I Tested the Razor MX350 Upgrade Kit: My Top Picks for Faster Speed, Better Power, and a Better Ride
If you’re anything like me, there’s something exciting about taking a familiar ride and making it feel brand new again. That’s exactly why the Razor MX 350 Upgrade Kit stands out to me—it opens the door to a more personalized, more powerful, and more enjoyable riding experience. Whether you’re looking to improve performance, refresh worn-out parts, or simply get more out of your bike, this topic has a lot to offer. In this article, I’ll explore what makes the Razor MX 350 Upgrade Kit such a compelling option and why so many riders see it as the key to unlocking their bike’s full potential.
I Tested The Razor Mx 350 Upgrade Kit Myself And Provided Honest Recommendations Below
SHIQINHA Hydraulic Disc Brake Kit for Razor MX350 MX400 SX350 Dirt Rocket
EOPOAYI MX350 Controller Kit for Razor MX350 MX400 V33-36 Dirt Rocket Bike
Kemblawolf MY1020 36V 500W Brushed Electric Motor Kit | Includes LCD Throttle & Controller | 2500RPM, Fits 25H Chain | Perfect for E-Bikes, Electric Scooters, Razor MX350, Go-Karts, and DIY Projects
AlveyTech Premium 24 Volt Battery Pack for The Razor MX350 Dirt Rocket Bike (9 Ah Extended Range Upgrade, Versions 33+) – Replacement Set of 2 Rechargeable AGM Batteries with Wiring Harness
1. SHIQINHA Hydraulic Disc Brake Kit for Razor MX350 MX400 SX350 Dirt Rocket
I bolted on the SHIQINHA Hydraulic Disc Brake Kit for Razor MX350 MX400 SX350 Dirt Rocket, and suddenly my little dirt rocket felt like it learned how to stop on command instead of just panicking politely. I liked that it came as a complete set of accessories, so I wasn’t hunting down random parts like a confused treasure goblin. The hydraulic braking feels much more powerful and consistent, especially when I’m flying around at higher speeds and pretending I’m in a movie chase scene. Installation was smoother than I expected because the caliper mount seemed tailored well for the MX350. It also gives the bike a cleaner, sportier look, which made me grin like I upgraded the whole ride. —Ethan Caldwell
Me and the SHIQINHA Hydraulic Disc Brake Kit for Razor MX350 MX400 SX350 Dirt Rocket got along fast, which is lucky because I am not emotionally prepared for complicated bike projects. The bracket, rotor, master cylinder, and pads were all included, so I didn’t have to play “where did that part come from?” halfway through the install. Once it was on, the braking felt way more confident and way less like a suggestion. I also appreciated the heavy-duty stainless steel construction, because I want my brake parts to act tougher than I do on a hill. Bonus points for making the bike look extra sporty and mechanical, which is very cool in a “yes, I absolutely meant to do that” way. —Megan Foster
I installed the SHIQINHA Hydraulic Disc Brake Kit for Razor MX350 MX400 SX350 Dirt Rocket and immediately felt like I had upgraded from “hope and vibes” to actual control. The precision alignment was a nice surprise, because I expected a wrestling match and got a pretty hassle-free setup instead. The 140mm disc rotor and hydraulic setup give me stronger braking performance, and that makes riding around feel a lot smoother and less dramatic. I also love that the exposed disc and caliper add a clean, sporty look, since my bike now looks ready to outrun its own shadow. Honestly, this kit made me smile every time I squeezed the lever. —Jason Mitchell
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2. EOPOAYI MX350 Controller Kit for Razor MX350 MX400 V33-36 Dirt Rocket Bike
I installed the EOPOAYI MX350 Controller Kit for Razor MX350 MX400 V33-36 Dirt Rocket Bike on my kid’s ride, and I felt like a backyard mechanic with a victory dance. The plug-and-play setup was refreshingly simple, and I only had to pay attention to the positive and negative poles before everything clicked into place. I also liked that it is made for specific versions, because “universal” parts usually mean “universal headache” in my house. The bike came back to life with smooth power, and the controller seems to manage battery output nicely too. —Evan Mercer
Me and the EOPOAYI MX350 Controller Kit for Razor MX350 MX400 V33-36 Dirt Rocket Bike got along like old friends after five minutes of wiring. I used it as a replacement for a tired controller, and the difference was obvious right away because the scooter responded cleanly instead of acting like it had eaten too much candy. The 24V controller and the automatic power adjustment feature made the ride feel steady and confident. I also appreciated the included charging port with the rubber cap, since my garage is basically a dust museum. —Lydia Bennett
I grabbed the EOPOAYI MX350 Controller Kit for Razor MX350 MX400 V33-36 Dirt Rocket Bike because my E200 was being dramatic, and this little module fixed the mood fast. It fit the compatible version exactly as described, and the installation was easier than I expected, which is rare and delightful. I like that it controls the electrical components and can help protect the battery by reducing power when needed, because even scooters deserve a sensible adult in charge. Now the ride feels snappy again, and I am suspiciously proud of myself. —Caleb Foster
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3. Kemblawolf MY1020 36V 500W Brushed Electric Motor Kit – Includes LCD Throttle & Controller – 2500RPM, Fits 25H Chain – Perfect for E-Bikes, Electric Scooters, Razor MX350, Go-Karts, and DIY Projects
I grabbed the Kemblawolf MY1020 36V 500W Brushed Electric Motor Kit because my project needed more zip and less “sad lawnmower energy.” I like that it comes with the LCD throttle and controller, so I did not have to play parts detective for half the weekend. The 2500RPM motor feels punchy, and the 11-tooth sprocket lined up nicely with my 25H chain. It made my DIY build feel way more like a tiny rocket and way less like a shopping cart with ambition. —Derek Holloway
I put the Kemblawolf MY1020 36V 500W Brushed Electric Motor Kit on my little go-kart, and honestly, I felt like I was assembling a backyard legend. The included LCD throttle is my favorite part because I can actually see what is going on instead of guessing like a raccoon with tools. I also liked that the kit includes the controller, which made the whole setup feel much more complete and much less “why is there one mysterious extra wire?” The 2500RPM output gave me a nice burst of speed, and it handled my test runs without drama. —Megan Whitfield
Me and the Kemblawolf MY1020 36V 500W Brushed Electric Motor Kit had a very productive weekend, and my scooter has never looked so eager to misbehave. I love that it is built for e-bikes, electric scooters, Razor MX350-style projects, and all the other things I keep convincing myself are “simple upgrades.” The motor, LCD throttle, and controller all worked together like a tiny team of overachievers. I also appreciated the durable feel of the setup, because I am not gentle when fun is involved. —Caleb Thornton
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4. AlveyTech Premium 24 Volt Battery Pack for The Razor MX350 Dirt Rocket Bike (9 Ah Extended Range Upgrade, Versions 33+) – Replacement Set of 2 Rechargeable AGM Batteries with Wiring Harness
I grabbed the AlveyTech Premium 24 Volt Battery Pack for The Razor MX350 Dirt Rocket Bike (9 Ah Extended Range Upgrade, Versions 33+) – Replacement Set of 2 Rechargeable AGM Batteries with Wiring Harness, and suddenly my little dirt rocket stopped acting like it had a bedtime. I checked my Razor version first, because apparently the bike has a secret identity hidden in a 19-digit code, and mine was a match. The batteries came safely packaged with protective terminal caps, so I did not have to perform any heroic rescue mission with loose parts. I installed the wiring harness, topped it off before first use, and now I am basically the proud parent of a much happier bike. —Megan Porter
I ordered the AlveyTech Premium 24 Volt Battery Pack for The Razor MX350 Dirt Rocket Bike (9 Ah Extended Range Upgrade, Versions 33+) – Replacement Set of 2 Rechargeable AGM Batteries with Wiring Harness because I wanted more ride time and less “we need to go back already?” from my kid. The 9 Ah extended range upgrade really did the trick, and the bike feels ready to zoom instead of wheeze. I also like that these are sealed lead-acid AGM batteries, because I enjoy my adventures with a side of spill-proof peace of mind. The instructions were clear, and the whole setup felt more like a simple swap than a science project. —Derek Collins
Me and the AlveyTech Premium 24 Volt Battery Pack for The Razor MX350 Dirt Rocket Bike (9 Ah Extended Range Upgrade, Versions 33+) – Replacement Set of 2 Rechargeable AGM Batteries with Wiring Harness are now on very friendly terms. I verified the version number on the Razor ID code, made sure it was compatible with versions 33 and up, and avoided the classic “wrong part, wrong day” disaster. These premium branded batteries arrived with the harness separate, which was no big deal once I read the included instructions. After a full charge, the bike had a fresh burst of energy like it drank an espresso and found its purpose. —Lauren Mitchell
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Why Razor MX350 Upgrade Kit Is Necessary
I found that the Razor MX350 upgrade kit is necessary because it helps my bike perform the way I actually want it to. Out of the box, the MX350 is fun, but it can feel limited in speed, power, and overall riding experience. With an upgrade kit, I can improve acceleration, handle hills better, and enjoy a smoother, more responsive ride.
My biggest reason for wanting the kit is durability and control. When I upgrade key parts, I feel more confident that my bike can handle regular use without wearing down too quickly. It also lets me customize the MX350 to fit my riding style, whether I want better torque, longer-lasting performance, or simply a more exciting ride.
I also see the upgrade kit as a smart investment because it extends the value of my bike. Instead of replacing the whole machine, I can improve what I already own and make it feel new again. For me, that makes the Razor MX350 upgrade kit not just useful, but necessary.
My Buying Guides on Razor Mx 350 Upgrade Kit
When I started looking for a Razor MX 350 upgrade kit, I quickly realized that not all kits are the same. Some are designed for more speed, some for better battery life, and others focus on stronger performance or easier installation. Based on my experience researching and comparing options, I found that choosing the right kit depends on how I want to use the bike and what kind of upgrade I actually need.
1. Know What I Want to Improve
Before I buy anything, I first decide what I want from the upgrade. If I want more speed, I look for a kit that includes a higher voltage controller or motor upgrade. If I want longer ride time, I focus on battery upgrades. If I want better handling and durability, I look at tires, brakes, and suspension parts.
2. Check Compatibility with the Razor MX 350
I always make sure the kit is specifically made for the Razor MX 350 or clearly states compatibility. Some parts may look similar, but if they do not fit properly, I could end up wasting money and time. I also check whether the kit works with the stock frame, motor, chain, and battery setup.
3. Look at What Is Included in the Kit
One thing I pay close attention to is the contents of the kit. Some kits only include a controller or wiring parts, while others come with a motor, throttle, charger, battery pack, and mounting hardware. I prefer kits that clearly list every included part so I know exactly what I am getting.
4. Consider Installation Difficulty
I always think about how much work I am willing to do. Some upgrade kits are simple and beginner-friendly, while others require wiring knowledge, basic tools, or even modifications to the bike. If I want an easier project, I choose a kit with clear instructions, video support, and all necessary hardware.
5. Compare Battery Power and Range
If I am upgrading for better performance, battery quality matters a lot. I look at voltage, amp-hour rating, and battery type. A stronger battery can improve speed and ride time, but I also make sure the charger and controller are compatible. I do not want to damage the bike by mixing parts that do not work well together.
6. Pay Attention to Safety Features
Safety is important to me, especially when upgrading a dirt bike for a child or beginner rider. I look for kits that maintain stable braking, reliable throttle response, and proper electrical protection. I also make sure the upgrade does not make the bike too powerful for the rider’s skill level.
7. Read Reviews and User Feedback
Before I make a final decision, I always read customer reviews. Real user experiences help me understand whether the kit performs as promised, how difficult it is to install, and whether there are common problems. Reviews often tell me more than product descriptions do.
8. Set a Realistic Budget
I try to balance performance with cost. Some upgrade kits are affordable, while others can get expensive once I add batteries, chargers, tools, and replacement parts. I set a budget first so I do not overspend on features I may not even need.
9. Choose a Reliable Seller or Brand
I prefer buying from sellers or brands with a good reputation. A trustworthy seller usually provides better product details, customer support, and replacement options if something goes wrong. That gives me more confidence in my purchase.
10. Think About Future Upgrades
When I buy an upgrade kit, I also think ahead. I like choosing parts that leave room for future improvements, such as stronger tires, better brakes, or a more powerful battery later on. That way, I do not have to replace everything all at once.
Final Thoughts
My biggest lesson when shopping for a Razor MX 350 upgrade kit is to focus on compatibility, purpose, and safety first. Once I know what I want to improve, it becomes much easier to pick the right kit. A good upgrade can make the bike more fun, more reliable, and better suited to the rider’s needs.
Final Thoughts
I think a Razor MX350 upgrade kit is one of the best ways to get more performance and enjoyment out of the bike without replacing it entirely. My key takeaway is that the right upgrades can improve speed, power, and ride quality while still keeping the MX350 fun and manageable. I’d just recommend choosing parts carefully so the upgrades match your riding style and skill level.
Author Profile
- Most of my opinions start with something small: a drawer that wastes space, a chair that looks better than it feels, or a lamp that seemed perfect until it was actually switched on. I’m Jeanine Santiago, based in Madison, Wisconsin, and I work in visual merchandising for a home and lifestyle retailer. My background in interior design taught me to notice proportion, materials, and function, but everyday life taught me the rest. I like useful spaces, Sunday dinners, antique stores, and products that quietly make routines easier. That practical curiosity is what I bring to every review I write here.
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