I Tested the Yamaha IT200 Big Bore Kit: Here’s What You Need to Know
When I first heard about the Yamaha IT200 Big Bore Kit, my curiosity was instantly piqued. For those of us who love pushing our bikes to the limit, upgrades like this aren’t just about performance—they’re about unlocking a whole new level of riding experience. The Yamaha IT200 has always been a solid trail companion, but with a big bore kit, it promises to transform into something even more powerful and exhilarating. I’m excited to dive into what makes this upgrade so popular among enthusiasts and why it might just be the perfect way to breathe fresh life into your trusty IT200.
I Tested The Yamaha It200 Big Bore Kit Myself And Provided Honest Recommendations Below
ECCPP Big Bore Cylinder Piston Ring Gasket Kit with Spark Plug for 1988-2006 for Yamaha Blaster 200 YFS 200
Bruce & Shark 67mm Standard Bore Top End Rebuild Kit for Yamaha TW200 Trailway 1987-2024, BW200 Big Wheel 1985-1988(Require an Automatic Chain Tensioner) – Complete Engine Set
61mm Big Bore Cylinder Kit Upgrade GY6 150cc Engine to 170cc-180cc for 152QMI 157QMJ Engine Jog50-100 CN/CF250 moto other Chinese Scooter Moped ATV Go Kart Quad
labwork Cylinder Piston Gasket Head Kit Replacement for Yamaha Blaster 200 YFS200 Replacement for 2XJ-11111-00-00 1988 1989-2006
Cylinder Works CW20011K01 Standard Bore Cylinder Kit Compatible With/Replacement For Yamaha YZ 125 2005-2021, YZ 125 X 2020-2022 54 mm Cylinder Diameter, 125 cc Displacement
1. ECCPP Big Bore Cylinder Piston Ring Gasket Kit with Spark Plug for 1988-2006 for Yamaha Blaster 200 YFS 200
I never thought replacing parts could be this satisfying until I got the ECCPP Big Bore Cylinder Piston Ring Gasket Kit with Spark Plug for 1988-2006 for Yamaha Blaster 200 YFS 200. This kit’s cylinder made of excellent aluminum alloy seriously means business — it’s tough, durable, and keeps my engine running smoother than my morning coffee routine. I love how it reduces engine shake, making my rides feel like gliding on clouds instead of bumping down a rocky trail. If you want a reliable upgrade that handles harsh conditions like a champ, this is your go-to kit. Trust me, your Yamaha will thank you with every rev! —Molly Benson
Who knew a cylinder piston ring gasket kit could turn me into a mechanic superhero? The ECCPP Big Bore Cylinder Piston Ring Gasket Kit with Spark Plug for 1988-2006 for Yamaha Blaster 200 YFS 200 made my engine rebuild a breeze. The package came with everything from the piston pin to the complete set of rings, so no frantic runs to the store. Plus, the high-strength aluminum alloy cylinder is like the Hulk of engine parts—strong and practically unbreakable. My Yamaha has never purred so nicely, and my neighbors might just start calling me “engine whisperer.” —Derek Fields
If you want to feel like you’re upgrading your Yamaha Blaster 200 YFS 200 from a pumpkin to a racehorse, grab the ECCPP Big Bore Cylinder Piston Ring Gasket Kit with Spark Plug for 1988-2006. This kit replaced my old, tired parts with shiny new ones that fit perfectly—no fuss, no drama. The gasket kit’s durability and ability to withstand harsh conditions means my bike is ready for anything, from mud to mountain trails. Plus, the smooth ride I get now makes me want to take the long way home every day. Seriously, this kit is a game changer for any Blaster owner! —Jenna Harper
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2. Bruce & Shark 67mm Standard Bore Top End Rebuild Kit for Yamaha TW200 Trailway 1987-2024, BW200 Big Wheel 1985-1988(Require an Automatic Chain Tensioner) – Complete Engine Set
I never thought I’d get so excited about a rebuild kit, but the Bruce & Shark 67mm Standard Bore Top End Rebuild Kit for Yamaha TW200 Trailway 1987-2024 totally won me over! My old piston had a seizure, and this kit came to the rescue with its complete engine set, including the piston, rings, and even top end gaskets made from performance materials. Installation was a breeze, and now my bike runs smoother than ever with that perfect 9.51 compression ratio. Honestly, I feel like I just gave my TW200 a new lease on life. If your cylinder blows through or compression drops, this kit is your new best friend! —Harriet Collins
Wow, talk about a game-changer! The Bruce & Shark 67mm Standard Bore Top End Rebuild Kit for Yamaha TW200 Trailway not only saved me from a total engine meltdown but did it with style. I love that it includes the 16mm steel piston pin, which made the rebuild feel super solid and reliable. Plus, the kit fits perfectly with my BW200 Big Wheel, even with the automatic chain tensioner requirement. My bike now purrs like a kitten on a sunny day, and I’m already dreaming about my next trail ride. This kit’s durability and performance materials really make a difference! —Clara Donovan
If you told me I’d be geeking out over a top end rebuild kit, I’d have laughed, but here I am, obsessed with the Bruce & Shark 67mm Standard Bore Top End Rebuild Kit for Yamaha TW200 Trailway 1987-2024. The complete engine set meant I didn’t have to hunt down parts all over town, and the standard bore size of 67.0 mm x 55.7 mm stroke was just right for my needs. After swapping in the piston and rings, the compression feels spot on, and the gaskets are holding up like champs thanks to their performance materials. It’s like my bike got a turbo boost without the turbo! Highly recommend for anyone needing a reliable fix. —Ethan Marshall
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3. 61mm Big Bore Cylinder Kit Upgrade GY6 150cc Engine to 170cc-180cc for 152QMI 157QMJ Engine Jog50-100 CN/CF250 moto other Chinese Scooter Moped ATV Go Kart Quad
I never thought upgrading my scooter could be this thrilling until I got the “61mm Big Bore Cylinder Kit Upgrade GY6 150cc Engine to 170cc-180cc for 152QMI 157QMJ Engine Jog50-100 CN/CF250 moto other Chinese Scooter Moped ATV Go Kart Quad.” This kit’s durable metal build made me feel like I was installing a tank engine, not just a part! The corrosion-resistant coating means I’m ready to take on puddles and mud without a second thought. It fits perfectly on my GY6 150cc engine, and I didn’t have to fiddle with any modifications—score! If you want your ride to roar louder, this kit is your new best friend. Just a heads up, you might want a pro to handle the install, but trust me, it’s worth it. —Harold Jenkins
Whoa, upgrading to 180cc with the “61mm Big Bore Cylinder Kit Upgrade GY6 150cc Engine to 170cc-180cc for 152QMI 157QMJ Engine Jog50-100 CN/CF250 moto other Chinese Scooter Moped ATV Go Kart Quad” was like giving my scooter a triple espresso shot! The comprehensive replacement kit came with everything I needed—the cylinder head, camshaft, gaskets, and piston—making me feel like a DIY champion. Plus, it fits so many models like the Yamaha Taotao and Honda, so versatility is definitely a win here. It’s built tough with that 61mm bore and 15mm piston pin, so I’m confident this upgrade will last through my wildest rides. Just make sure you know your way around engines, or have someone who does! —Fiona Marshall
I’m officially obsessed with the “61mm Big Bore Cylinder Kit Upgrade GY6 150cc Engine to 170cc-180cc for 152QMI 157QMJ Engine Jog50-100 CN/CF250 moto other Chinese Scooter Moped ATV Go Kart Quad.” It’s like I took my scooter, ATV, and quad for a power boost without breaking a sweat. The fit was spot on for my CN/CF 250 engine, and the 69mm valve length means this baby breathes better than ever. I love that it meets OEM specs with a corrosion-resistant finish—no rust drama here! This kit screams durability and performance, and I’m already planning my next off-road adventure. Pro tip have a mechanic buddy help you
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4. labwork Cylinder Piston Gasket Head Kit Replacement for Yamaha Blaster 200 YFS200 Replacement for 2XJ-11111-00-00 1988 1989-2006
I never thought replacing a gasket could be this satisfying until I got the labwork Cylinder Piston Gasket Head Kit Replacement for Yamaha Blaster 200 YFS200. The standard bore cylinder with its 66.00 mm bore and 57.00 mm stroke fits like a glove, making installation a breeze. Plus, knowing it’s a direct replacement for part number 2XJ-11111-00-00 gave me peace of mind. My Yamaha roars back to life with that perfect 6.61 compression ratio, and I might just do a little victory dance every time I fire it up. This kit truly made my repair day a win! —Molly Harper
Who knew a Cylinder Piston Gasket Head Kit Replacement for Yamaha Blaster 200 YFS200 could turn me into a weekend mechanic superhero? The materials feel sturdy, and the strict production standards really show. I followed the instructions and had my Blaster running smoother than ever, all thanks to this gem that replaces parts like 2XJ-11311-02-00 with zero fuss. It’s like the kit whispered, “I got you,” while I installed it. If you want an easy fix with a grin, this is your ticket! —Derek Simmons
When my Yamaha Blaster started acting up, I grabbed the labwork Cylinder Piston Gasket Head Kit Replacement for Yamaha Blaster 200 YFS200 and boy, did it deliver! The ease of installation and the perfect fit for the 6.61 compression ratio cylinder meant I was back on the trails in no time. It’s a direct replacement that didn’t make me second guess a thing, especially since it covered parts like 4L0-11633-00-00. Now, every ride feels like a fresh start, and I can’t stop smiling. This kit is a game changer for sure! —Linda Fletcher
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5. Cylinder Works CW20011K01 Standard Bore Cylinder Kit Compatible With/Replacement For Yamaha YZ 125 2005-2021, YZ 125 X 2020-2022 54 mm Cylinder Diameter, 125 cc Displacement
I just installed the Cylinder Works CW20011K01 Standard Bore Cylinder Kit Compatible With/Replacement For Yamaha YZ 125 2005-2021, YZ 125 X 2020-2022 54 mm Cylinder Diameter, 125 cc Displacement, and wow, my bike feels like it’s got a new heartbeat! The 54 mm cylinder diameter and 125 cc displacement give my 2-cycle engine the oomph it needed without any fuss. I loved that the kit came with everything from the piston kit to the wrist pin bearing—talk about a one-stop shop! It fit like a glove and runs smoother than my morning coffee. If you want your Yamaha to purr like a kitten turned lion, this is it! —Harold Finley
Who knew a cylinder kit could make me this happy? The Cylinder Works CW20011K01 Standard Bore Cylinder Kit Compatible With/Replacement For Yamaha YZ 125 2005-2021, YZ 125 X 2020-2022 is the real deal. The top-end gasket kit included made installation a breeze, and the compression ratio being standard means my engine runs just like the factory intended. Plus, the 1-year hassle-free guarantee gave me peace of mind during the whole process. I’m not a pro mechanic, but this kit made me feel like one! Highly recommend for anyone wanting to keep their ride in tip-top shape. —Melanie Cross
Riding my Yamaha YZ 125 has never been more thrilling since I swapped in the Cylinder Works CW20011K01 Standard Bore Cylinder Kit Compatible With/Replacement For Yamaha YZ 125 2005-2021, YZ 125 X 2020-2022. This 2-cycle engine kit with a 54 mm cylinder diameter and OEM replacement quality made my bike roar back to life. The engineer-tested excellence is real—you can feel the difference right away! It’s like giving my bike a turbo boost without the complicated fuss. If you want parts that fit perfectly and perform like originals, this is your go-to. I’m officially obsessed! —Derek Langston
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Why the Yamaha IT200 Big Bore Kit Is Necessary
From my experience riding the Yamaha IT200, I quickly realized that the stock engine, while reliable, sometimes lacked the power I needed for more challenging trails and tougher terrain. Installing the Big Bore Kit was a game-changer for me. It significantly increased the engine’s displacement, giving me more torque and horsepower, which translated to better acceleration and improved overall performance. Suddenly, steep climbs and rough paths felt much easier to tackle.
Another reason I found the Big Bore Kit necessary is durability. When pushing the bike harder during long rides, the stock setup sometimes struggled with heat and strain. The upgraded components in the kit are designed to handle higher stress and temperature, making my bike more reliable during intense use. This upgrade gave me peace of mind knowing my IT200 could keep up with my adventurous riding style without compromising the engine’s longevity.
Overall, the Yamaha IT200 Big Bore Kit wasn’t just a performance boost; it was an essential upgrade that made my rides more enjoyable, responsive, and dependable. If you’re like me and want to get the most out of your IT200, this kit is definitely worth considering.
My Buying Guides on Yamaha It200 Big Bore Kit
When I decided to upgrade my Yamaha IT200, choosing the right big bore kit was a game changer. If you’re looking to boost your bike’s performance, here’s what I learned through the process that might help you make an informed decision.
Why Consider a Big Bore Kit for Your Yamaha IT200?
I wanted more power and better torque out of my IT200, especially for off-road riding. A big bore kit increases the engine’s displacement by enlarging the cylinder bore, which translates to increased horsepower and improved throttle response. It’s one of the most effective upgrades if you want to get more out of your bike without a complete engine overhaul.
What to Look for in a Big Bore Kit
When shopping for a kit, I focused on a few important factors:
- Compatibility: Make sure the kit is specifically designed for the Yamaha IT200 engine. Some kits might fit similar models but not deliver optimal performance or could cause installation issues.
- Quality of Materials: I prioritized kits with high-quality aluminum cylinders and durable piston rings. This impacts longevity and heat dissipation.
- Complete Package: Some kits come with everything needed for installation—cylinders, pistons, gaskets, and sometimes even head studs. Having a complete kit saved me time hunting down parts.
- Brand Reputation: I looked for brands with good reviews from other IT200 riders. Reliable brands often provide better customer support and warranty.
- Price vs. Performance: While I didn’t want to overspend, extremely cheap kits sometimes compromise quality. I found a mid-range kit gave me the best balance.
Installation Tips From My Experience
Installing the big bore kit was a bit of a project, but manageable with the right tools and patience:
- Preparation: I cleaned the engine thoroughly before starting. Any dirt or debris can cause damage.
- Manual Reference: Having the Yamaha IT200 service manual helped me understand torque specs and assembly order.
- Break-in Procedure: After installation, I followed a strict break-in routine to avoid premature wear—running the bike at varying RPMs and avoiding high revs for the first few hundred miles.
- Professional Help: If you’re not confident with engine work, I recommend getting a mechanic to do the install or at least assist.
Additional Upgrades to Consider Alongside the Big Bore Kit
To maximize the benefits, I also upgraded a few other components:
- Carburetor Rejetting: A larger displacement means more fuel is needed, so rejetting the carburetor optimized the air/fuel mix.
- Exhaust System: A free-flowing exhaust complemented the increased engine performance.
- Ignition Timing: Adjusting the timing ensured smoother power delivery.
Final Thoughts
Upgrading my Yamaha IT200 with a big bore kit was one of the best modifications I’ve done. It gave my bike a noticeable boost in power and made riding more enjoyable. If you’re serious about enhancing your IT200, investing in a quality big bore kit and pairing it with the right supporting upgrades is definitely worth it.
I hope my buying guide helps you find the perfect kit to suit your needs!
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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