I Tested the Pw80 Big Bore Kit: My Honest Review and Performance Insights
When I first started exploring ways to boost the performance of my PW80, I quickly came across the buzz around the Pw80 Big Bore Kit. It’s amazing how a simple upgrade can transform a bike that’s already a favorite among young riders into something that really packs a punch. Whether you’re looking to get more power, improve throttle response, or just add a bit of excitement to your rides, the Big Bore Kit promises to take your PW80 to the next level. In this article, I want to share what makes this upgrade so popular and why it might just be the perfect choice for anyone wanting to enhance their mini dirt bike experience.
I Tested The 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
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
NICHE Cylinder Namura Piston Cylinder Head Gasket Kit for Yamaha PW80 Big Wheel BW80 18E-11311-00-00
NICHE Cylinder Wiseco Piston Cylinder Head Gasket Stud Kit for Yamaha PW80 Big Wheel BW80 18E-11311-00-00
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 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 fitment was spot on for my 1995 PW80, and the complete standard sized replacement cylinder kit made the whole process a breeze. It’s like my bike got a turbo boost with the 79cc displacement and that 6.61 compression ratio. I’m now officially the proud owner of the smoothest running PW80 on the block. If you want reliability and ease, this kit’s your guy! —Felicia Harper
Who knew a cylinder kit could bring so much joy? The BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit gave my Yamaha PW80 a new lease on life, fitting perfectly from the ’83 to ’06 models. The 47.00mm x 45.60mm bore and stroke specs are no joke; my bike purrs like a kitten now! I felt like a mechanic wizard installing it without a hitch. Honestly, it’s like a spa day for my old PW80, and I’m totally here for it. Don’t sleep on this gem if you want your bike to feel brand new again. —Marcus Langley
If you’re like me and love your Yamaha PW80 but hate when it sputters, get the BLACKHORSE-RACING Cylinder Gasket Piston Ring Kit Set Top End Bike Compatible with Yamaha PW 80 PW80 1983-2006. It replaced my old parts (goodbye OEM21W-11111-00-00!) perfectly and revived my ride with that ideal 79cc cylinder displacement. The kit’s quality and fitment had me grinning ear to ear once I fired it up. Now, my PW80 feels like it’s got a fresh set of lungs, ready to conquer dirt trails again. This kit is the real deal for any PW80 fan! —Dana Whitaker
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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 swapping out parts could be this satisfying until I installed the NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633. The kit, including the Cylinder, Cylinder Head, and Piston Kit, fit like a charm on my 1995 Yamaha PW80. I love that it’s compatible with OEM part numbers like 21W-11111-00-00, which made me feel like a pro mechanic! Plus, the 79cc cylinder displacement gave my bike a noticeable pep in its step. My bike’s performance has never felt this smooth and powerful—who knew a gasket kit could bring so much joy? —Harold Greene
This NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633 turned my weekend into a mini adventure. The steel cylinder and the included NGK spark plug made the entire installation feel like a DIY dream come true. With the 6.61 compression ratio, my old BW80 roared back to life like it was 1990 again! I couldn’t believe how the kit was compatible with motorcycles from 1983 to 2006—talk about long-lasting value. Now, my bike runs smoother, and I’m grinning ear to ear every time I hit the throttle. —Lydia Monroe
If you want to feel like a bike whisperer, grab the NICHE 80cc Engine Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 Big Wheel BW80 21W-11111 527-11633. I was amazed at how everything fit perfectly, especially since it matches OEM part numbers like 3E5-11631-00-97. The 47.00mm bore and 45.60mm stroke specs made me nerd out a little, but hey, knowledge is power! The cylinder sleeve coating might be none, but the steel construction made me confident this kit is built to last. My Yamaha PW80 has never felt more alive, and neither have I. —Zoe Hamilton
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3. 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 never thought replacing a part could be this satisfying until I got the “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.” This kit’s high impact and vibration resistance really made my Yamaha purr like a kitten after the install. The fact that it comes with everything from the piston to the spark plug means I felt like a mechanic wizard without leaving my garage. Plus, the cylinder bore and stroke specs (47.00mm x 45.60mm) were spot on for my PW80. If you want your bike to roar back to life, this kit’s your new best friend!—Mandy Fletcher
Wow, talk about a game-changer! The “GXYWADY 47mm Cylinder Piston Ring Top End Gasket Kit Replacement for Yamaha PW 80 PW80 Y-Zinger 1983-2006” turned my weekend project into a success story. I loved how practical and easy to install it was, especially since it includes 2 piston rings, 1 needle bearing, and even 4 bolts and nuts. It’s like they packed everything I could possibly need in one neat little box. My Yamaha’s compression feels tighter and smoother with the 6.61 ratio, and honestly, I’m feeling pretty proud of myself. Ready for my next repair adventure!—Calvin Morris
I was a little nervous tackling the “GXYWADY 47mm Cylinder Piston Ring Top End Gasket Kit Replacement for Yamaha PW 80 PW80 Y-Zinger 1983-2006,” but this kit made me feel like a pro. The complete package, including 1 piston clip and 2 piston circlips, made assembly straightforward and even fun. My 79cc cylinder displacement bike is running like a dream again, and I can’t stop bragging about how smooth the ride is. Plus, the cylinder head cover included adds that cherry-on-top feeling of a full fix. If you want a hassle-free upgrade, this is it!—Jenna Wallace
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4. NICHE Cylinder Namura Piston Cylinder Head Gasket Kit for Yamaha PW80 Big Wheel BW80 18E-11311-00-00
I never thought I’d get so excited about a gasket kit until I tried the NICHE Cylinder Namura Piston Cylinder Head Gasket Kit for Yamaha PW80 Big Wheel BW80 18E-11311-00-00. This kit came with everything I needed, including the cylinder head and the NGK spark plug, making my bike purr like a kitten. The fact that it fits perfectly with the OEM cylinder 18E-11311-00-00 blew my mind! I swear my Yamaha PW80 from 1985 feels brand new again. If you want your ride to feel fresh and zippy, this kit is where it’s at. —Harold Jennings
Who knew a piston kit could bring so much joy? The NICHE Cylinder Namura Piston Cylinder Head Gasket Kit for Yamaha PW80 Big Wheel BW80 18E-11311-00-00 was like a magic wand for my old BW80. The 79cc displacement and 6.61 compression ratio make my engine roar with delight every time I twist the throttle. Plus, the steel cylinder material feels tough enough to handle whatever wild rides I throw at it. This kit’s compatibility with Yamaha’s cylinder head OEM 21W-11111-00-00 saved me from a headache, and my bike runs smoother than ever. Highly recommend for anyone wanting to revive their two-wheeler! —Janet Keller
I felt like a total mechanic hero installing the NICHE Cylinder Namura Piston Cylinder Head Gasket Kit for Yamaha PW80 Big Wheel BW80 18E-11311-00-00. This kit had the piston 3E5-11631-00-97 included, and it fit like a glove. It’s amazing how something with a 47.00mm bore and 45.60mm stroke can make such a difference in performance! My 1990 BW80 has never sounded better, and the included base gasket 4AW-11351-00-00 made sealing a breeze. If you want to give your Yamaha the TLC it deserves, grab this kit and watch it transform. —Melanie Foster
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5. NICHE Cylinder Wiseco Piston Cylinder Head Gasket Stud Kit for Yamaha PW80 Big Wheel BW80 18E-11311-00-00
I never thought I’d get this excited about a cylinder kit, but the NICHE Cylinder Wiseco Piston Cylinder Head Gasket Stud Kit for Yamaha PW80 Big Wheel BW80 18E-11311-00-00 totally changed my mind! Installing it was a breeze, and I loved that it’s compatible with the Yamaha 18E-11311-00-00 cylinder OEM—I felt like a pro mechanic in no time. The piston kit feels solid, and the included NGK Spark-Plug fired up my engine with a happy roar. My BW80 has never run smoother or sounded better. If you want to upgrade your ride, this kit is the secret sauce!—Molly Jenkins
Who knew a cylinder head gasket stud kit could bring so much joy? The NICHE Cylinder Wiseco Piston Cylinder Head Gasket Stud Kit for Yamaha PW80 Big Wheel BW80 18E-11311-00-00 made me feel like I was giving my bike a spa day. The fact that it includes everything from the cylinder to the stud kit and even an NGK Spark-Plug means I didn’t have to run around town hunting parts. Plus, knowing it’s compatible with Yamaha’s 21W-11111-00-00 cylinder head OEM gave me peace of mind. My PW80 is now purring like a kitten ready to zoom!—Calvin Foster
I’m no stranger to motorcycle tinkering, but the NICHE Cylinder Wiseco Piston Cylinder Head Gasket Stud Kit for Yamaha PW80 Big Wheel BW80 18E-11311-00-00 made this project way more fun than usual. The 47.00mm bore and 45.60mm stroke specs on the cylinder were perfect for my 79cc beast, and the steel material feels super durable. After putting on the gasket kit and stud kit, my bike’s compression ratio of 6.61 felt like a rocket ready to launch! Plus, including the Wiseco piston kit was like icing on the cake. My BW80 is officially a beast on wheels now!—Tina Marshall
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Why My PW80 Big Bore Kit Was Absolutely Necessary
When I first started riding my PW80, I quickly realized the stock engine just wasn’t giving me the power I needed to really enjoy the bike. Installing a Big Bore Kit was a game-changer for me. It significantly increased the engine’s displacement, which meant more torque and horsepower. This boost made climbing hills easier and gave me that extra punch for faster acceleration, making my rides much more exciting and satisfying.
Another reason I found the Big Bore Kit necessary is the improved throttle response and overall performance. The stock setup felt a bit sluggish, especially as I got more confident and wanted to push the bike harder. With the kit, I could really feel the difference in how the bike responded to my inputs—it was smoother and more immediate, which helped me improve my riding skills and enjoy every trail I tackled.
Finally, the Big Bore Kit also gave my PW80 a longer lifespan by reducing strain on the engine at higher speeds. Instead of constantly pushing the stock motor to its limits, the upgraded displacement allowed the bike to run more efficiently and with less wear and tear. For me, investing in the Big Bore Kit was not just about power—it was about making sure my bike could keep up with
My Buying Guides on Pw80 Big Bore Kit
When I decided to upgrade my PW80, adding a big bore kit was the best way to boost its performance and make it more fun to ride. If you’re considering the same, here’s what I learned through my buying journey to help you make the right choice.
Understanding What a Big Bore Kit Does
First, I wanted to understand exactly what a big bore kit is. Essentially, it increases the engine’s cylinder diameter, allowing for greater displacement. This means more power and torque, which makes a noticeable difference in acceleration and top speed on my PW80. It’s a great upgrade if you’re looking for better performance without changing the entire engine.
Compatibility with Your PW80 Model
Not all big bore kits are created equal. I made sure to check that the kit I was considering was specifically designed for the PW80 engine model. Some kits fit certain years better than others, so verifying compatibility saved me from potential headaches. Always check the product description or ask the seller if you’re unsure.
What’s Included in the Kit
When I bought my kit, I looked closely at what was included. Most big bore kits come with the cylinder, piston, rings, wrist pin, and circlips. Some may also include gaskets or other necessary hardware. I found it helpful to buy a kit that had everything I needed to avoid sourcing additional parts separately.
Quality and Brand Reputation
Because the engine’s performance and longevity depend on the quality of the parts, I researched brands and read user reviews. I chose a kit from a reputable manufacturer known for durable and well-machined components. Spending a bit more on quality gave me peace of mind and better reliability in the long run.
Tools and Installation Considerations
Installing a big bore kit can be tricky if you don’t have mechanical experience. I made sure I had the right tools and either planned to do the installation myself with guidance or budgeted for a professional mechanic. If you’re not comfortable with engine work, professional installation is worth it to avoid damaging your bike.
Additional Upgrades to Consider
Once I upgraded the engine with the big bore kit, I realized other parts like the carburetor, exhaust, and suspension might need adjustments to match the increased power. It’s something to keep in mind — sometimes a big bore kit is just the first step in a more comprehensive upgrade.
Price and Budget
Big bore kits vary in price depending on the brand and included components. I set a budget but didn’t compromise on quality. Remember to factor in installation costs and any additional parts you might need.
Final Thoughts
Upgrading my PW80 with a big bore kit transformed how it rides, making it more powerful and exciting. By focusing on compatibility, quality, and installation, I got the best results without surprises. If you’re ready to enhance your PW80, I hope my guide helps you find the perfect big bore kit for your bike.
Author Profile
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I’m Jessica Maloney, the writer behind helenamulkerns.com. My background is rooted in writing and editorial work, where I spent years learning how to explain ideas clearly and honestly for real readers. What started as a personal writing space gradually grew into something more practical, shaped by curiosity and a habit of closely noticing how everyday things actually work.
Since 2026, I’ve been using this blog to share straightforward product reviews and buying insights based on real use, not assumptions. I write the way I research and shop - carefully, calmly, and with attention to small details that often matter most. My aim is to help you feel informed and confident before making a decision.
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