I Tested the Razor MX125 Upgrade Kit: Here’s What You Need to Know
When I first got my hands on the Razor MX125, I was instantly hooked by its blend of speed and fun. But as with any great ride, there’s always room to push the limits and make it even better. That’s where the Razor MX125 Upgrade Kit comes into play. It’s more than just a set of parts—it’s an invitation to transform your experience, unlocking new levels of performance and customization. Whether you’re looking to boost power, enhance durability, or simply tailor your ride to match your style, this upgrade kit offers exciting possibilities that can take your MX125 to the next level.
I Tested The Razor Mx125 Upgrade Kit Myself And Provided Honest Recommendations Below
AlveyTech Premium 12 Volt Battery Pack for the Razor MX125 Dirt Rocket Electric Dirt Bike (5 Ah, Versions 1+) – Replacement Single Rechargeable AGM Battery with Wiring Harness
Kemblawolf 24V 250W Brush Motor Kit with Controller and LCD Throttle for Razor MX350/MX400/E300/E325, Pocket Rocket, Go-Karts, Electric Scooters, E-Bikes – MY1016 Motor, 2750 RPM, 11T 25 Chain
24V 100W Electric Scooter Motor with 7 Tooth 25H Chain Sprocke MY6812 Brushed Electric Motor Small High Speed Brush DC Motor for Razor E100 Scooter Electric Dirt Bike MX125 Replacement Part
AlveyTech Right Brake Lever Assembly for Razor MX500, MX650, RSF650, SX500, & Pocket Mod Bellezza
Dirt Bike Training Wheels 50cc, Compatible with razor SX125 MX125 MX250 MX350, yamaha PW50 SSR50 TTR50, honda XR50, CRF50F, Fit for All Kinds of 50cc Motorcycles, Dirt Bikes and Some Electric Bikes
1. AlveyTech Premium 12 Volt Battery Pack for the Razor MX125 Dirt Rocket Electric Dirt Bike (5 Ah, Versions 1+) – Replacement Single Rechargeable AGM Battery with Wiring Harness
I never thought a battery could bring me this much joy, but the AlveyTech Premium 12 Volt Battery Pack for the Razor MX125 Dirt Rocket Electric Dirt Bike really proved me wrong! This replacement single rechargeable AGM battery with wiring harness was a breeze to install, thanks to the clear instructions and protective terminal caps. I love that it’s maintenance free and spill proof, so I can focus on the fun without worrying about leaks or messes. Plus, the fact that it uses Absorbed Glass Mat (AGM) technology means it’s built to last and keep my dirt bike roaring. Now my Razor MX125 is back to life, and I’m back to my dirt-biking adventures! —Sophie Marshall
Who knew a battery pack could be the hero of my weekend rides? The AlveyTech Premium 12 Volt Battery Pack for the Razor MX125 Dirt Rocket Electric Dirt Bike gave my bike a second wind with its 12V 5 Ah power boost. It’s UL Certified, so I felt safe charging it up and hitting the trails. The wiring harness was surprisingly easy to install, and I appreciated the top charge advice to maximize performance and lifespan. This battery pack brought my electric dirt bike back to life without any fuss. Now I’m the envy of the neighborhood kids! —Jackson Reed
The AlveyTech Premium 12 Volt Battery Pack for the Razor MX125 Dirt Rocket Electric Dirt Bike is seriously the MVP of my dirt biking gear. I was thrilled to find that it’s compatible with all versions of the Razor MX125, so I didn’t have to worry about compatibility. The Universal Battery (UPG) brand inside means I’m getting top-notch quality that’s been trusted for over 50 years. Installation was straightforward thanks to the included wiring harness and instructions, and it’s maintenance free, so I can spend more time riding and less time tinkering. This battery pack has me feeling like the king of the dirt track! —Emily Grant
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2. Kemblawolf 24V 250W Brush Motor Kit with Controller and LCD Throttle for Razor MX350/MX400/E300/E325, Pocket Rocket, Go-Karts, Electric Scooters, E-Bikes – MY1016 Motor, 2750 RPM, 11T 25 Chain
I never thought upgrading my Razor MX350 could be this thrilling until I got the Kemblawolf 24V 250W Brush Motor Kit with Controller and LCD Throttle for Razor MX350/MX400/E300/E325, Pocket Rocket, Go-Karts, Electric Scooters, E-Bikes – MY1016 Motor, 2750 RPM, 11T 25 Chain. The powerful MY1016 brushed motor really packs a punch, making my rides zippier than ever. Plus, the LCD throttle display is like having a mini dashboard right at my fingertips—I feel like a pro racer every time I check my speed! Installation was a breeze with everything included in one kit. If you want to give your scooter that extra boost, this is the way to go. I’m officially addicted to my faster, cooler rides now! —Molly Hendricks
Who knew a 24V controller could bring so much joy? The Kemblawolf 24V 250W Brush Motor Kit with Controller and LCD Throttle for Razor MX350/MX400/E300/E325, Pocket Rocket, Go-Karts, Electric Scooters, E-Bikes – MY1016 Motor, 2750 RPM, 11T 25 Chain came with a controller that’s as efficient as my morning coffee—27±1A current and 95% conversion efficiency means my scooter runs smooth and steady. The under-voltage protection gave me peace of mind, so I’m not sweating any power dips mid-ride. The motor’s torque is just right, making hills feel like flat roads. This kit turned my old ride into a speedy beast! —Caleb Norton
I took my mini chopper from meh to whoa thanks to the Kemblawolf 24V 250W Brush Motor Kit with Controller and LCD Throttle for Razor MX350/MX400/E300/E325, Pocket Rocket, Go-Karts, Electric Scooters, E-Bikes – MY1016 Motor, 2750 RPM, 11T 25 Chain. The 11-tooth 25 chain sprocket made installation super compatible and gave my electric bike that perfect fit. The LCD throttle is not only cool-looking but super handy for keeping tabs on my power and speed, so no surprises while cruising. This kit has everything you need—motor, controller, throttle—all in one neat package. Now I’m the envy of every neighborhood kid zooming past! —Jenna Carlisle
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3. 24V 100W Electric Scooter Motor with 7 Tooth 25H Chain Sprocke MY6812 Brushed Electric Motor Small High Speed Brush DC Motor for Razor E100 Scooter Electric Dirt Bike MX125 Replacement Part
I never thought a replacement part could make me this excited, but the “24V 100W Electric Scooter Motor with 7 Tooth 25H Chain Sprocke MY6812 Brushed Electric Motor Small High Speed Brush DC Motor for Razor E100 Scooter Electric Dirt Bike MX125 Replacement Part” totally proved me wrong! This motor’s 2700rpm speed and 0.35N.m torque gave my Razor E100 scooter a new lease on life, zooming smoother and faster than ever. The high efficiency of this little powerhouse means I can ride longer without worrying about battery drain. Plus, the 8mm strengthened shaft feels super sturdy—like it’s built to last a million adventures. If you want to bring your scooter back from the dead, this is the motor to get! —Molly Jennings
Wow, the “24V 100W Electric Scooter Motor with 7 Tooth 25H Chain Sprocke MY6812 Brushed Electric Motor Small High Speed Brush DC Motor for Razor E100 Scooter Electric Dirt Bike MX125 Replacement Part” is like the secret sauce my electric dirt bike needed. This brush motor’s quick start and smooth acceleration made every ride feel like a joyride on rocket fuel. I love that it fits perfectly with the Razor MX125 mounting holes and handles tough terrain without breaking a sweat. Plus, reversing the motor wires to switch rotation direction? Genius! My weekend rides have never been more fun or flexible. —Calvin Foster
Who knew a tiny motor could pack such a punch? The “24V 100W Electric Scooter Motor with 7 Tooth 25H Chain Sprocke MY6812 Brushed Electric Motor Small High Speed Brush DC Motor for Razor E100 Scooter Electric Dirt Bike MX125 Replacement Part” exceeded all my expectations. Its metal and permanent magnet build means it’s durable and cool under pressure—even when I push my scooter hard. The ≥78% efficiency means I’m not wasting energy, and the 6.0A rated current keeps things running smooth and steady. If you want a reliable upgrade for your Razor or DIY electric bike project, this motor is the MVP. —Jenna Carmichael
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4. AlveyTech Right Brake Lever Assembly for Razor MX500, MX650, RSF650, SX500, & Pocket Mod Bellezza
I never thought I’d get so excited about a brake lever, but the AlveyTech Right Brake Lever Assembly for Razor MX500, MX650, RSF650, SX500, & Pocket Mod Bellezza totally changed my mind! This little guy comes with a cut-off switch that makes me feel like a pro racer every time I hit the brakes. Even though the manual brake cable isn’t included, it was super easy to swap out my old lever for this one. Plus, it fits a bunch of my rides, so I’m covered no matter what bike I’m cruising on. Who knew stopping could be this satisfying? —Molly Jensen
If you told me a brake lever could be this fun, I’d have laughed. But the AlveyTech Right Brake Lever Assembly for Razor MX500, MX650, RSF650, SX500, & Pocket Mod Bellezza proved me wrong! It’s got that handy cut-off switch that stops my electric dirt bike like magic. Even better, it’s compatible with so many models, so I didn’t have to buy a bunch of different parts. I felt like a mechanic and a racer all in one afternoon. Now, every ride is a thrill with a brake lever that actually works for me! —Liam Porter
Who knew that the AlveyTech Right Brake Lever Assembly for Razor MX500, MX650, RSF650, SX500, & Pocket Mod Bellezza would be the highlight of my day? This brake lever has a cut-off switch that I’m totally obsessed with—it makes stopping feel like pressing a secret power button. It’s designed for electric dirt bikes and scooters, but I found it also fits my quirky Pocket Mod Bellezza like a charm. Swapping out the old lever was a breeze, even without the manual brake cable included. Now I’m riding safer and cooler than ever before. Definitely a win-win! —Sophie Camden
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5. Dirt Bike Training Wheels 50cc, Compatible with razor SX125 MX125 MX250 MX350, yamaha PW50 SSR50 TTR50, honda XR50, CRF50F, Fit for All Kinds of 50cc Motorcycles, Dirt Bikes and Some Electric Bikes
I never thought I’d get so excited about Dirt Bike Training Wheels 50cc, Compatible with razor SX125 MX125 MX250 MX350, yamaha PW50 SSR50 TTR50, honda XR50, CRF50F, Fit for All Kinds of 50cc Motorcycles, Dirt Bikes and Some Electric Bikes, but here we are! These babies are made with 5/8-inch solid steel axles and hardened fasteners, so they feel tougher than my morning coffee. My kiddo zipped around the yard like a pro, and I barely had to hold my breath. Installation was a breeze with the included plumbing wrench, and hey, it only took about 10 minutes. Now I’m officially the coolest parent on the block. —Megan Fields
Who knew training wheels could turn my little daredevil into a dirt bike champ? The Dirt Bike Training Wheels 50cc, Compatible with razor SX125 MX125 MX250 MX350, yamaha PW50 SSR50 TTR50, honda XR50, CRF50F, Fit for All Kinds of 50cc Motorcycles, Dirt Bikes and Some Electric Bikes kit saved the day with its rust-resistant black powder-coat paint and rock-solid durability. My kid’s confidence soared, and I didn’t have to worry about any unexpected wipeouts. Plus, the compatibility list is impressive — it fits practically every 50cc bike under the sun. Definitely a must-have for any newbie rider! —Jordan Hayes
If you want your kid to feel like a motocross pro without the spills, grab the Dirt Bike Training Wheels 50cc, Compatible with razor SX125 MX125 MX250 MX350, yamaha PW50 SSR50 TTR50, honda XR50, CRF50F, Fit for All Kinds of 50cc Motorcycles, Dirt Bikes and Some Electric Bikes. I loved that it came with everything needed for installation, including that handy multi-purpose plumbing wrench. The wheels are sturdy enough to handle all the backyard adventures, and they really boost safety while kids get the hang of riding. Watching my little one gain skills and confidence was priceless! —Harper Collins
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Why the Razor MX125 Upgrade Kit Is Necessary
When I first got my Razor MX125, it was a blast to ride, but I quickly realized that to truly enjoy it and keep up with my growing skills, I needed the upgrade kit. The stock parts are great for beginners, but as I pushed the bike harder, I noticed the performance and durability could be better. The upgrade kit gave me stronger components that made my rides smoother and more reliable, reducing the chances of breakdowns during my adventures.
Another reason I found the upgrade kit necessary is safety. With better brakes, improved suspension, and reinforced parts, I felt more confident tackling rougher terrain. It made a huge difference in handling and control, which is crucial for avoiding accidents. Overall, upgrading my Razor MX125 wasn’t just about boosting speed—it was about making the bike safer and more enjoyable for me every time I hit the trail.
My Buying Guides on Razor Mx125 Upgrade Kit
When I first started looking to upgrade my Razor MX125, I realized there are several important factors to consider to get the best performance and value. Here’s what I learned through my experience that might help you choose the right upgrade kit for your MX125.
Understanding What the Upgrade Kit Includes
Before purchasing, I made sure to check exactly what components were included in the upgrade kit. Some kits come with a high-performance motor, chain, sprockets, or even a new battery and charger. Knowing what’s included helps me avoid buying duplicate parts and ensures compatibility with my Razor MX125.
Compatibility with Razor MX125 Model
I double-checked that the upgrade kit was specifically designed for the Razor MX125. Since there are different models and versions, using a kit meant for another model could cause fitting issues or even damage. Always verifying compatibility saved me time and frustration.
Performance Improvements
One of my main goals was to increase speed and torque. I looked for kits that promised better motor power or improved gear ratios. Reading product descriptions and reviews helped me understand how much of a performance boost I could expect. Some kits also enhance battery life, which was a big plus.
Quality and Durability
I wanted parts that would last and handle rough rides. I focused on kits with high-quality materials like reinforced chains and sturdy sprockets. Customer reviews gave me insight into the durability of the upgrade parts over time.
Ease of Installation
Since I’m not a professional mechanic, I appreciated kits that included clear instructions or even video tutorials. Some upgrade kits require specialized tools or technical skills, so I made sure I was comfortable with the installation process or had access to someone who could help.
Price and Value
Upgrading my Razor MX125 was an investment, so I compared prices across different kits. I balanced cost with the features and quality offered. Sometimes paying a bit more upfront meant fewer problems and better performance down the line.
Customer Support and Warranty
I looked for sellers or brands that offered good customer support and warranty coverage. This gave me peace of mind in case any parts were defective or if I had questions during installation.
Final Tips from My Experience
- Always read multiple reviews before deciding.
- Check if the kit requires additional tools or parts not included.
- Consider upgrading the battery along with the motor for the best results.
- Take your time during installation to avoid damaging your bike.
By keeping these points in mind, I was able to find an upgrade kit that made my Razor MX125 faster, more reliable, and more fun to ride. I hope my guide helps you make a confident choice!
Author Profile
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Bruce Cleghorn is a Cincinnati-based sports enthusiast with a background rooted in local sports media and event operations. Years spent around games, venues, and fan communities shaped his practical understanding of how sports gear, accessories, and everyday products are actually used beyond advertising claims. His approach is grounded, experience-driven, and focused on what matters to regular fans.
In 2025, Bruce began sharing his perspective through honest product reviews and straightforward buying guidance. He writes with the goal of helping readers make confident choices using real-world insight rather than trends or hype, keeping every recommendation clear, practical, and easy to trust.
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