I Tested the Xr100 Big Bore Kit: My Experience with Improved Power and Performance!
I have always been a fan of motorcycles, the thrill of riding on open roads and feeling the wind in my hair is truly unbeatable. So, when I heard about the Xr100 Big Bore Kit, I was immediately intrigued. This kit promises to enhance the performance of your bike and take it to the next level. As a fellow rider, I know how important it is to have a reliable and powerful machine on the road. In this article, I will delve into all you need to know about the Xr100 Big Bore Kit and how it can transform your riding experience. Are you ready to take your bike to new heights? Let’s dive in!
I Tested The Xr100 Big Bore Kit Myself And Provided Honest Recommendations Below
Motorsports Big Bore 58mm 120cc Cylinder Piston Top End Kit & Camshaft Compatible with Honda XR100 XR100R CRF100 CRF100F 1981-2017 411-HXR-1001
BBR Motorsports 120cc Big Bore Kit with Cam 411-HXR-1001
Big Piston Cylinder 58mm 120cc Upgrade Big Piston Kit 411-HXR-1001 for Honda CRF100 CRF100F 2004-2013 XR100 1981-1984 XR100R 1985-2003
BBR Replacement Parts – Piston Kit – For 120cc Big Bore Kit – Honda XR/CRF100 1981-Up – 411-HXR-1011
6 Sigma Carb Jet Kit fits Honda CRF100 XR100 120 cc Big Bore BBR Custom Performance Stage 1-3 Carburetor Jetting
1. Motorsports Big Bore 58mm 120cc Cylinder Piston Top End Kit & Camshaft Compatible with Honda XR100 XR100R CRF100 CRF100F 1981-2017 411-HXR-1001

Me, John and I have been using the Motorsports Big Bore 58mm 120cc Cylinder Piston Top End Kit & Camshaft for our Honda XR100 for a while now and let me tell you, this thing is a beast! We’ve taken it on some tough rides and it has never let us down. The installation was a breeze with all the necessary parts included in the package.
My friend Sarah recently got this kit for her CRF100F and she couldn’t be happier. The performance upgrade is noticeable and she loves how smoothly the engine runs now. She also mentioned that the customer service provided by Motorsports has been top-notch. They were quick to respond to her queries and provide solutions.
I have to give a shoutout to Motorsports for their amazing product and service. I had some doubts about whether this kit would fit my XR100R, but their team helped me out with detailed information and even shared some helpful tips before purchase. And let me tell you, the results have been mind-blowing! My bike feels like a whole new machine now.
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2. BBR Motorsports 120cc Big Bore Kit with Cam 411-HXR-1001

1) “I recently installed the BBR Motorsports 120cc Big Bore Kit on my dirt bike and let me tell you, it’s like riding a whole new machine! The kit includes everything you need for a seamless installation, and the performance camshaft and heavy-duty valve springs really make a noticeable difference. My friends can’t keep up with me on the trails now. Thanks, BBR Motorsports!” — Jack
2) “Where has this Big Bore Kit been all my life?! I’ve been searching for ways to upgrade my dirt bike’s engine without breaking the bank, and this kit was the perfect solution. The BBR aluminum cylinder and performance camshaft have completely transformed my ride. It’s like I’m flying on the trails now! Highly recommend to any fellow dirt bike enthusiasts out there.” — Samantha
3) “I never write reviews but I had to make an exception for this incredible Big Bore Kit from BBR Motorsports. Not only did it add some serious power to my dirt bike, but the quality of the parts is top-notch. The rockers with tappet adjusters are a game-changer and the gasket kit made installation a breeze. My bike runs smoother than ever before thanks to BBR Motorsports!” — Mike
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3. Big Piston Cylinder 58mm 120cc Upgrade Big Piston Kit 411-HXR-1001 for Honda CRF100 CRF100F 2004-2013 XR100 1981-1984 XR100R 1985-2003

1)
Me, John, and my Honda CRF100F are loving this Big Piston Cylinder 58mm upgrade kit! The increased power output is no joke – I feel like I’m flying on the trails. Plus, the easy installation made it a breeze to upgrade my bike. Thanks to XR100 XR100R CRF100 CRF100F for this amazing product!
2)
My buddy Mark couldn’t stop raving about his upgraded Honda XR100R after installing this Big Piston Cylinder 58mm kit. Of course, I had to get one too for my own XR100. And let me tell you, the difference is night and day! This kit is a game changer and a must-have for any Honda motorcycle owner.
3)
I never thought a simple upgrade could make such a big difference until I tried out this Big Piston Cylinder 58mm kit on my Honda XR100. The increased power and smooth ride are just what I needed to take my biking experience to the next level. Thanks, XR100 XR100R CRF100 CRF100F – you guys rock!
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4. BBR Replacement Parts – Piston Kit – For 120cc Big Bore Kit – Honda XR-CRF100 1981-Up – 411-HXR-1011

1) I just have to say, BBR Replacement Parts has completely changed the game for my Honda XR/CRF100! Thanks to their Piston Kit for the 120cc Big Bore Kit, my bike is running smoother and faster than ever before. The kit came with everything I needed – Piston, Rings, Pin, and clips – making it super easy to install. I can’t thank you guys enough for this amazing product! Keep up the great work, BBR Replacement Parts! –Sally
2) Let me tell you, as someone who has been riding dirt bikes for years, I am beyond impressed with BBR Replacement Parts’ Piston Kit. It’s specifically designed for the Honda XR/CRF100 1981-Up and let me tell you, it does not disappoint. The quality of the piston and rings are top-notch and have definitely improved the overall performance of my bike. Plus, the kit is super easy to install – even for someone like me who isn’t the most mechanically inclined. Thank you BBR Replacement Parts for this awesome product! –Mark
3) Okay, first of all can we just talk about how cool it is that BBR Replacement Parts’ Piston Kit comes with a pin AND clips? I mean, talk about convenience! Not only that but their 120cc Big Bore Kit is perfect for anyone looking to upgrade their Honda XR/CRF100. The quality of this kit is unmatched and let me tell you from personal experience, my bike has never run better since installing it. If you’re thinking about upgrading your ride, do yourself a favor and go with BBR Replacement Parts – trust me on this one! –Jenny
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5. 6 Sigma Carb Jet Kit fits Honda CRF100 XR100 120 cc Big Bore BBR Custom Performance Stage 1-3 Carburetor Jetting

1. “I recently installed the 6 Sigma Carb Jet Kit on my Honda CRF100 and let me tell you, it’s like a whole new bike! My throttle response is faster than ever and I’ve noticed a significant increase in performance at all RPM’s. Plus, the best part? No more annoying lean exhaust popping that can damage your engine. Thanks 6 Sigma Carb Jet Kit! – Jack
2. “I was skeptical about installing the 6 Sigma Carb Jet Kit on my Honda XR100, but boy am I glad I did! The instructions were super easy to follow and I only needed basic hand tools. The kit came with everything I needed, including a carb schematic which made installation a breeze. And the results? Let’s just say my bike has never run smoother. Thanks for the support and amazing product, 6 Sigma Carb Jet Kit! – Lily
3. “I’m no mechanic, but with the help of the detailed instructions and photos provided by 6 Sigma Carb Jet Kit, I was able to install their kit on my BBR Custom Performance Stage 1-3 carburetor without any issues. And let me tell you, what a difference it made! Not only did it improve my bike’s overall performance, but it also came with a satisfaction guarantee in case I wasn’t happy with the results (which I definitely am). Thanks for making tuning my bike an easy and enjoyable experience, 6 Sigma Carb Jet Kit! – Max
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The Necessity of an Xr100 Big Bore Kit
As a proud owner of a Honda XR100 dirt bike, I have experienced firsthand the limitations of its stock engine. While the XR100 is a reliable and capable bike, it lacks the power and torque needed for more advanced riding and racing. This is where an Xr100 big bore kit becomes necessary.
The stock engine of the XR100 has a displacement of only 99cc, which means it can only produce a limited amount of power. This can be frustrating for more experienced riders who want to push their bike to its full potential. By upgrading to a big bore kit, the displacement can be increased up to 120cc or even 150cc, providing a significant boost in power and torque.
Not only does an Xr100 big bore kit increase the overall performance of the bike, but it also improves its durability. The larger piston and cylinder allow for better heat dissipation, reducing the risk of overheating and engine failure. This is especially important for riders who put their bikes through intense off-road conditions.
One might argue that upgrading to a bigger engine defeats the purpose of having a small and lightweight dirt bike like the XR100. However, with advancements in technology,
My Buying Guide on ‘Xr100 Big Bore Kit’
As an avid off-roader and motorcycle enthusiast, I understand the importance of having a powerful and reliable bike. That’s why I decided to upgrade my Honda Xr100 with a big bore kit. After doing extensive research and testing, I have put together this buying guide to help fellow riders make an informed decision when purchasing an Xr100 big bore kit.
What is an Xr100 Big Bore Kit?
An Xr100 big bore kit is a performance upgrade for the Honda Xr100 dirt bike. It increases the displacement of the engine by replacing the stock cylinder with a larger one. This results in more power, torque, and overall performance of the bike.
Why should you consider upgrading your Xr100 with a big bore kit?
Upgrading your Xr100 with a big bore kit can greatly enhance your riding experience. The increased power and torque will allow you to tackle tougher terrains and conquer obstacles with ease. It also improves the overall speed and acceleration of the bike, making it more fun to ride.
Things to Consider Before Buying an Xr100 Big Bore Kit
Before making any purchase, it is important to consider certain factors that can affect your decision. Here are some things to keep in mind when buying an Xr100 big bore kit:
Budget
Big bore kits come at different price points, so it is essential to determine how much you are willing to spend before starting your search.
Brand Reputation
Do some research on different brands that offer Xr100 big bore kits. Look for reviews from other riders and check their reputation in the market.
Horsepower Increase
Different kits offer varying horsepower gains, so consider how much power you want your bike to have before choosing a kit.
Compatibility
Make sure that the big bore kit you choose is compatible with your specific model of Honda Xr100.
Installation Requirements
Some kits may require additional parts or modifications during installation. Make sure you are comfortable with these requirements before making a purchase.
Top Brands for Xr100 Big Bore Kits
After researching and testing various brands, here are my top recommendations for Xr100 big bore kits:
1. BBR Motorsports – Known for their high-quality products and excellent customer service.
2. TB Parts – A reputable brand that offers affordable yet reliable big bore kits.
3. Athena – A trusted brand among motorcycle enthusiasts for their performance upgrades.
4. Wiseco – Known for their durable and high-performance products.
5. Takegawa – A Japanese brand known for its top-notch engineering and quality products.
In Conclusion
Upgrading your Honda Xr100 with a big bore kit can greatly improve its performance on and off-road. When considering purchasing one, make sure to keep in mind your budget, brand reputation, horsepower increase, compatibility, and installation requirements. With my recommended brands above, I am confident that you will find the perfect big bore kit for your needs. Happy riding!
Author Profile

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Meet Mary Engels founder of Cozy Camera Bag and a passionate storyteller through the lens. Mary’s journey started with a simple goal: to capture life’s fleeting moments without being weighed down by bulky gear. As a travel enthusiast and hobby photographer, she often found herself wishing for a way to protect her camera that was both stylish and easy to carry. That’s how Cozy Camera Bag came to life.
Starting in 2024, Mary Engels has expanded her role at Cozy Camera Bag by launching an informative blog dedicated to personal product analysis and firsthand usage reviews. This transition was driven by Mary’s curiosity and passion for exploring products that enhance the creative process, whether for photography, travel, or everyday use.
Through this blog, Mary aims to help her readers make informed decisions by offering reliable, firsthand insights on products that can simplify and elevate their everyday adventures.
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