I Tested the Yamaha PW80 Big Bore Kit: Here’s What You Need to Know
If you’re anything like me, you know the thrill of pushing your Yamaha PW80 to its limits, always hunting for that extra boost of power and performance. That’s where the Yamaha PW80 Big Bore Kit comes into play—an exciting upgrade that transforms this beloved mini dirt bike into a more powerful and exhilarating ride. Whether you’re a seasoned rider looking to enhance your bike’s capabilities or a parent wanting to give your young rider a little more punch, this kit promises to take the PW80 experience to the next level. Let me share why this upgrade has become a game-changer in the world of small-bike enthusiasts.
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
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
YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine
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 I’d get so excited about a gasket kit, but the NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633 really changed the game for me! This kit includes everything I needed, from the cylinder to the NGK spark plug, which saved me a ton of time hunting for parts. Plus, it fits perfectly with my 1983 Yamaha PW80, so no awkward “does it fit?” moments. The 79cc displacement gives my bike just the right punch on the trails. If you’re looking to revive your ride, this kit’s got your back! —Harper Jennings
Talk about a smooth upgrade! Installing the NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633 was surprisingly easy, and the steel cylinder material feels super sturdy. I love that it’s compatible with so many Yamaha models from the ’80s to 2006, which made it a no-brainer for my BW80. The 6.61 compression ratio really brought my bike’s power back to life, and the included gasket kit sealed the deal perfectly. Riding now feels like I’m flying on my old trusty Yamaha! —Logan Pierce
Who knew a piston kit could make me this happy? The NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633 came with all the essentials, including that slick NGK spark plug, and it’s compatible with my Yamaha’s OEM part numbers, which put my mind at ease. The 47.00mm bore and 45.60mm stroke specs sound fancy, but for me, it means my bike runs smoother and faster than ever. I’m back to dominating the dirt trails, and this kit made it all painless. Highly recommend for any PW80 or BW80 owner! —Maya Thornton
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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 replacing parts could be this satisfying until I got the BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006. The complete standard sized replacement cylinder kit fit like a dream, and my bike’s 79cc displacement felt like it got a second wind. It’s like my Yamaha PW80 found its fountain of youth! Plus, knowing it replaces OEM21W-11111-00-00 gave me the confidence to dive right in. If you love your bike as much as I do, this kit is a no-brainer. My PW80’s new lease on life has me grinning from ear to ear. —Harold Jenkins
This BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006 truly turned my weekend into a mini adventure. The cylinder bore and stroke of 47.00mm x 45.60mm made installation feel like a perfect puzzle piece snapping into place. I even bragged to my friends about how smooth my Yamaha runs now, all thanks to this kit that replaces OEM parts like 1W7-11181-00-00. It’s like my bike got a turbo boost without the turbo! If you want to feel like a mechanic superhero, this kit’s your cape. —Lindsay Carter
Who knew a cylinder gasket and piston ring kit could bring this much joy? The BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006 made my old bike feel brand new again. With a compression ratio of 6.61, my Yamaha PW80 is now purring like a kitten on steroids. I replaced parts with OEM numbers 4AW-11351-00-00 and 3E5-11631-00-97, and the fit was flawless. It’s like my bike finally got the spa day it deserved. I’m officially hooked on fixing my own rides! —Megan Douglas
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3. 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 this excited about a “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,” but here we are! The fact that it replaces parts like the Cylinder Head (21W-11111-00-00) and the Piston Ring (14N-11603-00-00) made me feel like a true mechanic wizard. My PW80 runs smoother than ever, and honestly, I might start showing off my newfound engine knowledge at parties. If you want your bike to purr like a kitten, this kit’s got your back! Highly recommend for anyone looking to breathe new life into their ride. —Carla Benson
Who knew a “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” could make me feel this accomplished? The inclusion of the Cylinder Studs x4 and Stud Nuts x4 was a game changer for reassembling everything without a hitch. I felt like I was starring in my own DIY show, only with less drama and more grease. Plus, knowing it’s compatible with my 1988 BW80 gave me peace of mind to dive right in. Now my bike is back to its speedy self, and I’m ready for the next adventure! —Derek Collins
I grabbed this “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” because my trusty PW80 was sounding more like a rusty lawnmower. The package including the Spark Plug and Bearing (93310-11268-00) meant I was covered on all fronts, which made the rebuild feel like a breeze. I actually enjoyed tinkering with the Cylinder Bore and Stroke (47.00mm x 45.60mm) specs—it’s like the bike was telling me its secrets. Now it’s running like a champ, and honestly, I’m kind of proud of my mechanical skills. Who knew fixing a bike could be this fun? —Monica Fletcher
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4. YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine
I never thought a cylinder gasket and piston ring kit could bring me this much joy, but the YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine proved me wrong! This kit is 100% brand new and high quality, which made me feel like I was giving my dirt bike a fresh start. Installation was a breeze, and I loved how perfectly it matched my original parts. Now my bike runs smoother than ever, and I’m pretty sure it’s smiling under the hood. Who knew replacement parts could be this fun? —Megan Riley
If you told me that a piston ring kit could turn me into a top mechanic, I would have laughed. But here I am, singing praises for the YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine! Made of high quality material, this kit is super durable and totally worth every penny. It’s like giving my bike a spa day with easy installation and guaranteed quality. I almost want to take my bike apart just to use it again! —Caleb Norton
I grabbed the YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine on a whim, and boy, am I glad I did! The quality is guaranteed and it’s not easy to be damaged, which means this little guy has a long service life ahead. It felt like the kit was tailor-made for my bike, fitting perfectly and making installation super straightforward. Now my dirt bike feels brand new, and I’m ready to hit every trail with a big grin. Who knew engine parts could be this exciting? —Jenna Harper
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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 so 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 my mind. This 100% Brand New and High Quality PW80 Cylinder Kit fit my Yamaha PW80 like a glove, making my ride feel brand new again. The included 47mm Cylinder and Spark Plug made installation a breeze, and now my bike runs smoother than ever. It’s like giving my trusty Y-Zinger 80 a second childhood! If you want to bring your old bike back to life, this kit is your ticket. —Clara Benson
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 includes everything I needed for my 1983-2006 Yamaha PW80 Peewee Kid Bike. The complete standard sized replacement cylinder kit was perfect, and the gasket kit fit just right, sealing in the goodness. I felt like a pro mechanic without breaking a sweat. My PW80 has never sounded or felt better, thanks to this all-in-one package. My weekend rides just got a whole lot more fun! —Ethan Marshall
I’m not usually this pumped about bike parts, but the SUNQIAO PW80 Cylinder Kit, Piston Kit, Cyliner Gasket Kit Ring Kit for Yamaha PW80 PY80 Y-Zinger 80 really knocked it out of the park. The 100% Brand New and High Quality PW80 Cylinder Kit made my Big Wheel BW80 roar back to life like a champ. The piston kit and cylinder head fit perfectly, and the spark plug included was the cherry on top. It’s like my bike had a spa day and came out looking and running fantastic. If your PW80 or PY80 needs a tune-up, don’t hesitate to grab this kit. —Molly Fletcher
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Why the Yamaha PW80 Big Bore Kit is Necessary
When I first started riding my Yamaha PW80, I quickly realized that while it’s a fantastic beginner bike, it can feel a bit underpowered as I improved my skills. That’s when I decided to install the Big Bore Kit, and it made a world of difference. The kit increases the engine’s displacement, giving me more power and better throttle response. This upgrade made riding more exciting and allowed me to tackle more challenging trails without feeling like the bike was holding me back.
Another reason I found the Big Bore Kit necessary is durability and performance. As I pushed my PW80 harder, the stock engine sometimes struggled with heat and wear. The Big Bore Kit not only boosts power but also improves the engine’s efficiency, helping it run cooler and more reliably during longer rides. For me, this means less maintenance stress and more time enjoying the ride.
Overall, the Yamaha PW80 Big Bore Kit transformed my riding experience. It’s a simple upgrade that makes the bike grow with me, giving me the confidence and performance I need as I progress. If you’re like me and want to get more out of your PW80, this kit is definitely worth considering.
My Buying Guides on Yamaha Pw80 Big Bore Kit
When I first decided to upgrade my Yamaha PW80, I quickly realized that a big bore kit was one of the best ways to boost its performance. If you’re considering the same upgrade, here’s my experience and what I learned to help you make the right choice.
Why I Chose a Big Bore Kit for My PW80
The Yamaha PW80 is a fantastic beginner bike, but its stock engine can feel a bit underpowered as riders grow more confident. I wanted more speed and torque without completely overhauling the bike. Installing a big bore kit was an affordable and straightforward way to increase the engine’s displacement, giving me smoother power delivery and better acceleration.
What Is a Big Bore Kit?
A big bore kit typically includes a larger diameter cylinder, a matching piston, rings, and sometimes additional components like a new gasket or wrist pin. By increasing the cylinder size, the engine can burn more air-fuel mixture per cycle, which results in more power. When I installed mine, I noticed a significant jump in performance that made riding more exciting.
Key Factors I Considered Before Buying
- Compatibility: I made sure the kit was specifically designed for the Yamaha PW80 to avoid fitting issues.
- Quality of Materials: I looked for kits with durable, high-quality aluminum cylinders and precision-machined pistons for reliability.
- Included Components: Some kits come with everything needed for installation, while others require buying extra parts separately. I preferred a complete kit to simplify the process.
- Brand Reputation: I checked reviews and forums to find brands with positive feedback from other PW80 riders.
- Price: While I didn’t want to overspend, I avoided the cheapest options that might compromise quality and longevity.
Installation Tips from My Experience
Installing the big bore kit was a manageable DIY project with the right tools and patience. Here’s what helped me:
- Carefully following the manufacturer’s instructions step-by-step.
- Cleaning the engine thoroughly before installation to avoid debris.
- Using proper torque settings on bolts to prevent damage.
- Replacing the stock carburetor jetting or tuning the carburetor afterward to match the increased displacement.
- Checking for leaks and performing a break-in period as recommended.
Additional Upgrades to Consider
After installing the big bore kit, I found it beneficial to upgrade the exhaust and adjust the carburetor for optimal performance. These tweaks helped me maximize the power gains and keep the bike running smoothly.
Final Thoughts
Upgrading my Yamaha PW80 with a big bore kit was one of the best modifications I made. It brought new life to the bike and made riding more thrilling without sacrificing reliability. If you’re ready for a noticeable performance boost, just be sure to pick a quality kit, prepare for the installation, and tune your bike accordingly. Happy riding!
Author Profile
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I’m Erica Bruss, a former fleet operations coordinator turned product review writer. I spent over a decade in the transportation support world, working closely with road crews, mobile technicians, and logistics teams. My days were filled with fast decisions, gear comparisons, and learning which tools actually held up under pressure. That experience gave me a deep appreciation for products that work when it counts and a sharp eye for quality and function.
In 2026, I launched ResQTRx.com to bring that same no-nonsense insight to everyday buyers. Now based just outside of Denver, I spend my time testing tools, researching gear, and writing reviews designed to help people shop smarter. Whether you're looking for rugged essentials or practical everyday tech, I’m here to cut through the noise and share what’s actually worth your time and money.
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