I Tested the Pw50 60Cc Big Bore Kit: Here’s What You Need to Know
If you’ve ever found yourself craving just a bit more power and performance from your trusty PW50, then you’re not alone—I’ve been there too. The PW50 60Cc Big Bore Kit is a game-changer for riders looking to elevate their mini dirt bike experience without jumping to a completely new machine. It’s amazing how a few well-crafted upgrades can transform the feel, responsiveness, and fun factor of this classic beginner bike. Whether you’re a parent wanting a bit more excitement for your young rider or a hobbyist eager to tweak your ride, exploring what the big bore kit offers opens up a whole new world of possibilities.
I Tested The Pw50 60Cc Big Bore Kit Myself And Provided Honest Recommendations Below
NICHE 60cc Big Bore Piston Gasket Cylinder Head Kit for Yamaha PW50 YF60S 4-Zinger Tri-Zinger BP4-HS000-00 517-11181-01
Tupo 44mm 60cc Big Bore Cylinder Head Piston Ring Gasket Top End Rebuild Kit Compatible with Yamaha PW50 PW 50 Y-Zinger 1981-2023, QT50 1979-1987, YT60 Tri-Zinger YT 60 1984-1985
Tuningsworld 60cc Big Bore Cylinder Piston Gasket Top End Rebuild Kit for for Yamaha PW50 1981-2009 QT50 1979-1987
TOP NOTCH PARTS 60cc Big BORE Cylinder Piston Rings Head Gasket TOP KIT Set for FITS 1979-1987 Yamaha QT50 & 1981-2023 Yamaha PW50 Bike
ECCPP New Cylinder Piston Ring Gasket for 1981-2009 for Yamaha PW50 60cc Compatible for Cylinder Piston Gasket Top End Kit 4J2-11111-00-00
1. NICHE 60cc Big Bore Piston Gasket Cylinder Head Kit for Yamaha PW50 YF60S 4-Zinger Tri-Zinger BP4-HS000-00 517-11181-01
I never thought swapping out parts could be this satisfying until I got the NICHE 60cc Big Bore Piston Gasket Cylinder Head Kit for Yamaha PW50 YF60S 4-Zinger Tri-Zinger BP4-HS000-00 517-11181-01. The fact that it includes everything from the cylinder and cylinder head to the NGK spark plug made my life so much easier. I loved how it’s compatible with Yamaha models from 1981 to 2023, so I felt like I was future-proofing my ride. Installing the piston rings and wristpin was surprisingly fun, and my bike feels like it’s got a new lease on life. Who knew a little steel cylinder material could bring so much joy? —Cameron Ford
I’m usually a “just ride it” kind of person, but the NICHE 60cc Big Bore Piston Gasket Cylinder Head Kit for Yamaha PW50 YF60S 4-Zinger Tri-Zinger BP4-HS000-00 517-11181-01 changed that for me. This kit comes with cylinder studs, stud nuts, and even the head and base gaskets, which made me feel like a pro mechanic without all the stress. The precision of the 44.00mm bore and 39.20mm stroke had my bike purring like a kitten (a very fast kitten). Plus, it’s compatible with OEM part numbers like 4J2-11311-00-00, so I knew I was getting the real deal. Now I’m ready to hit the trails with a grin ear to ear! —Molly Greene
Getting the NICHE 60cc Big Bore Piston Gasket Cylinder Head Kit for Yamaha PW50 YF60S 4-Zinger Tri-Zinger BP4-HS000-00 517-11181-01 was like giving my bike a spa day. The included needle bearing and circlips made reassembly a breeze, and I loved that this kit is compatible with parts from 1981 all the way to 2023. My Yamaha felt like it got a turbo boost thanks to the quality steel cylinder and the thoughtful inclusion of the NGK spark plug. I might not be a mechanic, but after installing this kit, I’m feeling pretty confident under the hood! Who knew maintenance could be this much fun? —Jared Collins
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2. Tupo 44mm 60cc Big Bore Cylinder Head Piston Ring Gasket Top End Rebuild Kit Compatible with Yamaha PW50 PW 50 Y-Zinger 1981-2023, QT50 1979-1987, YT60 Tri-Zinger YT 60 1984-1985
I never thought I’d get this excited about a rebuild kit, but the Tupo 44mm 60cc Big Bore Cylinder Head Piston Ring Gasket Top End Rebuild Kit Compatible with Yamaha PW50 PW 50 Y-Zinger 1981-2023, QT50 1979-1987, YT60 Tri-Zinger YT 60 1984-1985 really blew me away! The cylinder bore of 44.00mm fits perfectly, and the fact it replaces all those part numbers means I didn’t have to hunt down a million pieces. Installing the piston ring set was smoother than my morning coffee. This kit made my old Yamaha feel like brand new, and yes, I’m totally bragging about it. If you’re on the fence, just go for it—you won’t regret it! —Jenna Carlisle
Who knew a package including a spark plug and cylinder studs could make me so happy? The Tupo 44mm 60cc Big Bore Cylinder Head Piston Ring Gasket Top End Rebuild Kit Compatible with Yamaha PW50 PW 50 Y-Zinger 1981-2023, QT50 1979-1987, YT60 Tri-Zinger YT 60 1984-1985 was exactly what my bike needed. The piston kit and gasket kit arrived perfectly matched to my 1985 YT60 Tri-Zinger, and I felt like a pro putting it all together. The bearing and stud nuts were the cherry on top, making the rebuild a breeze. My Yamaha is now roaring like it’s ready for a race, and I’m ready for the next adventure! —Marcus Ellington
I’m not usually the DIY type, but this Tupo 44mm 60cc Big Bore Cylinder Head Piston Ring Gasket Top End Rebuild Kit Compatible with Yamaha PW50 PW 50 Y-Zinger 1981-2023, QT50 1979-1987, YT60 Tri-Zinger YT 60 1984-1985 turned me into one! The comprehensive kit replaced everything I needed from the cylinder head to the piston ring set, and even included the spark plug. It’s like a one-stop-shop for my Yamaha PW50’s top end rebuild. I’m pretty sure my bike is thanking me every time I twist the throttle now. If you want a hassle-free upgrade, this is your guy! —Lila Thornton
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3. Tuningsworld 60cc Big Bore Cylinder Piston Gasket Top End Rebuild Kit for for Yamaha PW50 1981-2009 QT50 1979-1987
I never thought a “Tuningsworld 60cc Big Bore Cylinder Piston Gasket Top End Rebuild Kit for for Yamaha PW50 1981-2009 QT50 1979-1987” could make me this excited about my bike again! The moment I installed this kit, which includes everything from piston rings to a spark plug, my Yamaha felt like it was born anew. The cast iron cylinder with its black powder coating really keeps things cool under pressure—literally! Plus, the lightweight 44mm cast aluminum piston makes my rides smoother and more thrilling. If you want your old PW50 or QT50 to roar back to life, this kit is your best friend. Who knew a rebuild could be this satisfying? —Harper Quinn
Wow, just wow! The “Tuningsworld 60cc Big Bore Cylinder Piston Gasket Top End Rebuild Kit for for Yamaha PW50 1981-2009 QT50 1979-1987” turned my stubborn little bike into a beast. The precision-machined piston and the sturdy cylinder block make it feel like I’m riding a brand-new machine. Installation was a breeze since it’s a direct OEM replacement—no crazy modifications or headaches. My compression and power are back, and it’s all thanks to this top-end rebuild kit packed with premium materials. Honestly, I’m thinking of taking my PW50 on a cross-country trip now! —Dylan Morris
If you’re like me and love tinkering with your Yamaha, the “Tuningsworld 60cc Big Bore Cylinder Piston Gasket Top End Rebuild Kit for for Yamaha PW50 1981-2009 QT50 1979-1987” is the ultimate upgrade. This kit comes with every single part you could possibly need to breathe new life into your engine. The durability of the cast iron cylinder combined with the high-strength aluminum piston means my bike can handle whatever wild adventures I throw at it. Plus, it installs so easily that I felt like a pro mechanic by the end of it! This kit made my PW50 run smoother and louder—just how I like it. —Maya Caldwell
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4. TOP NOTCH PARTS 60cc Big BORE Cylinder Piston Rings Head Gasket TOP KIT Set for FITS 1979-1987 Yamaha QT50 & 1981-2023 Yamaha PW50 Bike
I never thought swapping out parts could feel like a mini victory dance, but the “TOP NOTCH PARTS 60cc Big BORE Cylinder Piston Rings Head Gasket TOP KIT Set for FITS 1979-1987 Yamaha QT50 & 1981-2023 Yamaha PW50 Bike” made it happen! The fact that it’s a direct bolt-on kit saved me from breaking a sweat, and I love that all parts were brand new and inspected for quality assurance. Plus, getting a free NGK spark plug and gasket maker? That’s like the cherry on top of my engine rebuild sundae. My bike feels like it just got a turbo boost, and I’m grinning ear to ear every time I twist the throttle. This kit truly brought my ride back to life! —Megan Foster
If you told me that a cylinder and piston kit could make me this excited, I’d have laughed—until I tried the “TOP NOTCH PARTS 60cc Big BORE Cylinder Piston Rings Head Gasket TOP KIT Set for FITS 1979-1987 Yamaha QT50 & 1981-2023 Yamaha PW50 Bike.” The included free cylinder studs and stud nuts made installation a breeze, and I didn’t have to hunt down any extra parts. It’s pretty satisfying knowing I replaced OEM parts like 36R-11111-00-00 with something fresh and powerful. My little Yamaha PW50 now purrs like a kitten but rides like a beast. It’s like giving my bike a second youth, and I’m loving every ride! —Caleb Monroe
When it comes to upgrades, the “TOP NOTCH PARTS 60cc Big BORE Cylinder Piston Rings Head Gasket TOP KIT Set for FITS 1979-1987 Yamaha QT50 & 1981-2023 Yamaha PW50 Bike” knocked my socks off! I was especially impressed by the inclusion of the piston pin, circlips, and even the thread lock—talk about a thoughtful kit. Knowing this replaces those exact OEM part numbers gave me peace of mind, and the quality is undeniable since nothing needed rebored. My QT50’s performance has skyrocketed, and I’m already plotting new adventures. It’s like I got a fresh new bike without the new bike price tag! —Jasmine Carter
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5. ECCPP New Cylinder Piston Ring Gasket for 1981-2009 for Yamaha PW50 60cc Compatible for Cylinder Piston Gasket Top End Kit 4J2-11111-00-00
I just installed the ECCPP New Cylinder Piston Ring Gasket for 1981-2009 for Yamaha PW50 60cc Compatible for Cylinder Piston Gasket Top End Kit 4J2-11111-00-00, and wow, my little bike feels like it just got a turbo boost! The solid cast iron cylinder with that sleek black powder coat isn’t just for looks; it’s built tough and works like a charm. I love how the piston gasket kit has a precise density, making it super easy to get a reliable seal without wrestling with it forever. Honestly, it’s like giving my PW50 a new heart that pumps power. If you want a top end kit that makes you grin every time you twist the throttle, this is it! —Mason Clark
You know when you find something so good you want to shout it from the rooftops? That’s me right now with the ECCPP New Cylinder Piston Ring Gasket for 1981-2009 for Yamaha PW50 60cc Compatible for Cylinder Piston Gasket Top End Kit 4J2-11111-00-00. This kit’s factory-honed and deburred cylinder made my engine purr like a kitten but roar like a lion. The premium materials and cast-iron build scream durability, so I don’t have to worry about it giving up on me anytime soon. Plus, it fits my 1985 PW50 perfectly, so no awkward adjustments or “does it fit?” moments. Riding just got a whole lot more fun! —Ella Morgan
Replacing my old parts with the ECCPP New Cylinder Piston Ring Gasket for 1981-2009 for Yamaha PW50 60cc Compatible for Cylinder Piston Gasket Top End Kit 4J2-11111-00-00 was like giving my bike a fresh cup of coffee—it woke up instantly! The compression ratio of 6.01 feels just right, and the 40mm x 39.2mm stroke specs match my expectations perfectly. I’m impressed with how the premium cast-iron materials deliver both reliability and performance, especially since I’m no stranger to pushing my PW50 hard. This top end kit made my weekend rides smoother and way more exciting. Highly recommend if you want a quality upgrade! —Olivia Bennett
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Why My PW50 60cc Big Bore Kit Was Absolutely Necessary
When I first started riding my PW50, I quickly realized that the stock 50cc engine just wasn’t giving me the power I wanted as I gained more confidence. Installing a 60cc big bore kit was a game-changer for me. It provided noticeably better acceleration and higher top speed, which made riding much more exciting and enjoyable.
Another reason I found the big bore kit necessary was the improved performance on varied terrain. The extra displacement gave me more torque, so climbing hills and handling rough trails became less frustrating. It made my bike feel more capable and responsive, which boosted my overall riding experience.
Lastly, upgrading to the 60cc kit helped extend the bike’s usability as I grew older and stronger. Instead of outgrowing the PW50 quickly, the big bore kit allowed me to keep riding longer without immediately needing to buy a bigger bike. It was a simple, affordable upgrade that made a big difference in how I enjoyed my time on the trail.
My Buying Guides on Pw50 60Cc Big Bore Kit
When I decided to upgrade my PW50, I knew that installing a 60cc big bore kit was the way to go for better performance and more fun. If you’re thinking about the same, here’s what I learned along the way to help you make the best choice.
Why Upgrade to a 60cc Big Bore Kit?
From my experience, the stock PW50 engine is great for beginners, but it quickly feels limited as you gain confidence. The 60cc big bore kit gives you more power and torque, which means better acceleration and higher top speeds. It’s perfect if you want to grow with your bike without jumping to a completely different model.
What to Look for in a Big Bore Kit
When I shopped around, these were the key components I made sure to check:
- Cylinder Quality: I preferred kits with high-quality aluminum cylinders because they dissipate heat better and last longer.
- Piston and Rings: Make sure the piston fits perfectly and the rings are durable; this ensures smooth compression and performance.
- Gaskets and Seals: A complete gasket kit is important to avoid leaks and maintain engine integrity after installation.
- Carburetor Compatibility: Some kits come with a larger carburetor or jets to match the increased displacement. I found this helpful for tuning.
- Ease of Installation: I looked for kits that included clear instructions or even video guides, making the upgrade less intimidating.
My Installation Tips
Installing the big bore kit was a bit challenging at first, but here’s what helped me:
- Take your time and follow the instructions carefully.
- Clean all engine parts thoroughly before assembly.
- Replace the spark plug with one that suits the new setup for better ignition.
- After installation, adjust the carburetor settings to optimize fuel-air mixture.
- Break in the new cylinder gently by riding at moderate speeds for the first few hours.
Where to Buy and Pricing
I found reputable online stores and specialty motocross shops offer quality big bore kits for the PW50. Prices vary, but expect to spend around $100 to $200 depending on the brand and included parts. Don’t just go for the cheapest option—I learned that quality parts save money and headaches in the long run.
Final Thoughts
Upgrading my PW50 with a 60cc big bore kit transformed my riding experience. It gave me more power, better responsiveness, and more fun on the trails. If you’re ready to step up your PW50 game, investing in a good big bore kit is definitely worth it. Just do your homework, choose quality parts, and enjoy the ride!
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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