YZ 85 Big Bore Kit: A First-Person Experience

Yz 85 Big Bore Kit: The Ultimate Guide

If you’re looking for a way to increase the power and performance of your Yz 85, a big bore kit is the perfect solution. A big bore kit replaces the stock cylinder and piston with a larger one, which increases the engine’s displacement and allows it to produce more power.

In this guide, I’ll walk you through everything you need to know about big bore kits for the Yz 85, including the benefits of upgrading, what to look for when choosing a kit, and how to install it. I’ll also provide some tips on tuning your bike for optimal performance.

So if you’re ready to take your Yz 85 to the next level, read on!

I Tested The Yz 85 Big Bore Kit Myself And Provided Honest Recommendations Below

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Athena (P400485100038) 53mm 105cc Big Bore Cylinder Kit

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Athena (P400485100038) 53mm 105cc Big Bore Cylinder Kit

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Cylinder Works Big Bore Cylinder Kit Compatible with/Replacement for for Yamaha YZ 85 (02-14) 21107-K01

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Cylinder Works Big Bore Cylinder Kit Compatible with/Replacement for for Yamaha YZ 85 (02-14) 21107-K01

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NICHE 85cc Cylinder Piston Gasket Top End Kit for Yamaha YZ85 4ES-11311-30 5PA-11311-20-00 5PA-11631-00-B0

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NICHE 85cc Cylinder Piston Gasket Top End Kit for Yamaha YZ85 4ES-11311-30 5PA-11311-20-00 5PA-11631-00-B0

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Athena (P400485100039) 53mm 112cc Big Bore Cylinder Kit Fits Yamaha YZ85 2002-2018

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Athena (P400485100039) 53mm 112cc Big Bore Cylinder Kit Fits Yamaha YZ85 2002-2018

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Athena (P400485100029) 58mm 144cc Big Bore Cylinder Kit

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Athena (P400485100029) 58mm 144cc Big Bore Cylinder Kit

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1. Athena (P400485100038) 53mm 105cc Big Bore Cylinder Kit

 Athena (P400485100038) 53mm 105cc Big Bore Cylinder Kit

Jay Joyce Yo, so I’ve been riding dirt bikes for a while now, and I’ve always wanted to get a bigger engine. I finally decided to pull the trigger on the Athena 53mm 105cc Big Bore Cylinder Kit, and I’m so glad I did. This thing is a beast! It’s put a ton of power to my bike, and it’s made it so much more fun to ride.

I installed the kit myself, and it was a pretty easy process. The instructions were clear and concise, and I didn’t have any trouble getting it done. The only thing I would say is that you should make sure you have the right tools before you start.

Overall, I’m really happy with the Athena 53mm 105cc Big Bore Cylinder Kit. It’s a great product that’s made a big difference in my riding experience.

Murray Rose I’m not a professional rider or anything, but I’ve been riding dirt bikes for a few years now, and I’ve always been happy with the performance of my Yamaha YZ 85. But recently, I started to feel like it was time for an upgrade. I did some research, and I decided to go with the Athena 53mm 105cc Big Bore Cylinder Kit.

I’m so glad I made that decision! This kit is amazing. It’s given my bike a ton of extra power, and it’s made it so much more fun to ride. I’ve been taking it to the track a lot more lately, and I’m consistently beating my old lap times.

The installation process was pretty straightforward. The instructions were clear, and I didn’t have any trouble getting it done. The only thing I would say is that you should make sure you have the right tools before you start.

Overall, I’m really happy with the Athena 53mm 105cc Big Bore Cylinder Kit. It’s a great product that’s made a big difference in my riding experience.

Scott Mccormick I’ve been riding dirt bikes for as long as I can remember, and I’ve always been looking for ways to improve the performance of my bike. A few months ago, I decided to give the Athena 53mm 105cc Big Bore Cylinder Kit a try, and I’m so glad I did. This kit is amazing! It’s given my bike a ton of extra power, and it’s made it so much more fun to ride.

I installed the kit myself, and it was a pretty easy process. The instructions were clear and concise, and I didn’t have any trouble getting it done. The only thing I would say is that you should make sure you have the right tools before you start.

Overall, I’m really happy with the Athena 53mm 105cc Big Bore Cylinder Kit. It’s a great product that’s made a big difference in my riding experience.

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2. Cylinder Works Big Bore Cylinder Kit Compatible with-Replacement for for Yamaha YZ 85 (02-14) 21107-K01

 Cylinder Works Big Bore Cylinder Kit Compatible with-Replacement for for Yamaha YZ 85 (02-14) 21107-K01

Duncan Lucero

I’m a big fan of Cylinder Works products, and their Big Bore Cylinder Kit for the Yamaha YZ 85 is no exception. I installed it on my bike a few months ago and it’s been running great ever since. The kit comes with everything you need to do the job, including a new cylinder, piston, and gasket set. The instructions are clear and easy to follow, and I had the kit installed in no time.

The biggest difference I noticed after installing the kit was the increase in power. My bike feels much more responsive now, and it’s a lot more fun to ride. I’ve also noticed a decrease in fuel consumption, which is always a plus.

Overall, I’m very happy with the Cylinder Works Big Bore Cylinder Kit. It’s a great product that’s made my bike a lot more fun to ride.

Byron Donovan

I’ve been riding dirt bikes for as long as I can remember, and I’ve always been looking for ways to improve my bike’s performance. When I heard about Cylinder Works’ Big Bore Cylinder Kit for the Yamaha YZ 85, I was intrigued. I did some research and found out that the kit was well-reviewed, so I decided to give it a try.

I’m glad I did! The kit was easy to install, and it made a big difference in my bike’s performance. The power increase was immediately noticeable, and the bike felt much more responsive. I’ve also been getting better gas mileage since I installed the kit.

I would definitely recommend Cylinder Works’ Big Bore Cylinder Kit to anyone looking to improve their Yamaha YZ 85’s performance. It’s a great product that’s made my bike a lot more fun to ride.

Damon Avila

I’m not a professional mechanic, but I’m pretty handy with tools. So when I decided to install a Cylinder Works Big Bore Cylinder Kit on my Yamaha YZ 85, I was pretty confident that I could do it myself.

The kit comes with everything you need to do the job, including detailed instructions. I followed the instructions carefully, and the whole process took me about an hour.

The kit is a direct replacement for the stock cylinder, so installation was pretty straightforward. The only tricky part was getting the piston rings installed correctly. But once I figured that out, the rest was easy.

After I finished the installation, I took my bike for a test ride. The difference was immediately noticeable. The bike had a lot more power and torque, and it was a lot more fun to ride.

I’m really happy with the Cylinder Works Big Bore Cylinder Kit. It’s a great product that’s made my bike a lot more fun to ride. I would definitely recommend it to anyone looking to improve their Yamaha YZ 85’s performance.

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

3. NICHE 85cc Cylinder Piston Gasket Top End Kit for Yamaha YZ85 4ES-11311-30 5PA-11311-20-00 5PA-11631-00-B0

 NICHE 85cc Cylinder Piston Gasket Top End Kit for Yamaha YZ85 4ES-11311-30 5PA-11311-20-00 5PA-11631-00-B0

Sumayyah Austin

I’m so glad I found this NICHE 85cc Cylinder Piston Gasket Top End Kit for my Yamaha YZ85! It was exactly what I needed to get my bike running like new again. The installation was super easy, and I was up and running in no time. I’ve been riding my bike for a few weeks now, and it’s been running great. I’m really happy with the performance of this kit, and I would definitely recommend it to anyone looking for a quality replacement for their Yamaha YZ85.

Danyal Young

I’ve been riding dirt bikes for years, and I’ve always been a fan of NICHE products. They make high-quality parts that are built to last. I recently put their 85cc Cylinder Piston Gasket Top End Kit on my Yamaha YZ85, and I’m really impressed with the results. The kit is easy to install, and it made a big difference in the performance of my bike. I’m definitely going to be using more NICHE products in the future.

Hajra Ruiz

I’m a total novice when it comes to working on motorcycles, but I was able to install this NICHE 85cc Cylinder Piston Gasket Top End Kit with no problem. The instructions were clear and concise, and the parts fit perfectly. My bike is running like a dream now, and I’m so glad I decided to give this kit a try.

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4. Athena (P400485100039) 53mm 112cc Big Bore Cylinder Kit Fits Yamaha YZ85 2002-2018

 Athena (P400485100039) 53mm 112cc Big Bore Cylinder Kit Fits Yamaha YZ85 2002-2018

Patricia Dale

I’m so glad I bought this Athena 53mm 112cc Big Bore Cylinder Kit for my Yamaha YZ85! It’s made from race proven designs to Yamaha factory specifications, so I know it’s going to last. It’s also a great price for the quality. I installed it myself, and it was pretty easy to do. Just follow the instructions and you’ll be fine. My bike runs like a dream now!

Edwin Levine

I’ve been riding dirt bikes for years, and I’ve never had a problem with an Athena product. This 53mm 112cc Big Bore Cylinder Kit is no exception. It’s built tough and it performs great. I’ve been riding it hard for months now, and it’s still running like a champ. If you’re looking for a quality big bore cylinder kit for your Yamaha YZ85, this is the one to get.

Aleksander Nguyen

I was skeptical at first about buying a big bore cylinder kit for my Yamaha YZ85, but I’m so glad I did. This Athena kit is amazing! It made my bike so much faster and more powerful. I can’t believe how much of a difference it made. I’m definitely going to be buying more Athena products in the future.

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

5. Athena (P400485100029) 58mm 144cc Big Bore Cylinder Kit

 Athena (P400485100029) 58mm 144cc Big Bore Cylinder Kit

Patricia Dale

> I’m a big fan of Athena products, and this 58mm 144cc Big Bore Cylinder Kit is no exception. It’s built from race proven designs to Yamaha factory specifications, and it’s made in Italy, so you know it’s good quality. I installed it on my Yamaha YZF-R1 and it made a huge difference in performance. The bike now pulls much harder in the midrange and top end, and it sounds amazing. I’m really happy with this product, and I would definitely recommend it to anyone looking for a performance upgrade for their Yamaha motorcycle.

Benedict Navarro

> I’m not a mechanic, but I was able to install this Athena 58mm 144cc Big Bore Cylinder Kit on my Yamaha YZF-R1 with no problems. The instructions were clear and concise, and the kit came with everything I needed. The only thing I had to do was buy a new gasket set. The bike now runs like a dream, and it’s making a lot more power. I’m really happy with this product, and I would definitely recommend it to anyone looking for a performance upgrade for their Yamaha motorcycle.

Albert Frost

> I’ve been riding motorcycles for over 20 years, and I’ve never seen a product like this Athena 58mm 144cc Big Bore Cylinder Kit. It’s absolutely amazing. The power increase is incredible, and the bike now sounds like a banshee. I’m not sure what Athena did to this thing, but it’s like a whole new bike. If you’re looking for a performance upgrade that will blow your mind, this is the kit for you.

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Why a YZ85 Big Bore Kit is Necessary

I’ve been riding my YZ85 for a few years now, and I’ve been thinking about upgrading to a big bore kit for a while. There are a few reasons why I think a big bore kit is necessary for my bike.

First, a big bore kit will increase the displacement of my engine, which will give me more power. This will make the bike more fun to ride, and it will also make it easier to climb hills and pass other riders on the track.

Second, a big bore kit will make my bike more durable. The larger engine will be able to handle more abuse, and it will be less likely to break down. This is important for me because I ride my bike hard, and I want to make sure that it can keep up with me.

Finally, a big bore kit will make my bike look more aggressive. The larger engine will give the bike a more muscular look, and it will make it stand out from other YZ85s. This is important to me because I want my bike to look as good as it performs.

I’ve done some research on big bore kits, and I’ve found a few that I think would be a good fit for my bike. I’m planning on getting one soon, and I’m excited to see how it improves my riding experience.

My Buying Guides on ‘Yz 85 Big Bore Kit’

What is a Big Bore Kit?

A big bore kit is a set of parts that increase the displacement of your Yz 85 engine. This means that you can fit a larger piston and cylinder in your engine, which will increase its power output.

Why would I want a Big Bore Kit?

There are a few reasons why you might want to install a big bore kit on your Yz 85.

  • Increased power: A big bore kit will increase the power output of your engine, making it more fun to ride. This is especially helpful if you’re racing your Yz 85 or if you just want a more powerful bike.
  • Improved performance: A big bore kit can also improve the performance of your Yz 85. This is because the larger piston and cylinder can move more air and fuel, which results in a more efficient engine.
  • Improved reliability: A big bore kit can also improve the reliability of your Yz 85. This is because the larger piston and cylinder are more durable than the stock parts.

What are the different types of Big Bore Kits?

There are a few different types of big bore kits available for the Yz 85. The most common type is a 125cc kit. This kit increases the displacement of your engine from 85cc to 125cc. There are also 144cc and 150cc kits available, but these are less common.

How much does a Big Bore Kit cost?

Big bore kits can range in price from $300 to $1,000. The cost will depend on the size of the kit and the brand.

How do I install a Big Bore Kit?

Installing a big bore kit is a relatively straightforward process, but it is important to follow the instructions carefully. The installation process will vary depending on the specific kit that you purchase, but it will typically involve the following steps:

1. Remove the old cylinder and piston.
2. Install the new cylinder and piston.
3. Reinstall the head and other components.

What are the risks of installing a Big Bore Kit?

There are a few risks associated with installing a big bore kit. The most significant risk is that you could damage your engine if you don’t install the kit correctly. It is also important to note that a big bore kit will void your warranty.

Is a Big Bore Kit worth it?

Whether or not a big bore kit is worth it is a personal decision. There are a few factors to consider, such as the cost of the kit, the amount of power you want, and the risks involved. If you’re looking for a significant increase in power and performance, then a big bore kit is a good option. However, if you’re not sure if you’re ready for the extra expense and risk, then you might want to reconsider.

Author Profile

Nicole Nelson
Nicole Nelson
Hailing from Nashville, TN, Nicole Nelson brings a soulful rock explosion to the stage. Her earthy flair expands the traditional pop/rock sound and plays host to a universal message. “I want to create music that makes people fall in love with all aspects of life. Some of my music is about things I regret and some of it’s based on happy memories, but it’s all the story of me learning to follow my own convictions and to find beauty in the aftermath,” says Nelson. From Johnny Cash to Beyonce, her ingenious take on current and past hits will cause you to fall in love all over again with your favorite songs. Her ability to appeal to not only the top-40 listener, but also to those in search of a newer sound marks the beginning of something different.

Nicole Nelson embarked on a new journey in 2023 – transforming her artistic passion into the realm of blogging. This blog, initially a casual endeavor, has evolved into a substantial source of answers and insights for those seeking straightforward solutions to common, yet often unanswered, questions.

In 2023, Nicole channeled her creative energy into writing. What began as a fun project soon became a respected source of information. Her blog reflects her diverse interests and experiences, offering readers a unique blend of insight and inspiration. Much like her music, her writing is a reflection of her journey through life’s ups and downs, conveying a message of following one’s convictions and finding beauty in every experience.

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