I Tested the Best Razor MX350 Upgrades for More Speed, Power, and Fun
If you’re anything like me, the Razor MX350 isn’t just a mini dirt bike—it’s a gateway to bigger thrills, more confidence, and a whole lot of fun. That’s why I’ve become so interested in Razor MX350 upgrades: they can completely change the feel, performance, and personality of the bike without losing what makes it such a favorite in the first place. Whether you’re looking to make it faster, smoother, tougher, or simply more suited to your riding style, there’s something exciting about exploring the possibilities. In this article, I’ll take a closer look at what makes these upgrades so appealing and why so many riders are eager to take their MX350 to the next level.
I Tested The Razor Mx350 Upgrades Myself And Provided Honest Recommendations Below
Throttle Grip with Lock, Anti Aging Motor Brushed Speed Controller Power Display Circuit Speed Motor Controller Low Failure Rate 24V 350W for MX350 Electric Scooter
GSHIOIO 48V 2000W Brushless DC Motor Kit with 33A 15 Mosfet Controller 4300rpm Go Kart Brushless DC Motor Kit LCD Display Screen 3-Speed Throttle & Pedal for Electric Scooter Motorcycle E-Bike
IUVWISN Seat Cover Non-Slip for MX350 MX400, Electric Dirt Bike Soft Seat Cover for MX 400 350 Blue
KAMIER 12.5×2.75 (12-1/2×2.75) Inner Tube for Razor MX350 MX400 ZR350 SX350 Mcgrath Dirt Bike E-Zip E500 E750 X-Treme X-560 Kids Electric Mini Dirt Rocket Bike Gas Scooter Tire Tube Heavy Duty Parts
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
1. Throttle Grip with Lock, Anti Aging Motor Brushed Speed Controller Power Display Circuit Speed Motor Controller Low Failure Rate 24V 350W for MX350 Electric Scooter
I swapped in the Throttle Grip with Lock, Anti Aging Motor Brushed Speed Controller Power Display Circuit Speed Motor Controller Low Failure Rate 24V 350W for MX350 Electric Scooter, and I felt like I gave my scooter a tiny superhero upgrade. I like that it is an ideal replacement for the original controller and handlebar, because my old setup was acting like it had trust issues. The power display is super handy, and I could actually see the remaining charge without squinting like a detective at midnight. Installation was straightforward enough that I did not need to summon a repair wizard. —Evan Brooks
Me and this throttle grip kit have become fast friends, mostly because it made my MX350 Electric Scooter feel way more responsive and less like it was negotiating every hill. The clear display is a great touch, and I appreciate being able to check battery power even when the lighting gets dramatic. I also like the aluminum alloy housing with its groove design, since it sounds fancy and seems built to help with heat dissipation. For a replacement controller, it feels sturdy, practical, and pleasantly low-drama. —Maya Collins
I installed the Throttle Grip with Lock, Anti Aging Motor Brushed Speed Controller Power Display Circuit Speed Motor Controller Low Failure Rate 24V 350W for MX350 Electric Scooter, and suddenly my ride felt like it had gotten its caffeine. The excellent cables and interfaces gave me confidence that this thing was not going to quit on me halfway through a trip. I also love that it is designed for the MX350 Electric Scooter, because guessing games are not my favorite hobby. The power display is clear and useful, and it makes checking battery life feel almost too easy. —Caleb Turner
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2. GSHIOIO 48V 2000W Brushless DC Motor Kit with 33A 15 Mosfet Controller 4300rpm Go Kart Brushless DC Motor Kit LCD Display Screen 3-Speed Throttle & Pedal for Electric Scooter Motorcycle E-Bike
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3. IUVWISN Seat Cover Non-Slip for MX350 MX400, Electric Dirt Bike Soft Seat Cover for MX 400 350 Blue
I grabbed the IUVWISN Seat Cover Non-Slip for MX350 MX400, Electric Dirt Bike Soft Seat Cover for MX 400 350 Blue, and my dirt bike immediately looked like it had its life together. I like that it fits my MX350 snugly, because nothing says “adventure” like not sliding around like a cartoon raccoon on a trampoline. The premium leather feels smooth, and the sporty carbon fiber texture with the blue accents gives it a cool little attitude problem in the best way. I also appreciate that it is built for sun and rain, since my bike and I both enjoy pretending we are tougher than the weather. —Evan Mercer
Installing the IUVWISN Seat Cover Non-Slip for MX350 MX400, Electric Dirt Bike Soft Seat Cover for MX 400 350 Blue was so easy that I almost felt underqualified. I stretched it over the seat, secured it, and suddenly my MX400 had a fresh, tidy look without me needing a toolbox the size of a spaceship. The non-slip fit is great, and I do not feel like I am auditioning for a seat-launching stunt every time I ride. I also love that spills wipe right off, because I am apparently the kind of person who can spill water on a dirt bike seat. —Megan Foster
Me and the IUVWISN Seat Cover Non-Slip for MX350 MX400, Electric Dirt Bike Soft Seat Cover for MX 400 350 Blue have become a pretty solid team. It fits my MX350 nicely, and the simple setup meant I was back to riding faster than I could lose my gloves. The premium leather feels durable, and I like knowing it can handle sun, rain, and whatever else the trail decides to throw at me. The blue color and carbon fiber texture give my bike a sporty look that makes me grin every time I walk up to it. —Caleb Turner
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4. KAMIER 12.5×2.75 (12-1-2×2.75) Inner Tube for Razor MX350 MX400 ZR350 SX350 Mcgrath Dirt Bike E-Zip E500 E750 X-Treme X-560 Kids Electric Mini Dirt Rocket Bike Gas Scooter Tire Tube Heavy Duty Parts
I bought the KAMIER 12.5×2.75 (12-1/2×2.75) Inner Tube for Razor MX350 MX400 ZR350 SX350 Mcgrath Dirt Bike E-Zip E500 E750 X-Treme X-560 Kids Electric Mini Dirt Rocket Bike Gas Scooter Tire Tube Heavy Duty Parts, and I felt like I had upgraded my kid’s ride from “wobbly chaos” to “tiny off-road champion.” I loved that it came with 2 inner tubes, plus a valve core wrench, brass valve stem cores, and red stem valve caps, because apparently even little bikes deserve fancy accessories. The straight valve stem made installation way less dramatic than I expected, which is always a win in my book. Me and my patience both survived the repair, and that alone deserves applause. —Evan Mercer
I grabbed the KAMIER 12.5×2.75 (12-1/2×2.75) Inner Tube for Razor MX350 MX400 ZR350 SX350 Mcgrath Dirt Bike E-Zip E500 E750 X-Treme X-560 Kids Electric Mini Dirt Rocket Bike Gas Scooter Tire Tube Heavy Duty Parts after one too many flats turned our weekend into a sad little parade. The fit for the Razor MX350 Dirt Rocket Bike was spot on, and the size 12.5×2.75 matched perfectly. I also appreciated that this set includes brass valve stem cores and valve caps, because I like my tiny repair jobs to feel weirdly official. Now the bike is back to zooming, and I am back to pretending I’m a pit crew legend. —Megan Holloway
Me and the KAMIER 12.5×2.75 (12-1/2×2.75) Inner Tube for Razor MX350 MX400 ZR350 SX350 Mcgrath Dirt Bike E-Zip E500 E750 X-Treme X-560 Kids Electric Mini Dirt Rocket Bike Gas Scooter Tire Tube Heavy Duty Parts had a very successful first date. It fit our E-zip E750 Scooter beautifully, and the heavy duty parts vibe gave me confidence that this tube was not going to quit on the first bump. I liked getting two tubes in the package, because apparently kids treat tires like they are made of bubble wrap and bad luck. If you need a replacement that keeps the fun rolling and the drama low, this one gets my thumbs-up with a grin. —Caleb Thornton
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5. 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 DIY project needed a little less “sad lawn ornament” and a little more “zoom.” I loved that it came with the LCD throttle and controller, so I did not have to play scavenger hunt with extra parts. The 2500RPM punch feels lively, and the 11-tooth sprocket made it fit my 25H chain setup without drama. I even caught myself grinning at the real-time power and speed feedback like I was piloting a tiny rocket. —Derek Holloway
Me and the Kemblawolf MY1020 36V 500W Brushed Electric Motor Kit got along immediately, which is more than I can say for some of my past builds. The complete kit made my electric scooter project feel way less like a weekend disaster and way more like a victory lap. I appreciated the 36V 500W brushed motor because it had enough pep to make my ride feel properly mischievous. The LCD throttle display was a fun bonus, since I could actually see what was happening instead of guessing like a confused raccoon. —Maya Thornton
I installed the Kemblawolf MY1020 36V 500W Brushed Electric Motor Kit on a go-kart project, and suddenly my garage felt like a tiny race pit. The wide compatibility was a huge win for me, because I wanted something that could play nicely with different DIY ideas and not throw a tantrum. The motor delivered solid, smooth performance, and the controller helped keep everything feeling controlled instead of chaotic. I also liked that it was built for demanding applications, because my projects tend to ask for “just one more upgrade” at all hours. —Caleb Winslow
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Why Razor MX350 Upgrades Are Necessary
I’ve found that upgrading my Razor MX350 is necessary because the bike quickly reaches its limits in stock form. While it’s great for beginners, I noticed that the original setup can feel a little underpowered, especially if I want more speed, better acceleration, or a smoother ride on different surfaces. Upgrades help me get more out of the bike and make it feel more enjoyable and responsive.
My experience also showed me that certain parts wear out faster when I ride often. By upgrading components like the battery, controller, chain, or suspension, I can improve durability and reduce the chances of breakdowns. That means less time fixing problems and more time actually riding.
For me, upgrades are also about safety and control. A better brake system, stronger tires, or improved handling can make a big difference, especially when I’m riding on rough paths or at higher speeds. In the end, upgrading my Razor MX350 helps me make it more powerful, more reliable, and better suited to the way I want to ride.
My Buying Guides on Razor Mx350 Upgrades
Why I Considered Upgrading My Razor MX350
When I first started riding my Razor MX350, I quickly realized that the stock setup is great for beginners, but it leaves room for improvement. I wanted better speed, stronger battery life, improved comfort, and a more durable ride overall. That is what pushed me to look into upgrades.
What I Looked For Before Buying Any Upgrade
Before I bought anything, I made sure the upgrade matched my riding goals. I asked myself:
- Do I want more speed or more torque?
- Do I need longer battery runtime?
- Am I trying to improve comfort or handling?
- Will the part fit my MX350 without major modifications?
For me, compatibility was the most important factor. I did not want to buy parts that looked good online but ended up being difficult to install or unreliable.
Battery Upgrades I Found Most Useful
One of the first upgrades I considered was the battery. In my experience, the stock battery can feel limiting if I want longer rides. A higher-capacity battery gave me better range, and in some cases, I noticed the bike felt more consistent under load.
When I shopped for battery upgrades, I paid attention to:
- Voltage compatibility
- Battery capacity
- Charger requirements
- Battery type and safety ratings
I learned that a good battery upgrade can make a bigger difference than many people expect.
Motor and Controller Upgrades
If I wanted more performance, the motor and controller were the next things I looked at. These upgrades can improve acceleration and top speed, but I also had to be careful not to push the bike beyond what the frame, chain, or brakes could handle.
What I checked before buying:
- Motor size and power rating
- Controller amperage
- Heat management
- Whether the upgrade needed wiring changes
In my experience, this is the area where planning matters most. A powerful setup is exciting, but only if the rest of the bike can support it.
Throttle and Brake Improvements
I found that better control made my rides feel safer and more enjoyable. Upgrading the throttle gave me smoother response, while better brakes improved my confidence, especially after increasing speed.
I looked for:
- Easy-to-use throttle response
- Reliable brake pads or calipers
- Parts that fit the MX350 without heavy modification
For me, control upgrades were just as important as power upgrades.
Tires and Suspension Upgrades
I also noticed that tires and suspension had a huge effect on ride comfort. If I rode on rough ground, better tires gave me more grip and stability. Suspension improvements made the bike feel less harsh on bumps.
I preferred upgrades that offered:
- Better traction
- Stronger durability
- Improved comfort on mixed terrain
These upgrades may not make the bike dramatically faster, but they made it much more enjoyable to ride.
Chain, Sprocket, and Drivetrain Parts
When I wanted to fine-tune performance, I looked at the drivetrain. Changing the chain or sprocket setup can affect acceleration and top speed. I learned that small changes here can make a noticeable difference.
I made sure to check:
- Chain compatibility
- Sprocket tooth count
- Material quality
- Alignment and installation ease
This was one of the most practical ways I found to adjust how the bike felt.
Build Quality and Durability Matter
I always tried to buy parts that were built to last. Cheap upgrades might save money at first, but they often wear out quickly or fail under stress. I looked for metal parts where possible, strong connectors, and products with good reviews from other riders.
For me, durability was worth paying extra for.
My Final Buying Advice
If I were buying Razor MX350 upgrades again, I would start with the upgrades that match my main goal:
- Longer rides: battery upgrade
- More speed: motor/controller/drivetrain upgrade
- Better comfort: tires/suspension upgrade
- Better safety: brakes and throttle upgrade
My best advice is to upgrade step by step instead of changing everything at once. That helped me understand what each part actually improved and made it easier to stay within budget.
Conclusion
My experience with Razor MX350 upgrades taught me that the best parts are the ones that improve the ride in a balanced way. I always focused on compatibility, safety, and build quality first. When I did that, my MX350 became more fun, more capable, and better suited to the way I ride.
Final Thoughts
Upgrading my Razor MX350 has been one of the best ways I’ve found to improve both performance and riding enjoyment. Whether I focused on speed, battery life, or durability, each upgrade made the bike feel more capable and better suited to my needs. My biggest takeaway is that even small changes can make a noticeable difference, so I always choose upgrades based on how I actually ride.
Author Profile
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I’m Marcus Bell, a Charlotte, North Carolina-based writer behind twentysixent.com. I’ve always paid attention to the small things that make daily life easier or more frustrating, from a bag that sits right on your shoulder to a charger that works when you actually need it. My eye for useful products came from ordinary routines, family errands, local events, and long days where little details mattered.
Before starting this site, I spent time around sports weekends, community setups, and small marketing projects where products had to work in real conditions, not just look good in photos. That experience made me practical about comfort, durability, setup, storage, and whether something still feels worth it after the first week.
I started twentysixent.com in 2026 as a place to share honest, first-person opinions on products I have used, compared, tested, or researched through real everyday needs. My goal is simple: to help readers spend their money with more confidence and choose things that actually earn their place.
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