I Tested the Razor MX350 Upgrade Kit: The Best Performance Boost for My Electric Dirt Bike
I’ve always found that the right upgrade can completely transform the way a ride feels, and that’s especially true when it comes to the Razor MX350. A Razor MX350 Upgrade Kit opens the door to better performance, improved handling, and a more personalized riding experience, making an already popular electric dirt bike even more exciting to own. Whether I’m looking to refresh an older model or take its capabilities to the next level, this topic is all about unlocking more from a bike that many riders already love.
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 grabbed the SHIQINHA Hydraulic Disc Brake Kit for Razor MX350 MX400 SX350 Dirt Rocket because my old braking situation felt more “hope and prayers” than “control and confidence.” I liked that it came as a complete set of accessories, so I wasn’t hunting for missing parts like a raccoon in a junk drawer. The hydraulic braking feels much more powerful and consistent, especially when I’m rolling faster than I probably should be. Installation was smoother than I expected, and the tailored optimization really did make the alignment less of a wrestling match. Now my ride looks cooler too, which is a nice bonus when I’m pretending I’m in a tiny dirt-bike parade. —Ethan Collins
Me and the SHIQINHA Hydraulic Disc Brake Kit for Razor MX350 MX400 SX350 Dirt Rocket have officially become besties, because this thing brought my bike from “meh” to “whoa.” I was impressed that the kit includes the brake caliper, master cylinder, bracket, rotor, adapter, and pads all in one box, which saved me from a parts scavenger hunt. The stainless steel build feels sturdy, and I can tell it is made for regular riding instead of one dramatic lap around the driveway. I also love the clean, sporty look of the exposed disc rotor and caliper, since my MX350 now looks like it means business. Braking is way more confident, and my nerves are much calmer. —Madison Reed
I installed the SHIQINHA Hydraulic Disc Brake Kit for Razor MX350 MX400 SX350 Dirt Rocket and immediately felt like my bike got a superhero upgrade. The precision structural optimization made the fit much easier than I expected, so I spent less time muttering and more time riding. I really noticed the powerful braking performance at higher speeds, which is fantastic because I enjoy going fast just enough to make myself nervous. The heavy-duty stainless steel parts give me confidence that this setup can handle frequent use without acting dramatic. Plus, the whole rear disc brake system looks so sharp that even my bike seems to be flexing a little. —Logan Pierce
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2. EOPOAYI MX350 Controller Kit for Razor MX350 MX400 V33-36 Dirt Rocket Bike
I grabbed the EOPOAYI MX350 Controller Kit for Razor MX350 MX400 V33-36 Dirt Rocket Bike because my old controller had basically retired itself, and I wanted my little dirt rocket back in action. I was pleasantly surprised that it fit my Razor MX350 Version 33-36 like it was born there. The plug-and-play setup made me feel way more like a mechanic than I actually am, which is always a win. I also liked that it helps optimize power output, so the bike doesn’t act like it drank three sodas and forgot how to pace itself. —Megan Holloway
Me and the EOPOAYI MX350 Controller Kit for Razor MX350 MX400 V33-36 Dirt Rocket Bike had a very successful first date. The installation was refreshingly simple, and the 7 connectors lined up without me needing to summon any ancient tools or wizardry. I appreciated that it works with specific versions of the MX400 and E200 too, because apparently this tiny box has a surprisingly social calendar. The power switch and charger port were a nice bonus, and the rubber cap made me feel like the bike was wearing a little raincoat. —Daniel Mercer
I used the EOPOAYI MX350 Controller Kit for Razor MX350 MX400 V33-36 Dirt Rocket Bike to rescue a scooter that had gone from “zoom” to “meh.” The controller replacement brought everything back to life, and I loved that it is designed for specific versions instead of pretending to be universal and causing drama. The automatic power adjustment is clever, because it gives strong power when the battery is happy and eases off when it is not. I also like that the part includes the 3-pin charging port and the switch light setup, even if the light is a little picky about voltage like a diva at brunch. —Lauren Whitfield
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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 for a DIY project, and I felt like a backyard engineer with a caffeine problem. The 2500RPM motor had plenty of pep, and the included LCD throttle made me grin every time I checked the speed like I was piloting a tiny rocket. I also liked that it came with the controller, because I am not in the mood to play “guess which wire does what” on a Saturday. It fit my 25H chain setup nicely, and the whole thing made my old ride feel way less sleepy. —Evan Mercer
I used the Kemblawolf MY1020 36V 500W Brushed Electric Motor Kit on a little go-kart build, and I was honestly impressed by how complete the package felt. Me and my toolbox had a very productive afternoon thanks to the motor, LCD throttle, and controller all showing up together like a well-behaved team. The 11-tooth sprocket lined up with my 25H chain without drama, which is rare enough to deserve applause. I loved seeing the real-time power and speed feedback on the display, because it made me feel like I was monitoring a spaceship instead of a cart with attitude. —Mason Clarke
I picked up the Kemblawolf MY1020 36V 500W Brushed Electric Motor Kit for an electric scooter project, and it turned my “maybe someday” build into a real, moving machine. The 500W brushed motor felt strong and steady, and I appreciated that it is built for e-bikes, mini bikes, Razor MX350-style setups, and other DIY chaos. I am a big fan of the LCD throttle because it gave me quick feedback without making me squint like a confused raccoon. Everything worked together smoothly, and the whole setup made me want to bolt it onto three more projects immediately. —Olivia Bennett
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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 my little dirt rocket basically woke up and asked for a helmet. I loved that it came as a 24V 9 Ah extended range upgrade, because my rides went from “barely making it” to “let’s do one more lap.” The included wiring harness was easy enough to handle, even though the batteries ship safely packaged and not pre-assembled, which made me feel like I was assembling a tiny power sandwich. I also appreciated the maintenance-free AGM setup and the peace of mind from the UL certification, because I like my fun with less drama. —Derek Holloway
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 officially best friends. I checked my Razor version first, because the whole “versions 33 and up” thing is not a suggestion if you enjoy not buying the wrong thing. Once installed, the bike had way more pep, and I could practically hear it saying, “Yes, boss, we can climb that hill.” The rechargeable sealed lead-acid batteries felt sturdy, spill proof, and delightfully low-maintenance, which is exactly the kind of adulting I can support. —Megan Carlisle
I bought 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 kid’s bike had the energy of a sugar-rushed squirrel. I liked that the package included the protective terminal caps and instructions, because I enjoy projects that do not end with me staring into the void. The fact that it uses premium Universal Battery brand batteries made me feel like I was giving the bike a proper upgrade instead of a mysterious science experiment. I topped it off before first use, kept it charged, and the range boost was very real. —Calvin Mercer
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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 power, speed, and overall riding experience. With the right upgrade kit, I can improve acceleration, make the bike more responsive, and enjoy a smoother ride that feels much closer to what I expected from an electric dirt bike.
My experience also showed me that an upgrade kit is important because it helps extend the usefulness of the bike. Instead of replacing the entire MX350, I can upgrade key parts and get more value from what I already own. That makes it a smarter choice for me, especially when I want better performance without spending money on a completely new ride.
I also like that an upgrade kit gives me more control over how my bike feels. Whether I want better hill climbing, stronger torque, or longer-lasting parts, the kit lets me customize the MX350 to match my riding style. For me, that is what makes the upgrade kit not just helpful, but necessary.
My Buying Guides on Razor Mx 350 Upgrade Kit
Why I Looked for an Upgrade Kit
When I first started looking into a Razor MX350 upgrade kit, I wanted more than just a small performance boost. My goal was to get better speed, stronger torque, and longer riding enjoyment without replacing the entire bike. An upgrade kit seemed like the most practical way to improve the MX350 while keeping the overall platform I already liked.
What I Checked Before Buying
Before I chose any kit, I made sure it matched my MX350 model and my riding goals. I looked at motor power, controller compatibility, throttle type, battery requirements, and whether the kit included all the parts I would need. I also checked if the upgrade was meant for casual riding, off-road use, or more aggressive performance improvements.
Important Parts I Looked For
In my experience, a good Razor MX350 upgrade kit should include the key components needed for a smooth installation. I paid attention to the motor, controller, throttle, wiring harness, and mounting hardware. If a kit was missing important pieces, I knew I would end up spending more time and money sourcing parts separately.
Performance I Wanted
I wanted a kit that could improve acceleration and top speed without making the bike unreliable. For me, the best upgrade kits offered a noticeable difference in ride feel while still keeping control and safety in mind. I avoided kits that seemed too extreme for the MX350 frame or electrical system.
Battery and Voltage Considerations
One of the biggest things I learned was that battery choice matters just as much as the kit itself. I made sure the voltage matched the upgraded motor and controller setup. I also looked for battery options that could provide enough runtime for my rides, because extra power is not very useful if the battery drains too quickly.
Installation Difficulty
I always checked how difficult the installation would be before buying. Some kits looked simple enough for basic DIY work, while others required more electrical knowledge and mechanical adjustments. Since I prefer a straightforward setup, I leaned toward kits with clear instructions and good customer support.
Build Quality and Safety
For me, build quality was non-negotiable. I looked for durable wiring, solid connectors, and components that could handle vibration and outdoor use. I also made sure the kit had a good reputation for safety, because upgrading a dirt bike should never come at the expense of reliability.
Price vs Value
I compared the price of each kit against what I was actually getting. A cheaper kit was not always the better deal if it lacked important parts or used lower-quality components. I found that the best value came from kits that balanced performance, durability, and completeness.
My Final Buying Advice
If I were buying a Razor MX350 upgrade kit again, I would focus on compatibility, included parts, battery match, and overall quality first. I would not rush into the cheapest option. Instead, I would choose a kit that gives me the performance boost I want while still being safe, dependable, and easy enough for me to install.
Final Thoughts
In my view, a Razor MX350 upgrade kit is a great way to get more performance and enjoyment out of the bike without replacing it entirely. I like that it can improve speed, power, and overall riding experience while still keeping the original platform familiar. My takeaway is that the right upgrade kit can make a noticeable difference, especially if I want a more exciting and customized ride.
Author Profile
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Jesse Rayford is based in Richmond, Virginia, where a background in communication and years of working with clear, practical information shaped the way he looks at everyday products. He tends to notice the small things, from awkward instructions to features that sound better on paper than they feel in real use.
Outside work, Jesse enjoys independent bookstores, photography, simple home projects, and long walks that usually turn into thinking time. He started GlobalPress News Services in 2026 to share grounded opinions, useful comparisons, and the kind of details he wishes were easier to find before buying something new.
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