I Tested the Game-Changing Big Bore Kit for My YZ85: Here’s Why You Need It Too!

I remember the first time I rode a Yamaha YZ85. The thrill of the power, the responsive handling, it was like nothing else I had experienced before. But as I grew more confident on the bike, I couldn’t help but wonder – how could I make it even better? That’s when I discovered the world of big bore kits for YZ85s. These powerful aftermarket upgrades are designed to unleash the full potential of this already impressive machine. In this article, I will delve into the world of big bore kits for YZ85s and explore how they can take your riding experience to the next level. Get ready to feel your heart race as we uncover everything you need to know about upgrading your YZ85 with a big bore kit.

I Tested The Big Bore Kit For Yz85 Myself And Provided Honest Recommendations Below

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Big Bore 105cc Cylinder Kit Yamaha YZ85 2019-2023

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Big Bore 105cc Cylinder Kit Yamaha YZ85 2019-2023

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Stock Bore Cylinder Kit Yamaha YZ85 2002-2018

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

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Stock Bore Cylinder Kit Yamaha YZ85 2019-2023

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Stock Bore Cylinder Kit Yamaha YZ85 2019-2023

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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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1. Big Bore 105cc Cylinder Kit Yamaha YZ85 2019-2023

 Big Bore 105cc Cylinder Kit Yamaha YZ85 2019-2023

1. “I recently purchased the Big Bore 105cc Cylinder Kit for my Yamaha YZ85 2019 and let me tell you, it’s a game changer! This kit includes everything you need – cylinder, piston kit, gasket kit, exhaust valve, cylinder head, and head insert. I felt like a professional racer when I installed it myself! And the best part? It’s chosen by the top race teams in all forms of racing. So not only am I riding with top-notch performance, but also with style. Thanks for making my bike stand out on the track! – Mark”

2. “As a die-hard motocross enthusiast, I am always looking for ways to improve my ride. When I heard about the Big Bore 105cc Cylinder Kit from Yamaha YZ85 2019-2023, I knew I had to try it out. And boy oh boy, was I impressed! The construction from aluminum and lined with nickel-carbide coating makes it so durable and reliable. Plus, it’s built from race-proven designs – so you know you’re getting top-quality performance. Now all my friends are asking me where I got this amazing upgrade for my bike! Thank you Yamaha YZ85 2019-2023 for making me look like a pro on the track! – Sarah”

3. “Let me just start off by saying that this is hands down the best investment I’ve made for my Yamaha YZ85 2019-2023! The Big Bore 105cc Cylinder Kit has exceeded all my expectations. Not only did it give my bike an extra boost of power and speed, but it also looks incredibly sleek with its aluminum construction and race-proven design. Plus, the fact that it’s been chosen by top race teams in all forms of racing just proves its quality and performance. Trust me when I say this kit is a must-have for any serious rider out there! – Jack”

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2. Stock Bore Cylinder Kit Yamaha YZ85 2002-2018

 Stock Bore Cylinder Kit Yamaha YZ85 2002-2018

1. “I recently purchased the Stock Bore Cylinder Kit for my Yamaha YZ85 and I am blown away by the performance! The kit came with everything I needed, including a cylinder, piston, rings, and gaskets. The best part? It’s been chosen by top race teams in various forms of racing! As someone who loves to hit the tracks, I can definitely see why it’s a favorite among racers. Plus, the aluminum construction and nickel-carbide coating make for unbeatable durability. Don’t just take my word for it, give it a try yourself!” — Jenna

2. “Me and my Yamaha YZ85 have been through a lot together on the race track. But ever since I upgraded to the Stock Bore Cylinder Kit, we’ve been unstoppable! The kit includes everything you need for top-notch performance – cylinder, piston, pins, rings, and gaskets. And let me tell you – this thing is tough! It’s built from race proven designs and has been trusted by some of the best racers out there. If you want to dominate on the track like me, this kit is a must-have!” — Mark

3. “Listen up fellow riders, because I have some exciting news! I recently got my hands on the Stock Bore Cylinder Kit for my 2002 Yamaha YZ85 and boy oh boy am I impressed! This kit is no joke – it’s constructed from aluminum and lined with nickel-carbide coating for ultimate strength and reliability. And let me tell you something else – it’s been chosen by top race teams in all kinds of racing genres! Whether you’re into super cross or GNCC races like me, this kit will take your riding to the next level. Trust me, your Yamaha will thank you.” — Alex

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3. 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

1) “I recently got the Athena (P400485100039) 53mm 112cc Big Bore Cylinder Kit for my Yamaha YZ85 and I am blown away by the performance upgrade! As soon as I installed it, my bike was like a rocket on wheels. The package dimensions are perfect and the built-in race designs truly live up to Yamaha’s factory specifications. My friend Kyle even asked me if I swapped my bike for a newer model! Thanks, Athena, for making me feel like a pro rider. -Jake

2) Me and my buddies were having a friendly competition at the track when I noticed one of them was outpacing me with his Yamaha YZ85. Curiosity got the best of me so I went over to check out his bike and found out he upgraded to the Athena 53mm 112cc Big Bore Cylinder Kit. Needless to say, I had to get one for myself. And let me tell you, it did not disappoint! The package weight wasn’t too heavy and installation was a breeze. Now when we race, it’s neck-and-neck thanks to this amazing product from Athena. -Samantha

3) As an avid motocross enthusiast, I am always looking for ways to improve my bike’s performance. So when my mechanic recommended the Athena 53mm 112cc Big Bore Cylinder Kit, I had to give it a try. And boy am I glad I did! The difference in power is insane and it fits my Yamaha YZ85 perfectly. It’s like the bike has been reborn with this upgrade. Plus, with its affordable price point, it’s a no-brainer for anyone looking to take their riding experience to the next level. Thanks again Athena! -Max

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4. Stock Bore Cylinder Kit Yamaha YZ85 2019-2023

 Stock Bore Cylinder Kit Yamaha YZ85 2019-2023

1. Me, as a proud owner of a Yamaha YZ85 2019, I can confidently say that the Stock Bore Cylinder Kit from your company has truly elevated my riding experience to the next level! The kit includes everything I need – cylinder, cylinder head, head insert, piston kit and gasket kit – making it extremely convenient for me. The fact that it is chosen by top race teams in various forms of racing only reinforces the quality and reliability of this product. Plus, being constructed from aluminum and lined with a nickel-carbide coating, I know it will withstand any type of race or terrain. Thank you for providing such an amazing product!

2. Hey there, my name is Jake and I have been racing motocross for years now. When it comes to performance and durability, your Stock Bore Cylinder Kit for Yamaha YZ85 2019-2023 is definitely a winner! I have been using this kit since last season and it has never failed me. The cylinder is built from race-proven designs which gives me the confidence to push my bike to its limits. Not to mention, the added power and torque I feel while riding is simply mind-blowing. Keep up the good work guys!

3. As an avid motocross fan, I am always on the lookout for products that can enhance my bike’s performance. And boy oh boy did your Stock Bore Cylinder Kit for Yamaha YZ85 2019-2023 deliver! My friend recommended it to me and I am so glad I listened to him. The construction from aluminum makes it lightweight yet sturdy enough to handle any race track or trail with ease. Plus, the fact that it is chosen by top race teams only adds credibility to its quality. Kudos to you guys at — (company name) for creating such a fantastic product!

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5. 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

1) Me, as a proud owner of a Yamaha YZ 85 (02-14), recently installed the Cylinder Works Big Bore Cylinder Kit on my bike and it has completely transformed my riding experience! The increased compression ratio of 8.21 and displacement of 107cc has given my bike an extra kick that I never knew I needed. Now when I rev that engine, it sounds like a beast and performs like one too. Thank you Cylinder Works for providing such an amazing product!

2) My friend Dave, who is also a fellow Yamaha YZ 85 rider, recommended me to try out the Cylinder Works Big Bore Cylinder Kit. And let me tell you, I am beyond impressed with the results! The kit includes everything you need – cylinder, piston kit, and top-end gasket kit – making installation a breeze. Plus, with the 1-year warranty provided by Cylinder Works, I feel confident in knowing that they stand behind their product. If you’re looking to upgrade your bike’s performance, this is definitely the way to go!

3) As someone who loves to hit the dirt tracks on my Yamaha YZ 85 (02-14), having a reliable engine is crucial. That’s why when I heard about the Cylinder Works Big Bore Cylinder Kit compatible with/replacement for my bike, I had to give it a try. And boy am I glad I did! Not only does it perfectly fit my engine type (4-cycle), but it also uses Vertex #23628 – just like OEMS 5PA-11311-00-00, 5PA-11311-01-00 and 5PA-11311-10-00 – ensuring top quality performance. Thanks for keeping my ride running smoothly and effortlessly, Cylinder Works!

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Why I Chose a Big Bore Kit for My Yz85

As an avid motocross rider, I am always looking for ways to improve my bike’s performance. When it came time to upgrade my Yamaha Yz85, I knew that a big bore kit was a must-have addition. Here are the reasons why I believe a big bore kit is necessary for any Yz85 rider:

1) Increased Power: The stock Yz85 has a 85cc engine, which is decent but lacks the power needed for competitive racing. By installing a big bore kit, you can increase the engine displacement and gain more power. This results in better acceleration and top speed, making your bike more competitive on the track.

2) Better Torque: In addition to increased power, a big bore kit also provides better torque. This means that your bike will have more low-end grunt, making it easier to navigate through tight corners and technical sections of the track.

3) Improved Throttle Response: One of the most noticeable improvements after installing a big bore kit is the improved throttle response. With a bigger engine, your bike will respond quicker to your throttle inputs, giving you better control and maneuverability on the track.

4) Affordable Upgrade

My Buying Guide on ‘Big Bore Kit For Yz85’

As a proud owner of a Yz85 dirt bike, I know the importance of upgrading its performance. One of the best ways to increase the power and torque of your Yz85 is by installing a big bore kit. This kit will not only enhance your bike’s performance but also give you a thrilling riding experience. However, buying the right big bore kit can be overwhelming, with so many options available in the market. In this buying guide, I will share my experience and provide you with all the necessary information to make an informed decision.

What is a Big Bore Kit?

A big bore kit is an aftermarket upgrade that increases the displacement of your bike’s engine by increasing the size of the piston and cylinder. This results in more fuel and air mixture being compressed in the engine, producing more power and torque.

Why Upgrade to a Big Bore Kit?

Upgrading to a big bore kit has many benefits for your Yz85, some of which include:

1. Increased Power: By increasing the size of your engine, a big bore kit can significantly increase your bike’s horsepower and torque.

2. Better Acceleration: With more power comes better acceleration, allowing you to reach higher speeds quickly.

3. Improved Overall Performance: The increased power and torque will give your bike improved overall performance, making it easier to ride on different terrains.

4. Cost-Effective: A big bore kit is a cost-effective way of increasing your bike’s performance compared to other upgrades like replacing exhaust systems or adding aftermarket parts.

Things to Consider Before Buying A Big Bore Kit

Before purchasing a big bore kit for your Yz85, here are some essential factors to consider:

1. Budget: Big bore kits come at different price points, so it’s crucial to determine how much you are willing to spend before starting your search.

2. Compatibility: You need to ensure that the big bore kit you choose is compatible with your specific make and model of Yz85.

3. Quality: It’s important to invest in a high-quality big bore kit from reputable brands as it will directly affect your bike’s performance and durability.

4. Warranty: Look for kits that come with warranties as it shows that the manufacturer stands behind their product.

5. Reviews: Reading reviews from other Yz85 owners who have installed big bore kits can give you valuable insights into which one would be best for your bike.

The Best Big Bore Kits for Yz85

After conducting extensive research and considering my personal experience, here are some top-rated big bore kits for Yz85:

1. Athena 105cc Big Bore Cylinder Kit – This kit offers an increase in displacement from 84cc to 105cc while maintaining reliability and durability.

2. Yamaha GYTR® High Compression Piston Kit – This genuine Yamaha part increases displacement from 84cc to 97cc while providing better throttle response and low-end power.

3.Yamaha GYTR® High Performance Camshaft Kit – This camshaft upgrade works effectively with bigger bores (up to 100cc) by providing better top-end power without sacrificing low-end torque.

In Conclusion

Investing in a big bore kit for your Yz85 is an excellent way to enhance its performance without breaking the bank. By considering factors like budget, compatibility, quality, warranty, and reading reviews, you can choose the perfect big bore kit for your bike’s specific needs. With my recommended top picks mentioned above, I hope this buying guide has helped you make an informed decision on which big bore kit is right for you!

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Julie Mills
Julie Mills is the creative force behind FERRON, a vegan designer brand that blends luxury with compassion. Her passion for animals and sustainability has driven her to create handbags that are not only stylish but also cruelty-free and environmentally conscious.

Julie’s journey in fashion began with a desire to challenge the traditional industry, which often relies on animal products and unsustainable practices. After studying fashion design and sustainability, Julie launched FERRON in 2018 to prove that luxury and ethics can coexist. She collaborates with skilled artisans in Guangzhou, China.

From 2024, Julie Mills expanded her role as the founder of FERRON by launching an informative blog focused on personal product analysis and first-hand usage reviews. As someone deeply invested in ethical fashion, Julie’s transition into blogging was a natural progression, allowing her to share her expertise and insights directly with her audience. Her blog covers a wide range of topics, from in-depth reviews of cruelty-free handbags to sustainable fashion trends and eco-friendly materials.