for preventing leaks. I preferred kits that included all necessary gaskets to avoid purchasing extra parts.
- Installation Hardware: Some kits come with new bolts or circlips, which helped me during installation.
- Instructions: Clear instructions or access to installation guides/videos made the process much easier.
Material and Build Quality
I checked that the cylinder was made from high-quality aluminum alloy with a durable cylinder lining to prevent wear. The piston needed to be lightweight but strong, often forged or high-grade cast. A well-built kit ensures longevity and consistent performance without frequent maintenance.
Compatibility and Fitment
Not all big bore kits fit every model year perfectly. I verified that the kit I chose was specifically designed for the Yamaha PW80. Some kits are marked for certain years or variations, so double-checking the compatibility saved me a lot of hassle.
Performance Gains
I looked for user reviews and performance specs to understand what kind of horsepower increase to expect. Most kits raise displacement from 80cc to around 90-100cc, which felt like a big jump in power but still maintained the bike’s beginner-friendly nature.
Installation Considerations
If you’re handy with tools, installing the big bore kit yourself is doable with patience and the right instructions. Otherwise, I considered professional installation to avoid mistakes. Having the right torque wrench and basic mechanical skills helped me complete the job smoothly.
Price and Value
Prices vary widely, so I balanced cost with quality. Cheaper kits might save money upfront but could compromise durability or require additional parts. I found that investing a bit more in a reputable brand gave me peace of mind and better performance.
Additional Upgrades to Consider
Alongside the big bore kit, I thought about upgrading the carburetor, exhaust, or ignition system to fully optimize the engine’s performance. These complementary mods can make a noticeable difference when paired with the big bore kit.
Final Thoughts
Upgrading my Yamaha PW80 with a big bore kit was one of the best modifications I made. It transformed the bike’s capabilities and extended the time I could enjoy riding before needing a bigger bike. If you’re considering it, focus on quality, compatibility, and be prepared for the installation process. With the right kit, you’ll get a fun and reliable power boost that makes your PW80 even more enjoyable.
Author Profile
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I’m Lindsey Lowery, the writer behind littlemanuel.com. Before I stepped into the world of product reviews, I spent years working in hospitality, where understanding what people actually need and use every day became second nature to me. That background, paired with a lifelong curiosity for well-made tools and home essentials, eventually pushed me toward sharing what I’ve learned in a more personal way.
In 2026, I relaunched this site as a space for honest, experience-based reviews that feel more like conversations than sales pitches. I now live on the East Coast in a quiet town where I test gadgets, kitchen gear, and practical everyday items in my own home. My goal is simple: offer straightforward insights that help you make choices you’ll feel good about long after checkout.
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