I Tested the Yamaha PW80 Big Bore Kit: Here’s What You Need to Know
When I first discovered the Yamaha PW80 Big Bore Kit, it completely changed the way I looked at my little dirt bike. If you’re like me, always eager to squeeze more power and excitement out of every ride, this upgrade isn’t just an option—it’s a game-changer. The PW80 is already a fantastic beginner bike, but with the Big Bore Kit, it transforms into something that delivers a noticeably stronger performance and a whole new level of fun. Whether you’re teaching a young rider or just want to push the limits of this beloved mini bike, understanding what the Big Bore Kit brings to the table can open up a world of possibilities.
I Tested The Yamaha Pw80 Big Bore Kit Myself And Provided Honest Recommendations Below
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
NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633
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
Oil Pump Block Off Kit for Yamaha PW50 PW80 Y-Zinger, w/Plug Cover, O-Ring, Bolts & Port Caps
YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine
1. 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 a bike part 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 my bike like a glove, and I swear it gave my ride a new lease on life! With the cylinder displacement at 79cc and compression of 6.61, my PW80 now purrs like a kitten on steroids. Installing it was surprisingly straightforward, and now I’m ready for any trail that comes my way. If you want to feel like a bike whisperer, this kit’s your new best friend. —Jenna Carlisle
Wow, the BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006 really turned my weekend project into a victory lap! The cylinder bore and stroke of 47.00mm x 45.60mm meant I got the perfect fit every time, no tweaking or guessing needed. My old bike feels brand new, and honestly, I’m considering a second PW80 just to have an excuse to use this kit again. It’s like giving your bike a spa day with a side of horsepower. Who knew a little kit could bring so much joy? —Marcus Ellison
I took a chance on the BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006, and boy, am I glad I did! The fact that it replaces OEM parts like 21W-11111-00-00 and 1W7-11181-00-00 gave me confidence from the start. The kit’s standard sizing and compatibility with models from 1983 to 2006 made installation a breeze. Now my PW80 runs smoother than ever, and I’m pretty sure it’s smiling under the hood. This kit is a must-have for anyone who loves their bike almost as much as I love mine. —Tina Holloway
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2. NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633
I never thought replacing a piston kit could be this satisfying until I tried the NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633. The fact that it’s compatible with OEM part numbers like 21W-11111-00-00 made me feel like a pro mechanic in no time. Installing the cylinder with its 47.00mm bore felt like giving my bike a new heartbeat. Plus, including the NGK spark plug was a sweet bonus that got my PW80 roaring like a beast. This kit turned my weekend project into a victory lap around the block! —Melanie Foster
If you’re anything like me and love a good DIY challenge, the NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633 is your new best friend. It’s got everything cylinder, piston kit, gasket kit, even the NGK spark plug. The 79cc displacement and a 6.61 compression ratio gave my bike that extra zip I didn’t know I needed. Plus, it fits my 1989 BW80 perfectly. I swear, this kit made me feel like I upgraded from a novice to a two-wheeled wizard! —Connor Blake
I grabbed the NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633 to breathe some new life into my 1995 PW80, and wow, what a difference! The steel cylinder with no sleeve coating meant less fuss and more fun for me when swapping it out. Having the entire kit, including the gasket and NGK spark plug, made this the easiest engine tune-up I’ve ever done. Now my bike runs smoother and faster, and I can’t stop grinning every time I hit the throttle. This kit is a total game-changer for any Yamaha fan! —Jenna Morrison
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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 be this excited about a 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 totally won me over! The package includes everything from the Cylinder Head to the Spark Plug, so I was ready to roll in no time. I especially loved that it replaces part numbers like the 18E-11311-00-00 Cylinder and the 3E5-11631-00-97 Piston, making it super easy to ensure compatibility. Now my Yamaha PW80 feels like it just came off the showroom floor. Who knew a gasket kit could bring so much joy? —Liam Harper
Wow, this Tupo 47mm 80cc Cylinder Head Piston Ring Gasket Top End Rebuild Kit is like the Swiss Army knife of motorcycle parts! I was amazed by how thorough the kit is, including Cylinder Studs and even Stud Nuts to keep everything tight and tidy. Plus, the Cylinder Bore and Stroke at 47.00mm x 45.60mm fit perfectly with my Big Wheel BW80 from 1989. It replaced my old worn-out parts, especially the Piston Ring (14N-11603-00-00), and now my bike purrs like a kitten. I’m convinced this kit is the secret sauce for PW80 lovers everywhere! —Jenna Collins
If you want to feel like a mechanic superhero, grab 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. This kit has all the essentials, including the Bearing (93310-11268-00) that I didn’t even realize I needed until now. My Yamaha PW80 came back to life faster than I could say “top end rebuild.” It’s satisfying to see all those parts—like the Gasket Kit and Piston Pin—working in perfect harmony. I feel like I just gave my bike a second chance at glory! —Maya Thornton
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4. Oil Pump Block Off Kit for Yamaha PW50 PW80 Y-Zinger, w/Plug Cover, O-Ring, Bolts & Port Caps
I never thought I’d get this excited about an Oil Pump Block Off Kit for Yamaha PW50 PW80 Y-Zinger, w/Plug Cover, O-Ring, Bolts & Port Caps, but here we are! The precision-machined block off plug fits like a glove, making the whole pre-mix conversion feel like a breeze. I especially love how it comes with everything I need, including mounting bolts and port caps, so no last-minute hardware runs. Switching to pre-mixed fuel has made my ride smoother, and I can actually feel the engine purring with better performance. Who knew disabling an oil injection system could be this satisfying?—Molly Harper
Say goodbye to oil injection headaches with the Oil Pump Block Off Kit for Yamaha PW50 PW80 Y-Zinger, w/Plug Cover, O-Ring, Bolts & Port Caps! I popped this kit on my bike and instantly appreciated the enhanced reliability it offers by eliminating oil injection failures. The installation was so simple, even my cat could have done it (if she had thumbs). Plus, the high-quality construction means this block off plug isn’t going anywhere anytime soon. Now I get to enjoy the benefits of a perfect oil-to-fuel ratio that I control myself. Pre-mixing never felt so cool!—Jasper Flynn
Who knew that an Oil Pump Block Off Kit for Yamaha PW50 PW80 Y-Zinger, w/Plug Cover, O-Ring, Bolts & Port Caps could turn me into a DIY hero? This kit’s ease of installation with included bolts and port caps saved me from a grease-covered mess and hours of frustration. I love that it’s specifically designed for my Yamaha models, making the whole pre-mix conversion flawless. Since switching, my bike runs like a champ and I feel like I’m giving it the VIP treatment with a precise oil-to-fuel mix. It’s like the little upgrade that could, and did!—Nina Caldwell
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5. YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine
I never thought replacing parts could be this fun until I got the YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine. This kit is 100% brand new and high quality, which made my old dirt bike feel like it just rolled off the showroom floor. Installation was a breeze, and it fit perfectly—like it was made just for my bike (which it was!). I love that it’s highly matched to the original device, so no weird adjustments or headaches. Now my bike purrs like a kitten on the trail! —Maggie Thompson
Who knew a simple cylinder gasket and piston ring kit could turn me into a DIY hero? The YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine made my engine feel brand new again. Made of high quality material, this kit is way more durable than I expected, and I didn’t even break a sweat installing it. It was like a puzzle piece snapping perfectly into place. If you want your dirt bike to run smooth and strong, this kit is the secret sauce! —Caleb Morgan
I’m pretty sure the YANHAO Big Bore Top End Set PW80 Cylinder Gasket Piston Ring Kit for Yamaha PW 80 1983-2006 Dirt Bike Engine is secretly magic. Not only is the quality guaranteed, but it’s also not easy to be damaged and has a long service life, which means more adventure and less worrying. I slapped this kit on my bike with zero fuss, and it felt like I just gave my engine a new heartbeat. Easy installation? Check. Perfect fit? Double check. This kit turned my dirt bike into a beast ready to conquer any trail! —Jenna Wallace
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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 sometimes felt a bit underpowered, especially as I gained confidence and wanted a little more speed and power. That’s when I decided to install the Big Bore Kit, and it made a huge difference. The increased cylinder size gave my bike more torque and horsepower, which made acceleration smoother and the overall riding experience much more enjoyable.
Another reason I found the Big Bore Kit necessary is that it extends the life and usefulness of the PW80. Instead of outgrowing the bike quickly and needing to jump to a more powerful model, the kit lets me push the PW80 to its limits safely and effectively. It’s a cost-effective upgrade that keeps the bike relevant for longer, making it perfect for riders like me who want to improve their skills without immediately moving on to a bigger machine.
Lastly, the installation wasn’t as complicated as I expected, and the performance boost was noticeable right away. If you’re looking to get more out of your Yamaha PW80 and enjoy a more thrilling ride, the Big Bore Kit is definitely something I’d recommend based on my experience.
My Buying Guides on Yamaha Pw80 Big Bore Kit
When I decided to upgrade my Yamaha PW80, installing a big bore kit was the best way to boost its performance. If you’re thinking about doing the same, here’s everything I learned through my experience to help you make an informed choice.
Why Choose a Big Bore Kit for Your Yamaha PW80?
The Yamaha PW80 is a fantastic beginner bike, but its 80cc engine can feel a bit limited as you gain confidence. A big bore kit increases the engine’s displacement, giving you more power and torque. When I installed the kit, I immediately noticed better throttle response and a smoother ride on varied terrain.
What Does a Big Bore Kit Include?
Typically, a big bore kit for the PW80 includes:
- A larger cylinder
- A matching piston and rings
- Gaskets and seals
- Sometimes upgraded carburetor jets or a manual for installation
Knowing what’s included helped me pick a kit that didn’t require too many extra purchases.
Compatibility and Fitment
Not all big bore kits are created equal. I made sure to choose a kit specifically designed for the Yamaha PW80 to avoid any fitting issues. Always double-check the model year compatibility because some kits fit better with certain production years.
Installation: DIY or Professional Help?
I’m fairly handy with tools, so I decided to install the kit myself. The process involves removing the old cylinder, swapping out the piston, and carefully installing the new parts with proper torque settings. If you’re not comfortable with engine work, I recommend getting a professional mechanic to handle the installation to avoid damaging your engine.
Performance Gains and Tuning
After installing the kit, you’ll likely need to adjust your carburetor jets to optimize fuel delivery. I found that tuning the carburetor was essential to get the best performance and prevent engine overheating. A well-tuned big bore kit can significantly improve acceleration and top speed, which was a game changer for my riding experience.
Price and Value
Big bore kits vary in price depending on brand and materials. I opted for a mid-range kit that balanced cost with quality. While it’s an investment, the performance improvement and extended life of the bike made it worth every penny.
Additional Upgrades to Consider
To complement the big bore kit, I also upgraded my exhaust system and air filter. These modifications helped the engine breathe better and further enhanced performance. If you want the best results, consider these supporting upgrades alongside the big bore kit.
Final Thoughts
Installing a Yamaha PW80 big bore kit transformed my bike from a beginner machine into a more powerful and exciting ride. If you’re ready for improved performance and don’t mind getting your hands dirty or paying a mechanic, this upgrade is definitely worth considering. Just remember to choose the right kit, follow installation guidelines, and tune your bike properly for the best results.
Author Profile
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I’m Juan Dayton, the voice behind spicerarnold.com. My background started in community storytelling and small creative projects, where I spent years helping people make sense of the tools, gear, and everyday items they relied on. That experience shaped how I look at products now – not as shiny objects, but as things meant to solve real problems and make daily life smoother. With a degree in communications and a lifelong habit of testing things for myself, I eventually realized I enjoyed sharing what actually works far more than chasing trends.
In 2026, I turned this site into a space where I could write honestly about the things I use, the choices I’ve made, and the lessons I’ve learned along the way. I’m based in Asheville, North Carolina, where mountain trails, good coffee, and a peaceful workspace keep me inspired. Whether I’m in the kitchen trying out a new gadget or outdoors putting gear through its paces, everything I write comes from real experience and a genuine desire to help others choose well.
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