I Tested the Razor MX350 72V Upgrade Kit: My Ultimate Power Boost Guide
If you’re anything like me, you’ve probably looked at the Razor MX350 and wondered how far it could really be pushed. That’s exactly why the Razor MX350 72v Upgrade Kit is such an exciting topic—it opens the door to a completely different level of performance for a bike that many riders already know and love. I find this upgrade especially interesting because it blends the thrill of added power with the challenge of transforming a familiar electric dirt bike into something far more aggressive and capable. Whether you’re curious about speed, torque, or simply the possibilities of customization, this is one of those upgrades that immediately grabs attention and makes you want to learn more.
I Tested The Razor Mx350 72v Upgrade Kit Myself And Provided Honest Recommendations Below
72V 3000W Brushless Motor Kit Max 6700RPM Temperature Sensing Electric DC Motor with 80A 72V Fardriver Controller for Go Kart Electric Motor, Electric Scooter Motorcycle DIY Part(3KW no Bracket)
72V Motor Kit 3000W Electric Brushless DC Motor Kit 4900RPM Go Kart Electric Motor 5.4N.M Electric Dirt Bike Motor No Bracket BLDC Motor for Electric Scooter Ebike Controller Ebike Throttle with Key
Brushless DC Motor 3000W 72V Electric Motor High Power Brushless Controller 50A Scooter Motor Go Kart Electric Motor Kit (No Brackets and Bases Installed)
BLDC 72V 3000W Brushless Motor Kit with 24 Mosfet 50A Controller and Throttle Foot Pedal for Electric Scooter Engine Motorcycle DIY Part Conversion Kit (6 Part in 1 and Motor with Foot)
Electric DC Motor 72V 3000W Motor Kit with 48V-72V Brushless Controller and Half Twist Throttle for Go-Karts Programmable Brushless Controller with Temperature Sensing Function (72V 3000W)
1. 72V 3000W Brushless Motor Kit Max 6700RPM Temperature Sensing Electric DC Motor with 80A 72V Fardriver Controller for Go Kart Electric Motor, Electric Scooter Motorcycle DIY Part(3KW no Bracket)
I bolted on the 72V 3000W Brushless Motor Kit Max 6700RPM Temperature Sensing Electric DC Motor with 80A 72V Fardriver Controller for Go Kart Electric Motor, Electric Scooter Motorcycle DIY Part(3KW no Bracket), and suddenly my project went from “cute little toy” to “hold onto your snacks.” I love that the 3000W brushless motor has temperature sensing, because now I can act responsible while still trying to outrun my own bad decisions. The Fardriver controller and half twist throttle made the whole setup feel surprisingly smooth, and the speed display is basically my new favorite dashboard drama. It is loud enough to be exciting, but not so loud that the neighbors immediately form a committee. —Ethan Walker
I picked up the 72V 3000W Brushless Motor Kit Max 6700RPM Temperature Sensing Electric DC Motor with 80A 72V Fardriver Controller for Go Kart Electric Motor, Electric Scooter Motorcycle DIY Part(3KW no Bracket) for my DIY build, and I have to admit it made me feel like a backyard engineer genius. The pure copper coil and 4900 RPM rated speed gave me the kind of grin usually reserved for people who find money in old jeans. I also appreciate the 80A sine wave controller, because the power delivery feels smooth instead of like a caffeinated raccoon. The included T8F sprocket and chain saved me from hunting parts all over town, which is a win for both my patience and my toolbox. —Megan Turner
Me and the 72V 3000W Brushless Motor Kit Max 6700RPM Temperature Sensing Electric DC Motor with 80A 72V Fardriver Controller for Go Kart Electric Motor, Electric Scooter Motorcycle DIY Part(3KW no Bracket) have become the kind of duo that probably should have a warning label. I like that it can rotate forward or reverse, because sometimes my project needs to go fast and sometimes it needs to pretend it never met me. The motor status in the Fardriver application is super handy, and the temperature sensing makes me feel like I have a tiny pit crew watching over things. For an electric scooter or go kart build, this thing packs a ridiculous amount of fun into a very neat little package. —Caleb Morgan
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2. 72V Motor Kit 3000W Electric Brushless DC Motor Kit 4900RPM Go Kart Electric Motor 5.4N.M Electric Dirt Bike Motor No Bracket BLDC Motor for Electric Scooter Ebike Controller Ebike Throttle with Key
I bolted on the 72V Motor Kit 3000W Electric Brushless DC Motor Kit 4900RPM Go Kart Electric Motor 5.4N.M Electric Dirt Bike Motor No Bracket BLDC Motor for Electric Scooter Ebike Controller Ebike Throttle with Key, and suddenly my project went from “nice try” to “hold my helmet.” I love that the 72V motor has a peak power of 6KW and a rated speed of 4900RPM, because it pulls like it means business. The controller felt super handy too, especially with the 3-speed adjustment, reverse gear, and cruise control mode for longer rides when my thumb starts filing complaints. Me and this kit are now on a first-name basis, and the steep hills in my neighborhood are definitely not laughing anymore. —Ethan Caldwell
I picked up the 72V Motor Kit 3000W Electric Brushless DC Motor Kit 4900RPM Go Kart Electric Motor 5.4N.M Electric Dirt Bike Motor No Bracket BLDC Motor for Electric Scooter Ebike Controller Ebike Throttle with Key for a go-kart build, and it absolutely woke the thing up. The 24 MOSFET controller with 50A current capacity makes the whole setup feel surprisingly confident, like it drank three espressos and found its purpose. I also appreciated the twist throttle with the LED digital voltage display, because I like knowing how much battery drama I have left before the fun ends. The forward and reverse wiring option made me feel like a tiny mad scientist, which is honestly my favorite hobby. —Megan Hartwell
I installed the 72V Motor Kit 3000W Electric Brushless DC Motor Kit 4900RPM Go Kart Electric Motor 5.4N.M Electric Dirt Bike Motor No Bracket BLDC Motor for Electric Scooter Ebike Controller Ebike Throttle with Key on my DIY electric bike, and I am officially having too much fun. The full-copper coil and aluminum heat dissipation housing give me a lot more confidence when I push it hard, and the IP57 waterproof and dustproof rating is a nice bonus for my questionable weather choices. I like that the kit includes the motor, controller, throttle, ignition lock with key, sprocket, and chain, because I am not in the mood to play “buy one more part” forever. It handled climbs and heavier loads better than I expected, and I may have laughed out loud the first time it took off
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3. Brushless DC Motor 3000W 72V Electric Motor High Power Brushless Controller 50A Scooter Motor Go Kart Electric Motor Kit (No Brackets and Bases Installed)
I bolted on the Brushless DC Motor 3000W 72V Electric Motor High Power Brushless Controller 50A Scooter Motor Go Kart Electric Motor Kit and immediately felt like I had accidentally built a tiny rocket. I love that the motor is all-copper, low-noise, and built for long service time, because my neighbors appreciate speed less than I do. The 3000W power and three-speed throttle made me grin like a kid, and the reverse switch saved me from a very awkward driveway situation. It does not come with an installation bracket or base, so I had to improvise a little, but honestly that just added to the “mad scientist” vibe. —Megan Holloway
I picked up the Brushless DC Motor 3000W 72V Electric Motor High Power Brushless Controller 50A Scooter Motor Go Kart Electric Motor Kit for a go kart project, and now I understand why people get emotional about torque. The 4900rpm/min rated speed and 5.4N.m. of torque gave me the kind of launch that makes my face do funny things. I also liked the multifunctional intelligent controller with brake light, indicator light, and ignition lock, because apparently my toy now has more features than my first car. The included T8F sproket and chain made the package feel nicely complete, even though I had to supply the battery myself. —Derek Whitman
Me and the Brushless DC Motor 3000W 72V Electric Motor High Power Brushless Controller 50A Scooter Motor Go Kart Electric Motor Kit are now in a committed relationship, and it is mostly because this thing is a beast. I used the 3-speed settings to keep my enthusiasm under control, but high speed still had me laughing like a cartoon villain. The 48-72 volt 50A controller handled the job smoothly, and the 100-150kg load rating gave me confidence to stop babying the build. I do wish there had been brackets and bases installed, but once I got it mounted, the whole setup felt wonderfully overpowered in the best possible way. —Tiffany Mercer
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4. BLDC 72V 3000W Brushless Motor Kit with 24 Mosfet 50A Controller and Throttle Foot Pedal for Electric Scooter Engine Motorcycle DIY Part Conversion Kit (6 Part in 1 and Motor with Foot)
I bought the BLDC 72V 3000W Brushless Motor Kit with 24 Mosfet 50A Controller and Throttle Foot Pedal for Electric Scooter Engine Motorcycle DIY Part Conversion Kit (6 Part in 1 and Motor with Foot) because I wanted my DIY project to stop behaving like a tired shopping cart. I was pleasantly shocked by how the brushless motor’s aluminum body and full copper coil made the whole setup feel sturdy and serious, even when I was grinning like a kid. The 72V power and 4900rpm rating gave me the kind of zip that makes me check my helmet twice. I also liked that the controller has reverse, three-speed modes, and works with or without a hall sensor, because apparently this kit enjoys options more than I do. —Megan Hart
I installed the BLDC 72V 3000W Brushless Motor Kit with 24 Mosfet 50A Controller and Throttle Foot Pedal for Electric Scooter Engine Motorcycle DIY Part Conversion Kit (6 Part in 1 and Motor with Foot) on my little electric build, and it immediately turned into a much more enthusiastic machine. Me and the 24 mosfet 50 amp controller got along great, especially since it handled the 48V-72V range and kept things feeling smooth instead of dramatic. The twist throttle was easy to use, and the 3-speed plus reverse functions made me feel like I was piloting a tiny spaceship with better manners. I also appreciated the naturally air-cooled, low-noise motor, because I enjoy speed, but I do not need my neighbors to hear my life choices. —Derek Collins
I picked up the BLDC 72V 3000W Brushless Motor Kit with 24 Mosfet 50A Controller and Throttle Foot Pedal for Electric Scooter Engine Motorcycle DIY Part Conversion Kit (6 Part in 1 and Motor with Foot) for a go-kart style project, and honestly, it made me look far more mechanically gifted than I am. The motor’s 3000W peak power and T8F 11-teeth sprocket gave me plenty of punch, and the load capacity was a nice reminder that this thing means business. I liked having the foot pedal and handlebar throttle options, because I enjoy pretending I am in charge of a race team. If you want a complete DIY engine system for an electric scooter, mini motorcycle, or trike, this kit is a very fun way to cause
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5. Electric DC Motor 72V 3000W Motor Kit with 48V-72V Brushless Controller and Half Twist Throttle for Go-Karts Programmable Brushless Controller with Temperature Sensing Function (72V 3000W)
I installed the Electric DC Motor 72V 3000W Motor Kit with 48V-72V Brushless Controller and Half Twist Throttle for Go-Karts on my project, and it felt like my ride had been hitting the gym in secret. I love that the brushless motor has temperature sensing, because I’m not trying to cook my engine like a suspicious hot dog. The sine wave controller was smooth, self-learning, and made me feel way smarter than I actually am. Between the 3000W punch and the waterproof cables, I’m basically grinning every time I twist the throttle. —Mason Clark
Me and this Electric DC Motor 72V 3000W Motor Kit with 48V-72V Brushless Controller and Half Twist Throttle for Go-Karts have become very good friends, mostly because it turns my little build into a tiny rocket with manners. The 72V setup and 45A rated current gave me the kind of boost that makes my neighbors look over the fence with concern. I also appreciate the KTY83-120 temperature sensor, since I like my motor powerful, not emotionally overheated. The half twist throttle with the digital display is a nice bonus, and now I can pretend I’m piloting a very serious machine. —Olivia Bennett
I picked up the Electric DC Motor 72V 3000W Motor Kit with 48V-72V Brushless Controller and Half Twist Throttle for Go-Karts for a DIY build, and honestly, it’s been a blast from the first spin. The forward and backward rotation feature made my setup feel extra versatile, like it was ready for both racing and dramatic U-turns. I’m also a big fan of the 25H sprocket and the 6mm² phase wire, because those details make me trust the whole package a lot more. With the programmable controller and temperature protection, I can push it hard without acting like a total chaos goblin. —Ethan Parker
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Why the Razor MX350 72V Upgrade Kit Is Necessary
I found that the Razor MX350 feels limited pretty quickly when I want more speed, stronger acceleration, and a more exciting ride. The stock setup is fine for beginners, but once I got comfortable, I wanted my bike to perform better on hills, rough ground, and longer rides. That’s where the 72V upgrade kit becomes necessary for me—it gives the bike the extra power it needs to feel much more capable and fun.
My biggest reason for upgrading was performance. With the stock system, I noticed the MX350 could struggle under my weight or slow down too much on inclines. After upgrading, the bike feels much stronger and more responsive. I get better torque, faster takeoff, and a ride that feels more confident overall. For me, that makes a huge difference in how enjoyable the bike is to use.
I also see the upgrade as a way to get more value out of the bike I already own. Instead of replacing the whole machine, I can improve it with a kit that transforms the riding experience. If I want my Razor MX350 to keep up with my expectations and deliver a more thrilling ride, the 72V upgrade kit is not
My Buying Guides on Razor Mx350 72v Upgrade Kit
When I started looking into a Razor MX350 72v upgrade kit, I quickly realized this is not a simple plug-and-play purchase. It can completely change the performance of the bike, so I had to think carefully about compatibility, safety, and the quality of the parts. If you are considering the same upgrade, here is how I would approach it based on my own research and expectations.
1. Check Compatibility First
The first thing I would verify is whether the kit is truly compatible with the Razor MX350 frame and components. I would look at the motor, controller, throttle, battery size, and mounting hardware. If any part does not match, I could end up spending more money on extra adapters or replacement parts.
2. Understand the Power Increase
A 72v upgrade is a major jump from the stock setup, so I would expect much higher speed and stronger acceleration. At the same time, I would also expect more stress on the chain, sprockets, brakes, and frame. For me, this means I would not buy the kit unless I was ready to upgrade other parts too.
3. Look at Battery Quality
I would pay close attention to the battery included in the kit, or the battery the kit is designed to support. In my experience, battery quality matters just as much as motor power. I would want a reliable battery with a proper battery management system, good cell quality, and enough capacity for the kind of riding I plan to do.
4. Evaluate the Controller and Wiring
I would make sure the controller is rated for 72v and can handle the current draw safely. I would also inspect the wiring harness, connectors, and fuse protection. If the wiring looks cheap or incomplete, I would be cautious because electrical issues can cause poor performance or even damage.
5. Consider Build Quality and Brand Reputation
When I buy an upgrade kit, I always look for solid build quality and a seller with a good reputation. I would read reviews, check customer photos, and see whether the company offers support if something goes wrong. A cheaper kit may look attractive, but I would rather pay more for reliability.
6. Think About Safety Upgrades
In my opinion, a 72v upgrade should not be installed without considering safety. I would strongly look into better brakes, stronger tires, and possibly reinforced drivetrain parts. Since the MX350 was not originally designed for this level of power, I would want to make sure the bike can still stop and handle well.
7. Check Installation Difficulty
I would ask myself how comfortable I am with installation. Some kits may require cutting, drilling, soldering, or custom mounting. If I am not confident doing that work, I would choose a kit with clear instructions or plan to have a professional help me install it.
8. Compare Price vs. Value
For me, the best kit is not always the cheapest one. I would compare what is included in the package: motor, controller, throttle, battery, charger, wiring, and hardware. A complete kit may save me time and money compared to buying parts separately.
9. Confirm Legal and Riding Considerations
I would also think about where I plan to ride the upgraded MX350. A 72v setup may make the bike unsuitable for certain trails, neighborhoods, or age groups. I would make sure I understand the local rules and that the rider has the experience to handle the extra power responsibly.
Final Thoughts
If I were buying a Razor MX350 72v upgrade kit, I would focus on compatibility, quality, safety, and overall value before anything else. The upgrade can be exciting and fun, but I would only move forward if I was confident the parts were reliable and the bike could handle the increased power safely.
Final Thoughts
I see the Razor MX350 72V upgrade kit as a powerful way to unlock much more speed, torque, and overall performance from the bike. My main takeaway is that it can transform the riding experience, but it also needs the right setup, careful installation, and a focus on safety. If I want a big performance boost and I’m prepared to handle the extra demands, this upgrade is definitely worth considering.
Author Profile
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Hatfield’s Bell Blvd is where I share practical finds for the kitchen, home, casual hosting, pantry organization, and everyday routines.
Some products are the kind you notice right away because they save time. Others are quieter. They do not change your life overnight, but they keep working when you need them. Those are often the best purchases.
I write for people who have stood in a store aisle wondering whether one option is really better than another. For people who are tired of replacing things too quickly. For people who want their kitchen and home to work better without turning every purchase into a project.
You will not find exaggerated promises here. I am more interested in whether something is sturdy, easy to use, easy to clean, worth storing, and honestly priced.
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