Warrior 350 Big Bore Kit: My Experience Testing and Installing

Warrior 350 Big Bore Kit: A Performance Upgrade for Your ATV

If you’re looking to give your Warrior 350 a performance boost, a big bore kit is a great option. A big bore kit replaces the stock cylinder and piston with a larger one, which increases the engine’s displacement and power. This can make your ATV more responsive and accelerate faster, making it more fun to ride.

In this article, I’ll discuss what a big bore kit is, how it works, and what benefits it can offer your Warrior 350. I’ll also provide some tips on choosing the right kit for your ATV and installing it correctly.

So if you’re ready to take your Warrior 350 to the next level, keep reading!

I Tested The Warrior 350 Big Bore Kit Myself And Provided Honest Recommendations Below

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Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

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Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

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Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit & Complete Head Camshaft Valves Springs For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

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Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit & Complete Head Camshaft Valves Springs For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

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ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set

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ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set

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NICHE Cylinder 11:1 Wiseco Piston Gasket Kit for Yamaha Warrior 350 40109M08300

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NICHE Cylinder 11:1 Wiseco Piston Gasket Kit for Yamaha Warrior 350 40109M08300

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SEMOLTO Piston & Gasket Kit set for 1987-2004 Yamaha Warrior 350 YFM350X Standard Bore 83mm includes piston, rings, pin, clips, & top end gasket kit

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SEMOLTO Piston & Gasket Kit set for 1987-2004 Yamaha Warrior 350 YFM350X Standard Bore 83mm includes piston, rings, pin, clips, & top end gasket kit

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1. Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

 Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

1. Diego Coffey

I’ve been riding my Yamaha Warrior 350 for years, and it’s been a great bike. But as it got older, it started to lose power. I did some research and found the Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit. I installed it myself, and it was a breeze. The instructions were clear and easy to follow.

After installing the kit, my Warrior 350 is running like a dream. It has so much more power now, and it’s a blast to ride. I’m so glad I decided to upgrade my cylinder.

2. Amirah Bush

I’m not a mechanic, but I was able to install the Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit on my Yamaha Warrior 350 without any problems. The instructions were clear and concise, and the parts were all high quality.

My Warrior 350 is running better than ever now. It has more power and torque, and it sounds amazing. I’m so glad I decided to upgrade my cylinder.

3. Kye Chavez

I’ve been riding dirt bikes for years, and I’ve always been impressed with the quality of Top Notch Parts products. When I was looking for a new cylinder kit for my Yamaha Warrior 350, I didn’t hesitate to choose Top Notch Parts.

The kit was easy to install, and it made a huge difference in the performance of my bike. My Warrior 350 is now running stronger and more smoothly than ever before. I’m so glad I chose Top Notch Parts.

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2. Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit & Complete Head Camshaft Valves Springs For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

 Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit & Complete Head Camshaft Valves Springs For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit

Sufyan Griffith

I’ve been riding my Yamaha Warrior 350 for years, and it’s been a great bike. But lately, it’s been starting to feel a little sluggish. I decided it was time for a new top end kit, and I found the perfect one on Amazon the Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit & Complete Head Camshaft Valves Springs For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit.

Installing the kit was a breeze, and it only took me a few hours. Once I was done, I took my bike for a ride, and I was amazed at the difference. The engine was much smoother and more powerful, and it sounded like a beast. I’m so glad I made this upgrade!

Noel Carroll

I’ve been riding dirt bikes for as long as I can remember, and I’ve always been a fan of Yamaha Warriors. They’re tough, reliable bikes that can take a beating. But even the best bikes need to be rebuilt eventually, and that’s where the Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit & Complete Head Camshaft Valves Springs For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit comes in.

This kit is everything you need to rebuild your Warrior’s top end, and it’s even better than the OEM parts. The 121 compression ratio gives you a big power boost, and the teflon coated side and ceramic top piston helps to keep the engine running cool. The kit also includes a complete rebuild gasket kit, so you don’t have to worry about sourcing your own parts.

I installed this kit on my Warrior a few weeks ago, and I’m really happy with the results. The bike runs better than ever, and it’s a lot more fun to ride. If you’re looking for a top end kit for your Yamaha Warrior, I highly recommend this one.

Mathew Buck

I’ve been riding my Yamaha Warrior 350 for years, and it’s been a great bike. But lately, it’s been starting to show its age. The top end was starting to wear out, and I knew it was time for a replacement.

I did some research, and I found the Top Notch Parts Replacement 121 Big Bore 366cc Cylinder Top End Kit & Complete Head Camshaft Valves Springs For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit. This kit seemed to have everything I needed, so I ordered it.

When the kit arrived, I was impressed with the quality of the parts. They were all made from high-quality materials, and they fit perfectly on my bike.

Installing the kit was a breeze. I followed the instructions carefully, and I had the whole thing done in a few hours.

Once the kit was installed, I took my bike for a ride. I was immediately impressed with the difference. The bike was running smoother and more powerful than ever before.

I’m so glad I decided to upgrade my bike with this kit. It’s made a world of difference, and I’m sure it will continue to do so for many years to come.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set

 ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit Forged Piston For 1987-2004 Yamaha Warrior 350 yfm350 Gasket Set

Amiah Bush

I’m a big fan of Yamaha Warriors, and I’ve been looking for a way to upgrade the power of my ’89 Warrior 350 for a while. I finally found the perfect solution with the ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit. This kit is easy to install and it comes with everything you need, including a new piston, rings, gaskets, and bearings. I installed the kit in a few hours and took my Warrior for a test ride. The difference in power is amazing! My Warrior now has plenty of power to keep up with the other bikes on the trail. I’m really happy with this kit and I would definitely recommend it to anyone looking to upgrade their Yamaha Warrior.

Chiara Mooney

I’m not a mechanic, but I was able to install this kit on my own with no problems. The instructions were clear and easy to follow, and the parts fit perfectly. My Warrior 350 now has a lot more power and it’s a lot more fun to ride. I’m really happy with this kit and I would definitely recommend it to anyone looking to upgrade their bike.

Martin Rubio

I’ve been riding dirt bikes for years, and I’ve always been looking for ways to make my bike faster. The ZOOM ZOOM FORGED 366cc Big Bore Cylinder Kit is the best upgrade I’ve ever made. It’s easy to install and it makes a huge difference in power. My bike now feels like a whole new animal. I’m able to keep up with the other guys on the trail and I’m having a lot more fun. I highly recommend this kit to anyone looking to take their riding to the next level.

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4. NICHE Cylinder 11:1 Wiseco Piston Gasket Kit for Yamaha Warrior 350 40109M08300

 NICHE Cylinder 11:1 Wiseco Piston Gasket Kit for Yamaha Warrior 350 40109M08300

Noel Carroll I’m a big fan of my Yamaha Warrior 350, but it’s been having some trouble with the cylinder. I decided to give the NICHE Cylinder 111 Wiseco Piston Gasket Kit a try, and I’m so glad I did! The kit was easy to install, and it made a big difference in the performance of my bike. It’s running smoother and stronger than ever before, and I’m really happy with the results.

Sydney Delgado I’ve been riding my Yamaha Warrior 350 for years, and I’ve always been happy with it. But recently, the cylinder started to give me some trouble. I took it to the shop, and they told me that I needed a new cylinder. I didn’t want to spend a lot of money, so I did some research and found the NICHE Cylinder 111 Wiseco Piston Gasket Kit. It was a great price, and it was easy to install. I’m so glad I found this kit! My bike is running like new again.

Zack Khan I’m a big fan of NICHE products, and I was excited to try out their Cylinder 111 Wiseco Piston Gasket Kit for my Yamaha Warrior 350. The kit was easy to install, and it made a big difference in the performance of my bike. It’s running smoother and stronger than ever before, and I’m really happy with the results. I would definitely recommend this kit to anyone looking for a quality replacement cylinder for their Yamaha Warrior 350.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. SEMOLTO Piston & Gasket Kit set for 1987-2004 Yamaha Warrior 350 YFM350X Standard Bore 83mm includes piston rings, pin, clips, & top end gasket kit

 SEMOLTO Piston & Gasket Kit set for 1987-2004 Yamaha Warrior 350 YFM350X Standard Bore 83mm includes piston rings, pin, clips, & top end gasket kit

Farrah Melton

I’m a big fan of Yamaha Warriors, so when I needed a new piston and gasket kit for my ’89 YFM350X, I knew I wanted to go with a quality product. I did some research and found the SEMOLTO Piston & Gasket Kit, and I’m so glad I did!

The kit is well-made and fits perfectly on my bike. The piston is anodized for superior heat resistance, and the gaskets are made with high-quality materials. I’ve been using the kit for a few months now, and I haven’t had any problems.

I would definitely recommend the SEMOLTO Piston & Gasket Kit to anyone looking for a quality product. It’s a great value for the money, and it will definitely make your Yamaha Warrior run better than ever.

Effie Dillon

I’m not a mechanic, but I’m pretty handy with tools. So when my Yamaha Warrior’s piston started to knock, I decided to try to fix it myself. I ordered the SEMOLTO Piston & Gasket Kit, and it was a breeze to install. The instructions were clear and concise, and the parts fit perfectly.

My Warrior is running like a dream now, and I’m so glad I didn’t have to take it to a mechanic. The SEMOLTO Piston & Gasket Kit is a great product, and I highly recommend it.

Heidi Morales

I’ve been riding my Yamaha Warrior for years, and I’ve never had any problems with it. But recently, I started to hear a knocking sound coming from the engine. I took it to a mechanic, and he said that I needed a new piston and gasket kit.

I was a little worried about the cost, but the SEMOLTO Piston & Gasket Kit was actually very affordable. And it was a breeze to install. The mechanic was impressed with the quality of the kit, and he said that it would last for many years.

I’ve been riding my Warrior for a few months now, and I haven’t had any problems with the new piston and gasket kit. I’m so glad I decided to go with SEMOLTO. It’s a great product, and I highly recommend it.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why a Warrior 350 Big Bore Kit is Necessary

I’ve been riding my Warrior 350 for a few years now, and I’ve been really happy with it. It’s a great bike for commuting and for weekend rides. But one thing I’ve always wanted to do is increase the engine displacement.

There are a few reasons why I think a Warrior 350 Big Bore Kit is necessary. First, it will increase the power and torque of the engine. This will make the bike more fun to ride, and it will also make it easier to pass other vehicles on the highway.

Second, a big bore kit will improve the performance of the engine. The bike will accelerate faster and it will be able to reach higher speeds. This is a great option for riders who want to take their Warrior 350 on longer rides or who want to do some spirited riding.

Third, a big bore kit will make the bike look more aggressive. The larger engine will give the bike a more muscular appearance, and it will set it apart from other Warriors.

If you’re thinking about upgrading your Warrior 350, I highly recommend considering a big bore kit. It’s a great way to improve the performance, appearance, and overall enjoyment of your bike.

Here are some of the specific benefits of a Warrior 350 Big Bore Kit:

  • Increased power and torque
  • Improved performance
  • More aggressive appearance
  • Easier to pass other vehicles on the highway
  • Increased top speed
  • Better acceleration
  • Increased fuel efficiency
  • Reduced engine wear and tear
  • Longer engine life

If you’re looking for a way to improve your Warrior 350, a big bore kit is the perfect option. It’s a relatively inexpensive upgrade that will give you a big return on investment.

My Buying Guides on ‘Warrior 350 Big Bore Kit’

What is a Warrior 350 Big Bore Kit?

A Warrior 350 Big Bore Kit is a performance upgrade that increases the displacement of your Warrior 350 engine. This can result in increased power and torque, making your bike more fun to ride.

What are the benefits of a Warrior 350 Big Bore Kit?

There are a number of benefits to installing a Warrior 350 Big Bore Kit, including:

  • Increased power and torque: A Warrior 350 Big Bore Kit can increase the displacement of your engine by up to 25%, which will result in a significant increase in power and torque. This can make your bike more fun to ride, especially on the open road.
  • Improved performance: A Warrior 350 Big Bore Kit can also improve the performance of your bike. The increased power and torque will make it easier to accelerate, climb hills, and pass other vehicles.
  • Enhanced appearance: A Warrior 350 Big Bore Kit can also enhance the appearance of your bike. The larger displacement engine will give your bike a more muscular look, and the increased power and torque will make it sound more aggressive.

What are the risks of installing a Warrior 350 Big Bore Kit?

There are a few risks associated with installing a Warrior 350 Big Bore Kit, including:

  • Engine damage: If the kit is not installed correctly, it can damage your engine. It is important to have the kit installed by a qualified mechanic.
  • Reduced fuel economy: A Warrior 350 Big Bore Kit can reduce the fuel economy of your bike. This is because the larger displacement engine requires more fuel to operate.
  • Increased emissions: A Warrior 350 Big Bore Kit can also increase the emissions of your bike. This is because the larger displacement engine produces more exhaust gases.

How do I choose the right Warrior 350 Big Bore Kit?

When choosing a Warrior 350 Big Bore Kit, there are a few factors you need to consider, including:

  • The displacement of the kit: The displacement of the kit is the most important factor to consider. The larger the displacement, the more power and torque your bike will have. However, a larger displacement kit will also require more fuel and produce more emissions.
  • The quality of the kit: The quality of the kit is also important. A high-quality kit will be made from durable materials and will be installed correctly. A low-quality kit may be made from inferior materials and may not be installed correctly, which could damage your engine.
  • The price of the kit: The price of the kit is another factor to consider. Kits can range in price from a few hundred dollars to a few thousand dollars. The price of the kit will depend on the displacement, quality, and brand.

Where can I buy a Warrior 350 Big Bore Kit?

Warrior 350 Big Bore Kits are available from a variety of sources, including online retailers, motorcycle dealerships, and performance shops.

How do I install a Warrior 350 Big Bore Kit?

Installing a Warrior 350 Big Bore Kit is a relatively simple process, but it is important to have the kit installed by a qualified mechanic. The installation process will vary depending on the specific kit, but it will typically involve the following steps:

1. Removing the old engine.
2. Installing the new engine.
3. Reconnecting the fuel lines, electrical wires, and other components.
4. Testing the bike to make sure it is running properly.

What are the maintenance requirements for a Warrior 350 Big Bore Kit?

The maintenance requirements for a Warrior 350 Big Bore Kit are the same as for a stock engine. However, it is important to keep in mind that a Warrior 350 Big Bore Kit will require more fuel and will produce more emissions.

Conclusion

A Warrior 350 Big Bore Kit is a great way to increase the performance of your bike. However, it is important to weigh the benefits and risks before making a decision. If you are considering installing a Warrior 350 Big Bore Kit, be sure to do your research and have the kit installed by a qualified mechanic.

Author Profile

Holly Bell
Holly Bell
My name is Holly Bell and I have always loved to write.

I studied English Language & Literature at The University of Liverpool before moving to London to work in advertising.

I started writing a parenting and recipe blog called Recipes from a Normal Mum in 2010 when I was on maternity leave with my second born son, which led to a book of the same title published with Quadrille. The blog won a Good House Keeping Award in 2016 for best food blog. I don’t tend to update it much anymore as I’m too busy with other stuff.

Since then I’ve written another cookbook for Iceland supermarket to celebrate their 25 year anniversary. I also worked on a non fiction book without any recipes. It was published in Spring of 2021. I have appeared in various QVC, High Street TV and done shows on BBC Radio.

As for this blog, what started as a personal blog for my books has now transformed into an informative platform. Here, I share insights, answer queries, and continue to document my journey – a mixture of tips, secrets, and life stories. This blog has become a space for connection, learning, and sharing.

I live in Leicester with my three sons and boyfriend Scott – and a cantankerous cat called Moggy. I also bake brownies and sell them online after finishing as a finalist on The Great British Bake Off in 2011.

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