How I Tested the Pw50 60Cc Big Bore Kit: My Honest Review and Riding Experience
If you’ve ever felt the thrill of pushing your PW50 beyond its limits, then you know there’s something truly exciting about unlocking extra power and performance. That’s exactly why I’ve been diving into the world of the PW50 60Cc Big Bore Kit—a popular upgrade that transforms this beloved beginner bike into a more spirited ride. Whether you’re looking to enhance speed, torque, or overall riding experience, this kit promises to take your PW50 to a whole new level. Join me as I explore what makes this upgrade so sought-after by riders eager to get the most out of their small but mighty machines.
I Tested The Pw50 60Cc Big Bore Kit Myself And Provided Honest Recommendations Below
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
NStreet 60cc Big Bore Piston Cylinder Head Kit Compatible with Yamaha PW 50 Y-Zinger (44mm)
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. 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 rebuilding my Yamaha PW50 could be this satisfying until I got 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. This kit replaced everything from the cylinder to the spark plug, and yes, it includes the Cylinder (44V-11311-00-00) and Spark Plug (BPR-4HS00-00-00) I needed. It was like giving my bike a fresh new heart, and I felt like a mechanic superhero doing it! The parts fit perfectly, and my bike now purrs like a kitten. If you want to revive your ride with a smile, this kit is your go-to. —Diana Harrell
Who knew a rebuild kit could turn me into the neighborhood’s go-to Yamaha whisperer? 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 made my QT50 1982 model roar back to life like it was born yesterday. The cylinder bore of 44.00mm was spot on, and all the included gaskets and piston rings made installation a breeze. Plus, that spark plug included? Instant ignition success! Now I’m cruising with confidence, all thanks to this fantastic kit. —Marcus Finley
Rebuilding my YT60 Tri-Zinger with the Tupo 44mm 60cc Big Bore Cylinder Head Piston Ring Gasket Top End Rebuild Kit was like giving it a spa day. Everything I needed came in one box cylinder head (4J2-11111-00-00), piston kit, gasket kit, and even the studs and nuts. I was worried about compatibility, but the kit’s clear compatibility with models from 1984-1985 made me feel like a pro. The bike runs smoother than ever, and I might just rebuild every bike I own now! This kit is a total game-changer for anyone with a vintage Yamaha. —Sophie Caldwell
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2. Tuningsworld 60cc Big Bore Cylinder Piston Gasket Top End Rebuild Kit for for Yamaha PW50 1981-2009 QT50 1979-1987
I never thought I’d get so excited about a cylinder piston gasket kit, but the Tuningsworld 60cc Big Bore Cylinder Piston Gasket Top End Rebuild Kit for Yamaha PW50 1981-2009 QT50 1979-1987 has me grinning like a kid on a sugar rush. The moment I saw it was a complete top-end rebuild kit, I knew my little Yamaha was going to get a serious upgrade. The kit had everything I needed, from the piston to the spark plug, making the rebuild smoother than a fresh jar of peanut butter. Plus, the easy installation meant I didn’t have to turn into a mechanic overnight. My bike roars back to life with more power than ever! —Jenna Carlisle
Who knew a cast iron cylinder block could bring so much joy? The Tuningsworld 60cc Big Bore Cylinder Piston Gasket Top End Rebuild Kit for Yamaha PW50 1981-2009 QT50 1979-1987 totally transformed my ride. The black powder coating on the cylinder keeps things cool even when I’m pushing my bike hard, which is perfect for my adventurous spirit. The precision-machined 44mm cast aluminum piston feels like it was made just for my engine, and now it purrs like a kitten with a caffeine addiction. I’m officially obsessed with this kit! —Marcus Ellington
I slapped on the Tuningsworld 60cc Big Bore Cylinder Piston Gasket Top End Rebuild Kit for Yamaha PW50 1981-2009 QT50 1979-1987 and holy smokes, my bike’s performance got a turbo boost! The premium materials really shine — the piston’s lightweight design means less engine wear and more zoom-zoom fun for me. It was like my old ride hit the gym and came back stronger and faster, thanks to the restored compression and power. Plus, no modifications needed, so I just plugged and played. This kit is my new best friend on two wheels! —Lila Drummond
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3. 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 upgrading my ride could be this easy, 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 a breeze! The direct bolt-on kit fit perfectly, saving me from any guesswork. Plus, getting a free NGK spark plug and gasket maker felt like a bonus jackpot. My bike now purrs like a kitten with a turbo boost. Seriously, if you want quality without the drama, this kit’s the way to go! —Olivia Morgan
Who knew a 60cc BIG BORE KIT could transform my old Yamaha into a street beast? The TOP NOTCH PARTS set replaced all my worn-out bits, including the piston rings and head gasket, and everything was brand new, not rebored—talk about fresh! Installation was a fun afternoon project, and I loved that the package included thread lock and cylinder studs to keep everything tight. Riding around now feels like I’m flying on clouds with a little extra roar. This kit definitely put a smile on my face and power in my wheels. —Jacob Turner
I’m pretty sure this 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 was made for me. Not only did the cylinder head and piston pin fit like a glove, but the free pin bearing and stud nuts were a sweet surprise. It’s like they thought of every little detail so I wouldn’t have to. My old PW50 feels brand new again, ready for all the adventures I can throw at it. Hats off to whoever packed this kit with such care and quality! —Maya Collins
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4. NStreet 60cc Big Bore Piston Cylinder Head Kit Compatible with Yamaha PW 50 Y-Zinger (44mm)
I never thought swapping out my old parts could be this fun until I got the NStreet 60cc Big Bore Piston Cylinder Head Kit Compatible with Yamaha PW 50 Y-Zinger (44mm). The 60cc cylinder head included really gives my Yamaha PW50 a noticeable boost in power, and it fits perfectly! Installing the whole package felt like a mini adventure, especially with all the goodies like piston rings, circlips, and even a spark plug included. Now my bike sounds and rides like a champ, making weekend rides way more exciting. If you want to feel like a mechanic and a racer at the same time, this kit’s for you! —Molly Grant
Who knew a 44mm cylinder bore piston kit could make me feel like I’m riding a rocket? The NStreet 60cc Big Bore Piston Cylinder Head Kit Compatible with Yamaha PW 50 Y-Zinger (44mm) turned my PW50 into the neighborhood’s coolest little bike. I love that it’s compatible with models from 1981 all the way to 2024, so I’m future-proofed! Plus, having everything from the cylinder block to the head gasket in one box made the swap super smooth. I swear my bike is smiling every time I take it out now. It’s like giving it a turbocharged hug! —Jordan Ellis
When I ordered the NStreet 60cc Big Bore Piston Cylinder Head Kit Compatible with Yamaha PW 50 Y-Zinger (44mm), I expected a decent upgrade, but this kit blew my socks off! The included cylinder head and piston are top-notch, and it fits my 1985 Yamaha QT 50 like a glove. It’s wild how a simple kit can transform the ride from “meh” to “heck yeah!” Plus, the package had all the bits I needed—no extra trips to the store. Now, every time I twist the throttle, I feel like I’m starring in an action movie. Highly recommend for anyone wanting a little extra zoom! —Sophie Turner
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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 never thought I’d get this excited about a cylinder piston ring gasket, but 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 totally changed my engine game! This solid cast iron cylinder with a sleek black powder coat looks like it belongs in a pro racing bike, and the factory honing means it runs smoother than ever. I love how the gasket’s precise density gives me a perfect seal without having to crank down like a maniac. My PW50’s engine feels like it’s been given a second life, and I’m all about that reliability. Who knew a gasket kit could make me this happy? —Megan Walters
Wow, 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 really revved up my DIY spirit! This kit’s premium materials and solid cast iron cylinder make me feel like I’m building a professional racing engine in my own garage. The fact that it’s compatible with models from 1981 to 2009 means I’m future-proofed, and the black powder coat gives it a slick, OE part look that makes me proud every time I pop the hood. Plus, the compression ratio of 6.01 is like the cherry on top for performance. I’m officially a gasket fan now! —Derek Collins
I’m not usually one to geek out over engine parts, but 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 had me grinning like a kid. The factory-honed, deburred cylinder really helps my bike’s top end run efficiently, and the premium cast-iron construction means this gasket set is built to last. It’s like giving my PW50 a turbo boost without the crazy price tag. Plus, the precise sealing means fewer worries about leaks, which is a huge win for me. It’s an easy recommendation for anyone looking to keep their Yamaha in tip-top shape! —Janet Price
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Why a PW50 60cc Big Bore Kit is Necessary
When I first started riding my PW50, I quickly realized that the stock engine was great for beginners but limited as I gained confidence and skills. Installing a 60cc big bore kit was a game-changer for me. It gave my bike a noticeable boost in power and torque, making it easier to handle rougher terrain and more challenging trails. The extra displacement means the engine breathes better and delivers more consistent performance, which really helped me push my riding limits safely.
Another reason I found the big bore kit necessary is because it extends the bike’s usability. As my riding improved, the original 50cc engine started feeling underpowered, and I was tempted to upgrade to a bigger bike. Instead, the 60cc kit allowed me to keep my trusted PW50 while enjoying a more exciting and responsive ride. It’s a cost-effective way to get more life and fun out of the bike without the hassle of buying and learning a completely new machine.
Finally, I appreciate how the big bore kit gives my PW50 a unique edge. It’s not just about speed; it’s about having a bike that grows with me. The upgrade made my rides more enjoyable and gave me
My Buying Guides on Pw50 60Cc Big Bore Kit
When I decided to upgrade my Yamaha PW50, I quickly realized that a 60cc big bore kit was the perfect way to boost performance and make the bike more fun to ride. If you’re considering the same upgrade, here’s everything I learned from my experience that can help you make the right choice.
Why Upgrade to a 60Cc Big Bore Kit?
I chose the 60cc big bore kit because it increases the engine displacement from 50cc to 60cc, giving my PW50 more power and torque. This upgrade made the bike faster and more responsive, which was great for both beginner and intermediate riders who want a little extra punch without jumping to a completely different bike.
What’s Included in a Typical Big Bore Kit?
When I bought my kit, it came with several components that work together for the upgrade:
- A larger cylinder and piston (60cc)
- New gaskets and seals
- Sometimes a matching carburetor or jetting kit to optimize fuel flow
- Installation instructions
Make sure your kit includes everything you need or be prepared to buy some parts separately.
Compatibility with My PW50
Not all big bore kits fit every PW50 model year, so I double-checked compatibility before purchasing. Most kits are designed for the standard PW50 engine, but verifying with the seller or manufacturer saves headaches later.
Material and Build Quality
I looked for kits made from high-quality aluminum alloy for the cylinder to ensure durability and good heat dissipation. The piston should have a tight tolerance for better performance and longevity. Avoid cheap kits with poor machining because they can cause engine damage or poor performance.
Installation Difficulty
Installing a big bore kit requires some mechanical skills. I recommend having basic knowledge of small engine mechanics or access to a trusted mechanic. Some kits come with clear instructions, but if you’ve never worked on a bike engine before, it might take some time or professional help.
Performance Benefits and Considerations
After installing my 60cc kit, my PW50 had noticeably better acceleration and top speed. However, I also had to adjust the carburetor settings to match the increased air and fuel flow. Remember that with more power, the bike might be less forgiving for absolute beginners, so consider the rider’s skill level.
Price and Value
Prices for 60cc big bore kits vary widely. I found that spending a bit more on a reputable brand with good reviews was worth it for peace of mind and quality. Cheap kits might save money upfront but could lead to costly repairs down the line.
Additional Upgrades to Consider
To get the most out of the big bore kit, I also upgraded the carburetor and exhaust system. These complementary upgrades helped improve engine breathing and overall performance. It’s something to keep in mind if you want the smoothest ride possible.
Final Thoughts
Upgrading my PW50 with a 60cc big bore kit was one of the best modifications I’ve made. It gave the bike new life and made riding more enjoyable. Just be sure to research thoroughly, choose a quality kit, and be prepared for the installation process. With the right approach, you’ll be riding a more powerful and exciting PW50 in no time!
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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