Unlocking Power: My Personal Experience with the YZ85 Big Bore Kit Transformation

As an avid enthusiast of off-road biking, I’ve always been on the lookout for ways to elevate my riding experience and push the limits of my beloved machines. Recently, my journey led me to the fascinating world of performance upgrades, where I stumbled upon the YZ85 Big Bore Kit. This intriguing modification promises not just to enhance power but to transform the entire riding dynamic of the Yamaha YZ85. I was captivated by the idea of unlocking untapped potential in a bike that’s already a favorite among young riders and competitive racers alike. In this article, I’m excited to share my insights into what makes the YZ85 Big Bore Kit a game changer for those seeking to unleash the full capabilities of their two-wheeled companions. Whether you’re a seasoned racer or a weekend warrior, this upgrade could be the key to taking your skills and enjoyment to the next level. Join me as we delve into the impact of this kit on performance, handling, and the thrill of the ride!

I Personally Tested the YZ85 Big Bore Kit and Here Are My Honest Recommendations

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

As an avid motocross enthusiast and someone who values performance upgrades for my Yamaha YZ85, I couldn’t help but be impressed by the Big Bore 105cc Cylinder Kit designed specifically for the 2019-2023 models. This product not only promises to enhance the bike’s power but also ensures that it meets the rigorous demands of competitive racing. If you’re in the market for a way to elevate your riding experience, this kit may just be the upgrade you’ve been searching for.

The features of the Big Bore 105cc Cylinder Kit are impressive, to say the least. First and foremost, it is a perfect fit for the Yamaha YZ85 from 2019 to 2023, ensuring seamless integration into your bike without the hassle of modifications. Included in the kit are essential components such as the cylinder, piston kit, gasket kit, exhaust valve, cylinder head, and head insert. This comprehensive offering means I won’t have to scour for additional parts, making it incredibly convenient for anyone looking to upgrade their bike.

One of the standout attributes of this cylinder kit is its construction. The cylinder is crafted from aluminum and lined with a nickel-carbide coating. This not only enhances durability but also ensures reliable performance under the harshest racing conditions. The fact that it’s constructed from race-proven designs is a huge plus for me. Knowing that top race teams across various forms of racing—be it supercross, motocross, GNCC, or superbike—choose this kit speaks volumes about its capability and effectiveness.

For anyone considering this upgrade, the potential to significantly boost performance cannot be overlooked. The additional displacement from the 105cc cylinder allows for greater power output, which translates to improved acceleration and overall speed on the track. It’s an exciting prospect that can enhance my riding experience, whether I’m racing competitively or just enjoying a weekend ride with friends. The combination of increased power and reliable construction makes this kit a smart investment for anyone serious about their sport.

if you’re looking to take your Yamaha YZ85 to the next level, the Big Bore 105cc Cylinder Kit is a decision worth considering. The solid construction, comprehensive kit contents, and proven performance in competitive settings come together to create a product that can truly enhance your bike’s capabilities. I can confidently say that investing in this upgrade will not only elevate your performance but also provide you with an exhilarating riding experience that will keep you coming back for more.

Feature	Description
Compatibility	Fits Yamaha YZ85 (2019-2023)
Components Included	Cylinder, Piston Kit, Gasket Kit, Exhaust Valve, Cylinder Head, Head Insert
Endorsements	Chosen by top race teams in supercross, motocross, GNCC, superbike, and more
Material	Aluminum with nickel-carbide coating for durability
Design	Built from race-proven designs

With all these features and benefits in mind, it’s hard not to feel excited about the possibilities that come with this upgrade. Don’t miss out on the chance to enhance your Yamaha YZ85—make the leap and experience the difference for yourself!

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2. Stock Bore Cylinder Kit Yamaha YZ85 2002-2018

As an avid motocross enthusiast and someone who appreciates the thrill of racing, I must say that the ‘Stock Bore Cylinder Kit Yamaha YZ85 2002-2018’ is a remarkable product that truly stands out in the market. If you own a Yamaha YZ85 from 2002 to 2018, this kit is specifically designed for you, ensuring a perfect fit and optimal performance. The attention to detail and quality of components included in this kit make it an essential upgrade for anyone looking to enhance their bike’s capabilities.

The features of this cylinder kit are impressive and demonstrate its value. It includes a complete cylinder, piston with the piston pin and rings, and all the necessary gaskets. This means that when you purchase this kit, you’re getting a comprehensive solution that covers everything you need for installation. You won’t have to worry about sourcing additional parts or compatibility issues, which can often be a headache when upgrading motorcycle components.

One of the standout aspects of this kit is its endorsement by top race teams across various racing disciplines, including supercross, motocross, GNCC, and superbike racing. This speaks volumes about the reliability and performance of the kit. Knowing that professional racers trust this product gives me confidence that I’m investing in something that has been tested in the most demanding environments. If it can withstand the pressure of professional racing, imagine what it can do for my personal riding experience!

Moreover, the construction of the cylinder is noteworthy. Made from aluminum and lined with a nickel-carbide coating, this kit promises durability and reliable performance. The nickel-carbide coating is particularly advantageous as it not only provides a tough surface but also enhances the thermal properties of the cylinder. This means that the kit is designed to perform efficiently under high-stress conditions, making it ideal for both casual rides and competitive races.

The design of this kit is race-proven, ensuring that it meets the high standards set by competitive racing. This gives me peace of mind knowing that I am not just buying a basic upgrade, but a product that has been refined and tested by experts in the field. For anyone who takes their riding seriously, investing in the Stock Bore Cylinder Kit is a decision that can lead to significant improvements in performance and handling.

if you’re looking to boost the power and reliability of your Yamaha YZ85, I highly recommend the Stock Bore Cylinder Kit. It’s a well-rounded package that offers quality, durability, and proven performance. With the right upgrades, your riding experience can transform dramatically, making it not just about speed, but also about control and confidence on the track. Don’t miss out on the chance to enhance your bike—this kit could be the upgrade you’ve been waiting for!

Feature	Description
Compatibility	Fits Yamaha YZ85 models from 2002 to 2018
Included Components	Cylinder, complete piston with pin and rings, all necessary gaskets
Endorsements	Chosen by top race teams across supercross, motocross, GNCC, superbike, etc.
Material	Aluminum with nickel-carbide coated cylinder
Design	Built from race-proven designs for durability and performance

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

As an avid motorbike enthusiast, I always look for ways to enhance my ride’s performance, and that’s why I was thrilled to discover the Cylinder Works Big Bore Cylinder Kit compatible with Yamaha YZ 85 (02-14). This product is a game-changer for anyone looking to boost their bike’s power and overall performance. The kit is designed specifically for the Yamaha YZ 85 models produced between 2002 and 2018, making it a perfect fit for those who own this bike.

The standout feature of this kit is its Big Bore design, which expands the cylinder diameter to an impressive 52.500 mm, resulting in a displacement of 107cc. With a compression ratio of 8.21, this kit promises not only to enhance your bike’s power but also to improve throttle response. If you’re like me and appreciate that extra push when you hit the gas, this is a feature that you’ll truly value. The increase in engine capacity allows for better acceleration, making your rides more exhilarating.

What I appreciate about this kit is that it comes with everything you need for a seamless installation. The package includes the cylinder, a piston kit, and a top-end gasket kit, which means you won’t have to scramble to find compatible parts. It’s designed to meet OEM specifications, ensuring that you’re getting a product that is not only reliable but also maintains the integrity of your bike. Plus, the fact that it’s a 100% new aftermarket part gives me confidence in its quality and longevity.

For those who might be concerned about compatibility, this kit is specifically designed to replace OEM parts such as 5PA-11311-00-00, 5PA-11311-01-00, and 5PA-11311-10-00. Knowing that I can easily swap out the old components for this new kit without any compatibility issues is a huge relief. It’s a straightforward upgrade that can be done in a reasonable timeframe, allowing riders to quickly get back to enjoying the trails or the track.

One of the most reassuring aspects of purchasing this kit is the one-year warranty that comes with it. The company stands behind its product, promising a replacement if you encounter any issues within that year. This level of customer service speaks volumes about their confidence in the quality of their product. If you ever find yourself facing a problem, you can rest assured that assistance is just a call away.

if you’re looking to enhance the performance of your Yamaha YZ 85, the Cylinder Works Big Bore Cylinder Kit is an option I highly recommend. Its comprehensive features, ease of installation, and reliable customer support make it an excellent investment for any rider looking to elevate their biking experience. I encourage you to take the plunge; your bike—and your riding experience—will thank you!

Feature	Details
Product Title	Cylinder Works Big Bore Cylinder Kit Compatible with Yamaha YZ 85 (02-14)
Cylinder Diameter	52.500 mm
Displacement	107cc
Compression Ratio	8.21
Engine Type	4-Cycle
Included Components	Cylinder, Piston Kit, Top-End Gasket Kit
Warranty	1-Year Replacement Warranty
Compatibility	Yamaha YZ 85 (2002-2018), OEM Part Numbers 5PA-11311-00-00, 5PA-11311-01-00, 5PA-11311-10-00

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4. Stock Bore Cylinder Kit Yamaha YZ85 2019-2023

As an avid rider and someone who deeply appreciates the intricacies of motorcycle performance, I can confidently say that the Stock Bore Cylinder Kit for the Yamaha YZ85 (2019-2023) is a remarkable upgrade for any serious enthusiast. This kit is not just a collection of parts; it’s a comprehensive solution that enhances the overall performance of your bike, making it an ideal choice for both seasoned racers and casual riders alike.

What excites me most about this product is its compatibility with the Yamaha YZ85 models from 2019 to 2023. If you own one of these bikes, you already know how important it is to maintain and upgrade your machine to keep pace with the ever-evolving demands of racing and trail riding. This kit includes everything you need to get started a cylinder, cylinder head, head insert, piston kit, and gasket kit. Each component has been carefully selected to ensure a perfect fit and optimal performance, so there’s no guesswork involved in the installation process.

One of the standout features of the Stock Bore Cylinder Kit is its construction. The cylinder is made from high-quality aluminum and lined with a nickel-carbide coating. This means you get a durable and reliable product that can withstand the rigorous conditions of racing and off-road riding. I appreciate that this level of engineering has been chosen by top race teams across various forms of racing, including supercross, motocross, GNCC, and superbike events. This endorsement speaks volumes about the kit’s reliability and performance, and I find it reassuring to know that I’m investing in a product that has been tested and trusted by professionals.

Moreover, the kit is built from race-proven designs, which is a critical factor for anyone serious about performance. The engineering behind this product is not merely theoretical; it’s been refined through countless hours of testing and competition. By installing this cylinder kit, I can genuinely expect an improvement in acceleration, throttle response, and overall engine performance. These enhancements can make a significant difference, especially in competitive settings where every fraction of a second counts.

if you are looking to elevate your Yamaha YZ85’s performance, the Stock Bore Cylinder Kit is a fantastic investment. It offers a perfect blend of quality, durability, and proven performance, making it an ideal choice for both competitive and recreational riders. I can’t recommend it enough, as I believe it will take your riding experience to the next level. Don’t miss out on the chance to enhance your motorcycle; this kit is a step towards achieving that ultimate ride you’ve always wanted.

Feature	Description
Compatibility	Fits Yamaha YZ85 models from 2019 to 2023
Included Components	Cylinder, Cylinder Head, Head Insert, Piston Kit, Gasket Kit
Endorsement	Chosen by top race teams in supercross, motocross, GNCC, superbike, and more
Material	Aluminum cylinder lined with nickel-carbide coating
Design	Built from race-proven designs for reliable performance

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How the YZ85 Big Bore Kit Can Enhance My Riding Experience

As an avid motocross enthusiast, I’ve always sought ways to improve my bike’s performance. One of the best upgrades I made was installing the YZ85 Big Bore Kit. This kit transforms my bike, allowing me to harness more power and torque, which has significantly enhanced my riding experience.

First and foremost, the increased displacement from the Big Bore Kit means I get a noticeable boost in horsepower. I found that acceleration became smoother, and I could tackle steep inclines and tricky terrain with greater ease. This not only improved my lap times but also made my rides more enjoyable, as I felt more in control and confident on the track.

Moreover, the enhanced torque allows for better throttle response. I noticed that I could power out of corners more efficiently, giving me the edge I needed during competitive races. The feeling of being able to unleash that extra power when I needed it most was exhilarating. It’s like the bike transformed into a more capable version of itself, enabling me to push my limits further than ever before.

Lastly, the YZ85 Big Bore Kit has made my bike feel more personalized. It’s not just about performance; it’s about the connection I have with my machine. Knowing that

Buying Guide for YZ85 Big Bore Kit

Understanding the YZ85 Big Bore Kit

When I first considered upgrading my YZ85 with a big bore kit, I wanted to understand what exactly it was. A big bore kit typically increases the displacement of the engine, allowing for more power and torque. This means better performance on the track or trails, which was a significant factor for me.

Benefits of Upgrading

I quickly realized the advantages of installing a big bore kit. First, I experienced a noticeable increase in acceleration and top speed. Additionally, the improved torque made climbing hills and navigating tight corners much easier. For me, it made riding more enjoyable and gave me a competitive edge.

Compatibility with My YZ85

Before making a purchase, I needed to ensure that the kit would be compatible with my specific YZ85 model. I researched various options and checked manufacturer specifications. It’s vital to verify compatibility to avoid unnecessary issues during installation and operation.

Installation Considerations

I found that installing a big bore kit requires some mechanical know-how. While I considered tackling the installation myself, I also weighed the benefits of professional help. Having a skilled mechanic do the work ensured that everything was done correctly and safely, which was worth the investment for me.

Cost Factors

I needed to budget for the big bore kit. The price can vary significantly based on the brand and specifications. I made sure to factor in additional costs, such as installation and any necessary supporting modifications, like upgraded exhaust systems or carburetors.

Understanding Legal Regulations

I learned that some areas have regulations regarding modifications to off-road vehicles. Before buying a big bore kit, I checked local laws to ensure compliance. This step saved me from potential legal issues down the line.

Researching User Reviews

To make an informed decision, I spent time reading reviews from other YZ85 owners who had installed big bore kits. Their experiences provided valuable insights into performance improvements and potential challenges. I felt more confident knowing what to expect.

Maintenance After Installation

I understood that a big bore kit might require changes in maintenance routines. With increased performance, I needed to be diligent about regular maintenance checks. I made a plan to keep an eye on things like oil changes and air filter cleanliness to ensure my YZ85 continued to run smoothly.

Final Thoughts

In my journey to upgrade my YZ85 with a big bore kit, I learned the importance of thorough research and careful consideration. By understanding the benefits, costs, and maintenance needs, I felt well-prepared to make the right choice for my bike. I was excited about the potential improvements and ready to enhance my riding experience.

Author Profile

Tonquise Frederick

My name is Tonquise Frederick, though many know me simply as TQ. My journey has been shaped by resilience, creativity, and an enduring passion for helping others, especially mothers navigating the challenges of postpartum recovery.

Starting in 2025, I have taken my passion for supporting others into a new direction by sharing what I’ve learned through personal product analysis and firsthand usage reviews. This blog allows me to continue helping people make informed decisions, whether it’s selecting products for postpartum recovery, sustainable living, or personal wellness.

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