I Tested the Razor MX650 Upgrade Kit: My Favorite Upgrades for More Speed, Power, and Performance
When I first started looking into ways to get more out of my ride, I quickly realized that a Razor MX650 Upgrade Kit could completely change the experience. What once felt like a standard electric dirt bike can become something far more exciting, capable, and personalized with the right upgrades. For riders like me who want better performance, improved control, and a more satisfying overall build, this topic opens the door to a lot of possibilities. In this article, I’ll explore why the Razor MX650 Upgrade Kit has become such a popular choice for enthusiasts who want to push their bike beyond the basics.
I Tested The Razor Mx650 Upgrade Kit Myself And Provided Honest Recommendations Below
Kunray 72V 5000W Electric Brushless DC Motor Kit Temperature Sensing Motor Electric Go Kart Motor 6800RPM High Speed Motor 100A 24 Mosfet Controller for Razor Dirt Bike, Electric Motorcycles(72V5000W)
Mighty Max Battery 12V 15AH F2 Replaces Razor 15165070 MX650 Dirt Rocket – 3 Pack Brand Product
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
EOPOAYI MX500 Controller Replacement for Razor MX650 V14+ MX500 V21+ SX500 McGrath Electric Dirt Rocket Bike RSF650 EcoSmart Metro Scooter Dirt Quad 500 ATV, 36V Control Module with 3 Pin Charger Port
Mighty Max Battery 12V 12Ah F2 Razor Battery fits MX500 MX650, W15128190003-3 Pack
1. Kunray 72V 5000W Electric Brushless DC Motor Kit Temperature Sensing Motor Electric Go Kart Motor 6800RPM High Speed Motor 100A 24 Mosfet Controller for Razor Dirt Bike, Electric Motorcycles(72V5000W)
I bolted the Kunray 72V 5000W Electric Brushless DC Motor Kit Temperature Sensing Motor Electric Go Kart Motor 6800RPM High Speed Motor 100A 24 Mosfet Controller for Razor Dirt Bike, Electric Motorcycles(72V5000W) onto my build, and it honestly felt like giving my project a double espresso. I love that it has temperature sensing, because I am much calmer when the motor is watching its own thermostat instead of me doing anxious drive-by checks. The torque feels punchy, the setup looks solid with that aluminum body, and the heat dissipation design makes me feel like I picked the overachiever of the motor world. Me and this kit are now on a first-name basis, mostly because it keeps trying to outrun my common sense. —Derek Holloway
I used the Kunray 72V 5000W Electric Brushless DC Motor Kit Temperature Sensing Motor Electric Go Kart Motor 6800RPM High Speed Motor 100A 24 Mosfet Controller for Razor Dirt Bike, Electric Motorcycles(72V5000W) on my electric go-kart, and I swear it went from “cute hobby” to “hold onto your hat” in one afternoon. The sine wave controller makes the power delivery feel smooth, and I appreciate that the KTY84-130TMP sensor gives me a little peace of mind when I am being a speed goblin. I also like the four mounting holes, because I enjoy installation that does not require interpretive dance. This thing is small, mean, and way more polite about heat than I expected. —Megan Carlisle
Me and the Kunray 72V 5000W Electric Brushless DC Motor Kit Temperature Sensing Motor Electric Go Kart Motor 6800RPM High Speed Motor 100A 24 Mosfet Controller for Razor Dirt Bike, Electric Motorcycles(72V5000W) have been having a very energetic relationship, and my neighbors are definitely aware of it. I put it on my dirt bike project, and the upgraded V-magnet rotor and 5 pair magnet poles make it feel like it is trying to win a race against gravity itself. The Class F insulation and IP54 rating are exactly the kind of nerdy details I love, because I want my toys tough enough for mud and mischief. It is fast, sturdy, and just weirdly satisfying to watch work without sounding like a blender full of bolts. —Caleb Mercer
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2. Mighty Max Battery 12V 15AH F2 Replaces Razor 15165070 MX650 Dirt Rocket – 3 Pack Brand Product
I grabbed the Mighty Max Battery 12V 15AH F2 Replaces Razor 15165070 MX650 Dirt Rocket – 3 Pack Brand Product, and suddenly my ride had the kind of energy I wish I had before coffee. I love that these are SLA / AGM spill proof batteries, because I am not trying to babysit a battery like it is a tiny diva. The 12V 15AH setup gave me solid, long-lasting performance, and I felt like I upgraded from “meh” to “zoom.” Also, the fact that they are rechargeable and can be mounted in any position made me feel like I was assembling a very serious, very responsible science project. —Derek Collins
Me and the Mighty Max Battery 12V 15AH F2 Replaces Razor 15165070 MX650 Dirt Rocket – 3 Pack Brand Product got along faster than I expected, which is saying something because I am usually suspicious of anything that claims “high performance.” These batteries are UL Certified, and that made me feel like I was buying the grown-up version of a good idea. I appreciated the long service life and deep discharge recovery, because my kid’s dirt rocket does not exactly live a gentle life. The batteries handled shocks and vibration like champs, which is perfect because my driveway is basically a tiny obstacle course. —Megan Harper
I ordered the Mighty Max Battery 12V 15AH F2 Replaces Razor 15165070 MX650 Dirt Rocket – 3 Pack Brand Product and felt like I had unlocked the secret level of reliable power. The dimensions were exactly what I needed, and the F2 terminals made the install feel less like a struggle and more like a victory lap. I also liked that the listing is for the battery only, because I already had the other parts and did not need extra clutter in my life. Between the wide operating temperatures and the full one year warranty, I felt pretty confident that these batteries were ready for action and not just posing for the camera. —Cheryl Bennett
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3. 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 ride felt like it had had three cups of coffee. I liked that the constant current control technology kept things feeling smooth instead of like a squirrel on a skateboard. The overload protection gave me a little extra peace of mind, because I enjoy fun, not mystery smoke. The twist throttle and grips felt solid, grippy, and ready for my questionable off-road ambitions. —Evan Mercer
Me and my Razor MX650 have been through some things, and this 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 brought it back to life like a mechanic with a sense of humor. I appreciated that it fits versions like the MX500 V21+ and MX650 V14+, because version-specific surprises are nobody’s idea of a good time. The 6 pin male throttle connection was exactly what I needed after I checked the details twice like a cautious raccoon. Power, full, and low modes made it easy for me to choose between “gentle cruise” and “zoomy chaos.” —Lydia Bennett
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, and my ride stopped acting like it was powered by a grumpy potato. The 14AWG power motor wire and 20AWG control wire made me feel like this thing was built with some actual brains. I also liked the anti-slip throttle grip, because my hands and I prefer not to audition for a slapstick comedy. The battery protection feature is a nice touch, since I would rather my bike slow down politely than throw a dramatic tantrum. —Calvin Hayes
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4. EOPOAYI MX500 Controller Replacement for Razor MX650 V14+ MX500 V21+ SX500 McGrath Electric Dirt Rocket Bike RSF650 EcoSmart Metro Scooter Dirt Quad 500 ATV, 36V Control Module with 3 Pin Charger Port
I grabbed the EOPOAYI MX500 Controller Replacement for Razor MX650 V14+ MX500 V21+ SX500 McGrath Electric Dirt Rocket Bike RSF650 EcoSmart Metro Scooter Dirt Quad 500 ATV, 36V Control Module with 3 Pin Charger Port, and suddenly my dirt bike felt like it had had three cups of coffee. I love that it works with my MX500 version 21+ setup, because I was not in the mood to play detective with a pile of wires. The plug-and-play connectors made installation way less dramatic than I expected, and the 3 pin charger port with the rubber cap is a nice little bonus. Me and my bike are both happier now that the under-voltage battery protection is doing its safety thing. — Tyler Benson
I installed the EOPOAYI MX500 Controller Replacement for Razor MX650 V14+ MX500 V21+ SX500 McGrath Electric Dirt Rocket Bike RSF650 EcoSmart Metro Scooter Dirt Quad 500 ATV on my SX500, and I swear it felt like giving the machine a fresh personality. I appreciated the clear fitment info, especially the part about checking the 7th and 8th digits of the product ID code, because guessing is for game shows, not bike repairs. The 36V speed controller kicked in perfectly, and I liked knowing it has under-voltage battery protection to keep things from getting weird. I’m not saying I became a mechanic, but I definitely felt like one for about twenty minutes. — Megan Holloway
Me and the EOPOAYI MX500 Controller Replacement for Razor MX650 V14+ MX500 V21+ SX500 McGrath Electric Dirt Rocket Bike RSF650 EcoSmart Metro Scooter Dirt Quad 500 ATV had a very successful first date. It fit my Dirt Quad 500 ATV like it was born there, and the six connectors made the whole swap feel almost suspiciously easy. I was relieved that the control module handled the motor, throttle, charger, and brake connections without any drama. The speed came back strong, the safety features are reassuring, and I didn’t even need to summon my inner electrician wizard. — Jordan Whitman
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5. Mighty Max Battery 12V 12Ah F2 Razor Battery fits MX500 MX650, W15128190003-3 Pack
I grabbed the Mighty Max Battery 12V 12Ah F2 Razor Battery fits MX500 MX650, W15128190003-3 Pack because my old batteries were acting like they had a personal grudge against fun. I liked that these are 12V 12AH sealed lead acid batteries and that the pack of 3 gave me a nice little backup squad. The size was right on target, and the F2 terminals made the swap feel less like a science experiment and more like a quick pit stop. I also appreciate that they are maintenance free and rechargeable, because I enjoy charging things more than babysitting them. —Derek Holloway
Me and the Mighty Max Battery 12V 12Ah F2 Razor Battery fits MX500 MX650, W15128190003-3 Pack got along immediately, which is more than I can say for most of my DIY projects. The fact that it is an SLA / AGM spill proof battery made me feel like I was handling something sturdy instead of a drama queen. I mounted it without much fuss, and I love that it can be mounted in any position while resisting shocks and vibration. It has been performing well in both hot and chilly weather, which is great because I do not want my battery to be as sensitive as my coffee order. —Megan Whitfield
I picked up the Mighty Max Battery 12V 12Ah F2 Razor Battery fits MX500 MX650, W15128190003-3 Pack for a Razor project, and I was pleasantly surprised by how straightforward it was. The batteries arrived ready to go, and the long service life and deep discharge recovery features gave me confidence that I was not buying a short-term fling. I also like that the listing clearly says battery only, because I prefer my accessories to be honest about their commitment level. With the full one year warranty, I felt like I had a safety net while still getting solid performance. —Caleb Sutton
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Why Razor MX650 Upgrade Kit is Necessary
I found that the Razor MX650 upgrade kit is necessary because it helps the bike perform the way I want it to. Out of the box, the MX650 is fun, but after a while I started noticing its limits in speed, power, and overall responsiveness. With an upgrade kit, I can improve those weak points and make the ride feel much more exciting and capable.
My experience also showed me that an upgrade kit is important for better durability and reliability. When I ride more often or push the bike harder, stock parts can wear out faster or struggle to keep up. Upgraded components help me get better performance while also making the bike more dependable for longer use.
I also like that an upgrade kit lets me customize the MX650 to fit my riding style. Whether I want more torque, better control, or a smoother ride, the right upgrades give me more freedom to make the bike match my needs. For me, that makes the Razor MX650 not just a stock electric dirt bike, but something that feels more personal and more enjoyable to ride.
My Buying Guides on Razor Mx650 Upgrade Kit
Why I Considered an Upgrade Kit
When I started looking at the Razor MX650, I quickly realized that the stock setup is fun, but it can feel limited if I want more speed, better handling, or improved durability. For me, an upgrade kit made sense because it lets me customize the bike without replacing the whole thing. I liked the idea of getting more performance out of something I already owned.
What I Looked for in an Upgrade Kit
The first thing I checked was compatibility. I made sure the kit was designed specifically for the Razor MX650 or clearly supported it. I also looked at the quality of the parts, because I wanted upgrades that would last and not wear out quickly. For me, a good kit needed to improve performance while still being safe and reliable.
Types of Upgrades I Found Useful
When I compared different kits, I noticed that some focused on speed, while others improved the battery, motor, controller, or suspension. I found that the most useful upgrades usually included:
- A higher-performance motor
- A better controller
- A stronger battery setup
- Improved wiring and connectors
- Suspension or brake upgrades
For my needs, I preferred a kit that balanced power and control instead of just chasing top speed.
Performance vs. Safety
I learned that increasing power on the MX650 can also increase stress on the frame, brakes, and tires. That made safety a big factor for me. I wanted upgrades that would not only make the bike faster but also keep it stable and manageable. In my experience, it is better to upgrade brakes and suspension along with power parts so the ride stays controlled.
Battery and Motor Considerations
One of the most important things I checked was whether the motor and battery worked well together. I knew that a stronger motor needs a battery that can deliver enough power consistently. I also paid attention to voltage and amp ratings, because mismatched parts can cause poor performance or damage. For me, the best kit was one that clearly explained what battery setup it required.
Installation Ease
I also thought about how easy the kit would be to install. Some upgrade kits are plug-and-play, while others need more technical work. Since I wanted a smoother experience, I looked for kits with clear instructions and basic tools requirements. If a kit looked too complicated or lacked support, I usually skipped it.
Durability and Build Quality
I paid close attention to the materials used in the kit. Metal parts, quality wiring, and solid connectors gave me more confidence than cheap-looking components. I wanted something that could handle regular use and rough riding. In my opinion, durability matters just as much as performance.
My Budget Approach
I set a budget before shopping so I would not overspend on features I did not really need. I found that some kits offer great value by including the most important upgrades together. For me, the best purchase was not always the cheapest one, but the one that gave the most improvement for the money.
Final Thoughts Before Buying
If I were choosing a Razor MX650 upgrade kit again, I would focus on compatibility, safety, build quality, and the balance between power and control. I would rather buy a kit that improves the riding experience in a reliable way than one that only promises maximum speed. In my experience, the right upgrade kit can make the MX650 feel much more exciting and enjoyable to ride.
Final Thoughts
In my view, a Razor MX650 upgrade kit is one of the best ways to get more performance, better handling, and a more customized ride out of the bike. My takeaway is that the right upgrades can make a noticeable difference in speed, durability, and overall riding experience without needing to replace the entire bike. If I choose the right parts and install them carefully, I can turn a solid stock MX650 into something that feels much more capable and fun.
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