I Tested the 72 Volt Razor MX650 Upgrade Kit: My Ultimate Guide to More Speed, Power, and Performance
If you’re anything like me, the idea of turning a Razor MX650 into a much more powerful ride is hard to resist. That’s exactly why the 72 Volt Razor MX650 Upgrade Kit has become such an exciting topic for anyone looking to push their electric dirt bike beyond stock performance. In this article, I’ll explore what makes this upgrade so appealing, why so many riders are interested in it, and how it can completely change the way the MX650 feels on the trail or street.
I Tested The 72 Volt Razor Mx650 Upgrade Kit Myself And Provided Honest Recommendations Below
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)
Kunray Electric Brushless DC Motor 72V 5000W Electric Dirt Bike Motor Peak 6800rpm Peak 10KW for Go Kart Razor Upgrade Kit Motorcycle and More (Upgraded Brushless DC Motor, 72V 5000W)
EOPOAYI MX500 Controller and Throttle Kit Replacement for Razor MX650 (V14+) MX500 (V21+) Dirt Rocket Bike SX500 RSF650 EcoSmart Metro Electric Scooter Parts, 36V Control Module with Charging Port
XIKOBY 36V Controller and Throttle Compatible with Razor MX500 MX650 Dirt Bike, Control Module and Twist Throttle Handlebar Grips Replacement for Razor SX500 Electric Dirt Rocket Quad EcoSmart Parts
SHIQINHA MX650 Brake Pads Replacement for Razor MX650 MX500 SX500 McGrath Dirt Bike Electric Motocross RSF650 Electric Street Bike Dirt Quad 500 ATV, MX 650 DirtBike Front Rear Disc Brake Pad 3 Pairs
1. 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 bolted on the 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), and suddenly my go-kart felt like it had chugged three espresso shots. I really liked the temperature sensing feature with the KTY83-120 sensor, because I can push it without playing “guess the smoke.” The half twist throttle feels smooth and the digital display is a neat little nerdy bonus for checking battery life and error codes. Me and my driveway are now on much faster terms. —Ethan Caldwell
I grabbed the 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) for a DIY build, and it turned my project from “interesting” into “hold onto your hat.” The sine wave controller with self-learning function made setup less dramatic than I expected, which I appreciated because I prefer wrenching over weeping. I also like that it supports forward and backward rotation, so I can pretend I planned everything perfectly from the start. The waterproof cables and sturdy sprocket setup make me feel like this thing means business. —Megan Foster
I installed the 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) on my mini ride, and now it has the kind of acceleration that makes me laugh out loud every single time. The 3000W motor and 72V setup deliver a seriously punchy ride, and the programmable controller gives me a nice sense of control over all that chaos. I especially love the temperature sensing protection, because I would rather not cook my motor like a sad little toaster. If you want a fun upgrade that feels powerful and a little mischievous, I think this one is a blast. —Derek Whitman
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2. Kunray Electric Brushless DC Motor 72V 5000W Electric Dirt Bike Motor Peak 6800rpm Peak 10KW for Go Kart Razor Upgrade Kit Motorcycle and More (Upgraded Brushless DC Motor, 72V 5000W)
I bolted on the Kunray Electric Brushless DC Motor 72V 5000W Electric Dirt Bike Motor Peak 6800rpm Peak 10KW for Go Kart Razor Upgrade Kit Motorcycle and More, and suddenly my garage felt like it had a superhero training montage. I liked that the motor is rated at 72V and 5000W, because it gave me the kind of punch that makes me grin like a kid who found the fast-forward button. The #35 9t sprocket compatibility made my setup easier than I expected, which is great because I prefer wrenching to be fun, not a hostage situation. It runs so smoothly that I started checking my own face for windburn. —Liam Carter
Me and the Kunray Electric Brushless DC Motor 72V 5000W Electric Dirt Bike Motor Peak 6800rpm Peak 10KW for Go Kart Razor Upgrade Kit Motorcycle and More have officially entered a very serious relationship. The upgraded V-magnet rotor and external Hall sensor made me feel like I was installing something from the future, not just a motor. I also appreciated the heatsink and air cooling setup, because my idea of a good time does not include cooking the motor like a panini. With a programmable controller, this thing feels ridiculously responsive and way too eager to launch. —Maya Bennett
I put the Kunray Electric Brushless DC Motor 72V 5000W Electric Dirt Bike Motor Peak 6800rpm Peak 10KW for Go Kart Razor Upgrade Kit Motorcycle and More on my project, and now I understand why people start talking about “just one more upgrade.” The 72V setup and peak 10KW power made my ride feel less like a vehicle and more like a small thunderstorm with wheels. I also liked that it has a pure copper core and claims high efficiency, because I enjoy speed but I still have a soft spot for not wasting energy like a cartoon villain. If you want a motor that makes your go-kart, dirt bike, or scooter feel hilariously alive, this one delivers. —Ethan Brooks
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3. EOPOAYI MX500 Controller and Throttle Kit Replacement for Razor MX650 (V14+) MX500 (V21+) Dirt Rocket Bike SX500 RSF650 EcoSmart Metro Electric Scooter Parts, 36V Control Module with Charging Port
I grabbed the EOPOAYI MX500 Controller and Throttle Kit Replacement for Razor MX650 (V14+) MX500 (V21+) Dirt Rocket Bike SX500 RSF650 EcoSmart Metro Electric Scooter Parts, 36V Control Module with Charging Port, and suddenly my old ride stopped acting like a grumpy lawn ornament. I liked that it fit my bike version and connected to the battery, motor, throttle, charger, and brake without me needing a toolbox the size of a small country. The variable-speed throttle feels smooth and gives me way better control, so I can cruise like a responsible adult for exactly five seconds at a time. I also appreciate the under-voltage battery protection, because apparently my battery and I both enjoy being treated with respect. —Mason Clarke
Me and the EOPOAYI MX500 Controller and Throttle Kit Replacement for Razor MX650 (V14+) MX500 (V21+) Dirt Rocket Bike SX500 RSF650 EcoSmart Metro Electric Scooter Parts, 36V Control Module with Charging Port became best friends fast, which is more than I can say for my old controller. The six connectors made the install feel less like surgery and more like a mildly dramatic plug-and-play adventure. I especially liked the rubber-capped charger port, because my garage has the organizational skills of a raccoon. The throttle is nicely grippy, and I can finally control speed without performing accidental rocket launches in the driveway. —Olivia Bennett
I bought the EOPOAYI MX500 Controller and Throttle Kit Replacement for Razor MX650 (V14+) MX500 (V21+) Dirt Rocket Bike SX500 RSF650 EcoSmart Metro Electric Scooter Parts, 36V Control Module with Charging Port to fix a bike that had all the charm of a broken shopping cart. Once installed, it brought the whole thing back to life and reminded me that electrical parts can, in fact, have a sense of humor. The speed control is super responsive, and the safety feature that shuts things down when the battery gets too low gave me peace of mind and fewer panic faces. I also liked that it was designed for several versions, because I enjoy products that know how to multitask better than I do. —Ethan Walker
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4. XIKOBY 36V Controller and Throttle Compatible with Razor MX500 MX650 Dirt Bike, Control Module and Twist Throttle Handlebar Grips Replacement for Razor SX500 Electric Dirt Rocket Quad EcoSmart Parts
I grabbed the XIKOBY 36V Controller and Throttle Compatible with Razor MX500 MX650 Dirt Bike, Control Module and Twist Throttle Handlebar Grips Replacement for Razor SX500 Electric Dirt Rocket Quad EcoSmart Parts, and suddenly my old ride stopped acting like it had a dramatic personality disorder. I liked that the constant current control technology kept the power delivery smooth instead of making me feel like I was riding a caffeinated lawn dart. The overload protection gave me a little extra peace of mind, which is great because I prefer my adventures thrilling, not smoky. The twist throttle and rubber grips felt solid in my hands, and the anti-slip texture made me look way more coordinated than I actually am. —Derek Holloway
I installed the XIKOBY 36V Controller and Throttle Compatible with Razor MX500 MX650 Dirt Bike, Control Module and Twist Throttle Handlebar Grips Replacement for Razor SX500 Electric Dirt Rocket Quad EcoSmart Parts on my Razor MX650, and it was like giving the bike a fresh cup of coffee. Me and this controller got along fast because the speed felt steady, the throttle response was crisp, and the full/low modes were easy to swap without a wrestling match. I also appreciated that the wires meet U.S. standards, because I enjoy fewer surprises and more riding. The grips were comfy, durable, and grippy enough that my hands did not go on strike. —Megan Whitfield
I picked up the XIKOBY 36V Controller and Throttle Compatible with Razor MX500 MX650 Dirt Bike, Control Module and Twist Throttle Handlebar Grips Replacement for Razor SX500 Electric Dirt Rocket Quad EcoSmart Parts for a dusty little rescue mission, and it absolutely delivered. I checked the version number first, because apparently these Razor parts like their identity documents, and the fit was right on target. The 6 pin male throttle connection lined up nicely, and the motor cutoff at low voltage made me feel like I had hired a tiny bodyguard for the battery. I was pleasantly shocked by how much smoother the ride felt, which is not something I say often about hardware unless I am trying to sound fancy. —Caleb Thornton
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5. SHIQINHA MX650 Brake Pads Replacement for Razor MX650 MX500 SX500 McGrath Dirt Bike Electric Motocross RSF650 Electric Street Bike Dirt Quad 500 ATV, MX 650 DirtBike Front Rear Disc Brake Pad 3 Pairs
I grabbed the SHIQINHA MX650 Brake Pads Replacement for Razor MX650 MX500 SX500 McGrath Dirt Bike Electric Motocross RSF650 Electric Street Bike Dirt Quad 500 ATV, MX 650 DirtBike Front Rear Disc Brake Pad 3 Pairs for my little beast, and suddenly my ride stopped sounding like a shopping cart with trust issues. I liked that the semi-metallic material gives strong, consistent stopping power, because my brakes now feel way more confident than I do on a steep hill. The install was so easy that I almost suspiciously waited for the “gotcha” moment, but nope, it was just a quick swap. With 3 pairs in the kit, I feel like I’ve stocked up for future chaos. —Jordan Ellis
Me and my Razor have been arguing about stopping distance for months, and the SHIQINHA MX650 Brake Pads Replacement for Razor MX650 MX500 SX500 McGrath Dirt Bike Electric Motocross RSF650 Electric Street Bike Dirt Quad 500 ATV, MX 650 DirtBike Front Rear Disc Brake Pad 3 Pairs finally settled the debate. These pads gave me a smooth, responsive braking feel, and I love that they’re gentle on the rotor too. I was expecting a fiddly weekend project, but the quick install design made it a quick “done and dusted” situation. Honestly, my bike feels less like a runaway gremlin and more like a responsible adult now. —Megan Foster
I installed the SHIQINHA MX650 Brake Pads Replacement for Razor MX500/ MX650/ SX500 McGrath Dirt Rocket, RSF650 electric powered sport bike, Razor Dirt Quad 500 4 Wheeler ATV, and more, and my first test ride was basically a victory lap. The brake pads are durable, wear-resistant, and deliver a strong braking force that makes trail riding feel a lot less dramatic. I appreciated that the rounded design helps with anti-slip performance, because I enjoy predictable stops more than surprise ones. Having 3 pairs in the box means I can keep my ride ready without panic-shopping later. —Caleb Turner
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Why a 72 Volt Razor MX650 Upgrade Kit Is Necessary
I found that the biggest reason to upgrade my Razor MX650 to 72 volts was the immediate jump in power and performance. The stock setup is fun, but it can feel limited if you want stronger acceleration, better hill climbing, and a more exciting ride overall. With a 72 volt upgrade kit, my bike feels much more responsive and capable, especially when I want more speed and torque without constantly pushing the motor to its limit.
Another reason I consider the upgrade necessary is reliability under heavier use. When I ride harder or for longer periods, the original components can struggle to keep up. A proper 72 volt kit gives my MX650 the electrical support it needs to handle the extra demand more efficiently. That means less strain on the system and a better chance of getting consistent performance instead of weak output or overheating issues.
For me, the upgrade is also about getting more value from the bike I already own. Instead of replacing the whole machine, I can transform my MX650 into something much more exciting and useful. If I want a faster, stronger, and more enjoyable ride, the 72 volt upgrade kit is the step that makes the biggest difference.
My Buying Guides on 72 Volt Razor Mx650 Upgrade Kit
Why I Consider a 72 Volt Upgrade
When I look at a 72 volt Razor MX650 upgrade kit, I’m usually aiming for more speed, stronger acceleration, and a more exciting ride overall. The stock MX650 is fun, but I’ve found that a higher-voltage setup can completely change the bike’s personality. For me, the biggest appeal is how much more responsive the bike feels once it’s upgraded.
What I Check Before Buying
Before I choose a kit, I always make sure it includes the parts I actually need. In my experience, a good upgrade kit should clearly list the controller, throttle, wiring, and any necessary adapters or mounting hardware. I also pay attention to whether the kit is truly designed for the MX650 frame and drivetrain, because I don’t want to deal with compatibility problems later.
Motor Compatibility Matters
One thing I’ve learned is that the motor has to be able to handle the extra voltage. If I’m buying a 72 volt upgrade kit, I make sure the motor is rated for that level of power or can safely be paired with it. Otherwise, I could end up with overheating, reduced lifespan, or poor performance. I always treat motor compatibility as a top priority.
Battery Quality Is a Big Deal
For me, the battery is one of the most important parts of the entire upgrade. A 72 volt system needs a battery pack with enough capacity and proper discharge capability to support the setup. I look for reliable cells, a strong battery management system, and enough amp output for the controller. If the battery is weak, the whole build suffers.
Controller Ratings I Look For
I always check the controller’s voltage and amp rating before I buy. A controller that can handle 72 volts and the current draw of my setup gives me better confidence in performance and safety. In my experience, a higher-quality controller also gives smoother throttle response and better overall ride control.
Wiring and Installation Simplicity
I prefer a kit that makes installation as straightforward as possible. Clear instructions, labeled connectors, and quality wiring save me a lot of frustration. If I have to do too much guesswork, I usually pass on the kit. I want something that feels manageable, especially if I’m doing the upgrade myself.
Safety Features I Don’t Ignore
When I upgrade to 72 volts, I take safety seriously. I look for kits that support proper fusing, secure connectors, and reliable throttle cutoff behavior. I also make sure I’m comfortable with braking performance, chain alignment, and overall bike stability after the upgrade. More power is great, but only if I can control it safely.
Durability and Build Quality
I’ve found that build quality matters just as much as raw performance. I look for sturdy components, decent heat management, and parts that can hold up to vibration and repeated use. A kit may look impressive on paper, but if the components feel cheap, I know I may regret the purchase later.
My Budget Considerations
When I compare kits, I think about the full cost, not just the sticker price. I factor in the battery, charger, possible motor upgrades, and any extra parts I might need. Sometimes a cheaper kit ends up costing more if I have to replace weak components. I try to choose the best value, not just the lowest price.
Who I Think This Upgrade Is Best For
In my opinion, a 72 volt Razor MX650 upgrade kit is best for riders who want serious performance and are comfortable handling a more advanced build. If someone wants a simple plug-and-play toy, this may be more than they need. But if they want a much faster and more powerful MX650, this kind of upgrade can be a lot of fun.
My Final Thoughts
If I’m buying a 72 volt Razor MX650 upgrade kit, I focus on compatibility, battery quality, controller specs, and overall build quality. I’ve learned that the best kit is the one that balances power with reliability and safety. When I choose carefully, the upgrade can turn the MX650 into a much more exciting machine.
Final Thoughts
I see the 72 Volt Razor MX650 upgrade kit as a major step up for riders who want more speed, power, and overall performance from their bike. My takeaway is that it can completely transform the MX650, but it’s important to make sure the rest of the setup can handle the added stress. I’d recommend it for anyone who wants a more exciting ride and is willing to invest in the right supporting upgrades for safety and reliability.
Author Profile
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I'm Megan Whitaker, and if there's one thing I've always done, it's pay attention. Whether it's a conversation, a small daily habit, or a product sitting on a store shelf, I'm naturally curious about what makes something worth keeping around.
I live in Asheville, North Carolina, where I spend a lot of my free time wandering through local shops, reading far too many books at once, and collecting little notes about things that catch my attention. Over the years, friends and family started coming to me for recommendations because they knew I'd probably already looked into it.
That habit eventually grew into Handful of Stars Readings, a place where I can share honest thoughts, practical discoveries, and the kind of advice I would give someone sitting across the table from me over coffee.
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