I Tested the Upgrade on My Razor MX350: Here’s What Changed and Why It’s Worth It
When I first got my Razor MX350, I was thrilled by its power and speed, but as time went on, I realized there was so much more potential just waiting to be unlocked. Upgrading the Razor MX350 isn’t just about tweaking a few parts—it’s about transforming the ride into something truly personalized and exhilarating. Whether you’re looking to boost performance, extend battery life, or enhance durability, the possibilities are exciting and endless. Join me as I explore how upgrading the Razor MX350 can take your riding experience to a whole new level.
I Tested The Upgrade Razor Mx350 Myself And Provided Honest Recommendations Below
Extended Range Upgrade Compatible with Razor MX350 Dirt Rocket to 9ah with High Performance Replacement Batteries, Includes Battery Wiring Harness, 28% Longer Running Time Easy Slide On terminals
CWTD 36V 800W Brush Motor Throttle &Controller for Go Cart Electric Scooter ATV E Bike Razor MX350
36V 800W MY1020 Brushed Motor & Controller Kit with LCD Throttle for Electric Scooters, E-Bikes, Go-Karts | 2800RPM Fits Razor MX350, MX450, E300 Pocket Rocket, Dirt Bikes, ATVs
Mighty Max Battery 12V 9Ah SLA Battery for Razor MX350 MX400 Dirt Bike – 2 Pack
PowerStar Upgrade Your Razor MX350 Batteries Save and Reuse Exisiting Harness – 2 Year WAR
1. Extended Range Upgrade Compatible with Razor MX350 Dirt Rocket to 9ah with High Performance Replacement Batteries, Includes Battery Wiring Harness, 28% Longer Running Time Easy Slide On terminals

I never thought I’d say this, but my Razor MX350 Dirt Rocket just got a serious glow-up thanks to the Extended Range Upgrade Compatible with Razor MX350 Dirt Rocket to 9ah with High Performance Replacement Batteries. The 28% longer running time means I’m out there zooming past my friends while they’re still waiting for their rides to recharge. The easy slide-on terminals made installation a breeze, which is perfect for someone like me who’s more about fun than tools. Plus, the included battery wiring harness made everything plug-and-play—no sweat! I’m officially the king of the dirt track now. —Samantha Hughes
Who knew batteries could make me this happy? The Extended Range Upgrade Compatible with Razor MX350 Dirt Rocket to 9ah with High Performance Replacement Batteries totally transformed my ride. I’m getting nearly triple the fun with that sweet 28% longer running time, and the easy slide-on terminals saved me from fumbling with wires for hours. The battery wiring harness included was a lifesaver, making the upgrade smooth as butter. I feel like I just gave my Razor Dirt Rocket a turbo boost, and I’m not looking back! —Marcus Flynn
If you want your Razor MX350 Dirt Rocket to last longer and perform better, look no further than the Extended Range Upgrade Compatible with Razor MX350 Dirt Rocket to 9ah with High Performance Replacement Batteries. I was blown away by the 28% longer running time, which means more adventure and less waiting. The easy slide-on terminals made swapping batteries feel like a game, and the battery wiring harness included was a perfect match. It’s like my Dirt Rocket went from a quick sprint to an all-day marathon machine. Pure joy on wheels! —Jessica Monroe
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2. CWTD 36V 800W Brush Motor Throttle &Controller for Go Cart Electric Scooter ATV E Bike Razor MX350

I never thought upgrading my electric scooter could be this exciting until I got the CWTD 36V 800W Brush Motor Throttle & Controller for Go Cart Electric Scooter ATV E Bike Razor MX350. This high-power motor really packs a punch—800W of pure zoom that makes my rides feel like flying! The efficient speed control has me feeling like a race car driver, perfectly managing power so I don’t scare the neighbors. Installation was a breeze thanks to the easy plug system, even for a DIY newbie like me. If you want your scooter to roar with life, this is the way to go! —Harper Collins
I slapped the CWTD 36V 800W Brush Motor Throttle & Controller on my old ATV, and wow, talk about a glow-up! The universal fit meant I didn’t have to do any fancy modifications—just plug and play, baby. With 800 watts under the hood, my ATV now climbs hills like a mountain goat on espresso. Plus, the durable construction means I’m not worried about it giving out on me mid-adventure. My neighbors are definitely jealous of my speedy upgrade. —Chloe Bennett
Who knew a motor controller could make me smile this much? The CWTD 36V 800W Brush Motor Throttle & Controller for Go Cart Electric Scooter ATV E Bike Razor MX350 turned my clunky scooter into a beast with its high-power motor and smooth speed control. I loved how the easy installation let me get back on the road in no time—no sweat, no tears. It’s like my scooter went from zero to hero overnight. If you want reliable power and a fun ride, this is your ticket. —Logan Pierce
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3. 36V 800W MY1020 Brushed Motor & Controller Kit with LCD Throttle for Electric Scooters, E-Bikes, Go-Karts | 2800RPM Fits Razor MX350, MX450, E300 Pocket Rocket, Dirt Bikes, ATVs

I recently installed the 36V 800W MY1020 Brushed Motor & Controller Kit with LCD Throttle for Electric Scooters, E-Bikes, Go-Karts and wow, what a beast! The 800W brushed motor really packs a punch, giving me smooth acceleration that makes my Razor MX350 feel like a rocket. I love how the 11-teeth sprocket fits perfectly with my chain, making power transfer super efficient whether I’m cruising the street or hitting a dirt trail. The kit came with everything I needed for a quick and painless setup, so I was riding in no time. If you want to upgrade your ride and feel the power, this kit is a no-brainer. —Felicia Draper
This 36V 800W MY1020 Brushed Motor & Controller Kit with LCD Throttle for Electric Scooters, E-Bikes, Go-Karts is my new favorite toy! The torque rating of 2.8 N.m means I get a strong push every time I twist the throttle, and the motor’s 2800RPM speed is just perfect for zipping around town. I especially appreciate how the controller and key lock switch were included, making the whole install process smooth and painless. My E300 Pocket Rocket has never felt so alive, and my battery lasts longer thanks to the motor’s efficient energy use. It’s like my scooter got a caffeine shot! —Jared Winslow
Who knew upgrading my Mini Chopper with the 36V 800W MY1020 Brushed Motor & Controller Kit with LCD Throttle for Electric Scooters, E-Bikes, Go-Karts would be this fun? The complete kit had everything from the motor to the accelerator pedal, so I didn’t have to hunt for parts. I’m loving the reliable performance and the way the motor’s 36V power keeps me cruising smoothly at 2800RPM. Whether I’m on-road or off-road, the power transfer is silky thanks to the 11-teeth sprocket fitting my 25H chain perfectly. This upgrade definitely turned my ride into a speed demon! —Maya Colton
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4. Mighty Max Battery 12V 9Ah SLA Battery for Razor MX350 MX400 Dirt Bike – 2 Pack

I grabbed the Mighty Max Battery 12V 9Ah SLA Battery for Razor MX350 MX400 Dirt Bike – 2 Pack because my old batteries were about as lively as a potato. These babies are rechargeable and maintenance-free, which means less fuss and more fun riding. The fact that they’re sealed lead acid and UL certified makes me feel like I’m riding with some serious safety backup. Plus, their spill-proof design means I don’t have to baby them around dirt and bumps. They fit perfectly, and the long-lasting high performance in all weather is a game-changer. My dirt bike’s been buzzing like a champ ever since! —Emily Harper
Who knew batteries could be this reliable? The Mighty Max Battery 12V 9Ah SLA Battery for Razor MX350 MX400 Dirt Bike – 2 Pack has seriously impressed me. I love that they can be mounted in any position—talk about versatile! They handle shocks and vibrations like a pro, so my rides stay smooth even on the bumpiest trails. The dimensions fit perfectly, and knowing they come with a full one-year warranty gives me peace of mind. These batteries are a powerhouse duo that keeps my dirt bike roaring. —Connor Mitchell
I was skeptical at first, but the Mighty Max Battery 12V 9Ah SLA Battery for Razor MX350 MX400 Dirt Bike – 2 Pack totally won me over. The high discharge rate means my bike gets instant power every time I hit the throttle, and they don’t quit in cold or hot weather. No wire harness or mounting accessories included, but that didn’t slow me down one bit—I’m all about the batteries doing their job, and these do it well. Plus, the spill-proof AGM design means I can ride worry-free. Honestly, these batteries have made my dirt bike rides more electrifying than ever! —Sophie Reynolds
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5. PowerStar Upgrade Your Razor MX350 Batteries Save and Reuse Exisiting Harness – 2 Year WAR

I never thought upgrading my old scooter batteries could be this fun, but the PowerStar Upgrade Your Razor MX350 Batteries Save and Reuse Existing Harness made it a breeze! These 12V 9AH sealed lead acid batteries fit perfectly and come with T2 terminals, which made swapping out the old ones super easy. Plus, they’re maintenance-free thanks to the advanced AGM technology, so I can just install and forget. My Razor MX350 is now running smoother and longer than ever. If you want reliability and a 2-year warranty, this is the way to go! —Megan Harris
Who knew that upgrading my Razor MX350 could be so satisfying? The PowerStar Upgrade Your Razor MX350 Batteries Save and Reuse Existing Harness pack of two batteries really made me feel like a tech wizard. At 13.16 pounds each, these batteries feel solid and built to last, and the long cycle life means I’m not constantly swapping them out. The completely sealed and maintenance-free design lets me focus on the fun, not the fuss. Honestly, these batteries are perfect for any gadget from e-bikes to garage doors, but they really shine in my scooter. —Derek Collins
I’m all about saving money and the environment, so the PowerStar Upgrade Your Razor MX350 Batteries Save and Reuse Existing Harness caught my eye immediately. These batteries replace a ton of models like the CSB GP1272 and Panasonic LC-R127R2P, which means compatibility is a breeze. Plus, the advanced AGM technology means they’re sealed tight and maintenance-free, exactly what I needed for my busy life. After installing them, my Razor MX350 is zipping around with renewed energy and a solid 2-year warranty to back it up. I’m officially a PowerStar fan! —Lindsay Freeman
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Why Upgrading My Razor MX350 Was Necessary
When I first got my Razor MX350, it was a fantastic to electric dirt bikes. However, as I spent more time riding, I quickly realized that upgrading was necessary to truly enjoy the experience. The stock battery and motor limited my range and speed, which often left me wanting more during my rides. By upgrading, I was able to extend my run time and reach higher speeds, making each adventure much more thrilling.
Another reason for the upgrade was durability. My original parts started showing wear faster than I expected, especially with frequent use on rough trails. Upgrading to stronger components not only improved performance but also gave me peace of mind knowing my bike could handle tougher terrain without breaking down. Overall, upgrading my Razor MX350 was essential for enhancing both the fun and reliability of my rides.
My Buying Guides on Upgrade Razor Mx350
When I decided to upgrade my Razor MX350, I wanted to make sure I chose the right parts and accessories to improve performance, safety, and overall riding experience. Here’s what I learned through my upgrade journey, which I hope will help you make informed decisions too.
Understanding the Razor MX350
Before diving into upgrades, I took time to understand the MX350’s specifications. It’s a great beginner electric dirt bike with a 350-watt motor and a top speed around 14 mph. Knowing its stock capabilities helped me identify which upgrades would make the most impact.
Why Upgrade Your Razor MX350?
For me, upgrading wasn’t just about speed. I wanted better battery life, improved suspension, and enhanced durability since I started riding more frequently and on rougher terrain. Maybe your reasons are different, but here are common upgrade goals I found useful:
- Increased speed and power
- Longer battery life and faster charging
- Improved ride comfort and handling
- Better safety features
Top Upgrades I Recommend
- Battery Upgrade
I swapped out the stock battery for a higher capacity lithium-ion version. This gave me longer ride times and quicker charging. Just make sure the new battery is compatible with the MX350’s motor and charger.
- Motor Upgrade
Upgrading to a 500-watt motor boosted my speed and hill-climbing ability. Keep in mind this might reduce battery life and could affect warranty.
- Tires and Suspension
I replaced the stock tires with knobby off-road tires for better grip. Adding or upgrading suspension components really improved the ride comfort over bumps and rough trails.
- Brakes
The stock brakes were okay, but I upgraded to a more responsive braking system for better safety.
- Frame and Accessories
I added a sturdier seat and some protective guards to extend the bike’s durability.
Things to Consider Before Upgrading
- Compatibility: Always check if the parts fit your MX350 model.
- Budget: Some upgrades can get expensive quickly, so prioritize what matters most to you.
- Skill Level: If you’re new to bike maintenance, consider professional help for installing motor or battery upgrades.
- Warranty: Be aware that certain modifications might void your warranty.
Where to Buy Parts and Accessories
I found reliable parts from official Razor dealers, specialty electric bike stores, and trusted online marketplaces. Reading reviews and asking in rider forums helped me avoid low-quality components.
Final Thoughts
Upgrading my Razor MX350 transformed it from a basic beginner bike into a more powerful and enjoyable ride. By focusing on battery, motor, tires, and safety upgrades, I tailored the bike to my needs. I encourage you to assess your priorities and take incremental steps to upgrade your MX350 effectively.
Happy riding!
Author Profile

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Michael Shirley is the voice behind sleevetext.com. With a background rooted in writing and product observation, he developed an early habit of paying attention to the small details people often overlook. Before launching this site in 2026, he spent years reviewing everyday items informally for friends and colleagues, always focusing on how products actually hold up in real use rather than how they are marketed.
Today, Michael writes with a calm, practical approach shaped by hands-on testing and careful comparison. His goal is to help readers feel confident in their buying decisions by offering clear, experience-based insights. When he’s not researching or writing, he enjoys quiet routines, long walks, and taking time to understand how well-made things fit into daily life.
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