Wanna unlock the real power hiding inside your Razor? You’re in the right place. If you’ve been wondering how to make a Razor electric dirt bike go faster, this guide is your new best friend. 🛠️ Whether you’re a speed-hungry teen, a DIY parent, or just curious about electric dirt bike performance, this is where real results start.
We’re not just throwing out random hacks — this is about practical, proven methods that actually make your Razor faster. Think smarter upgrades like battery boosts, motor tweaks, and gear changes that transform your ride without blowing it up 🔥. If you ride an MX350, MX500, or even the powerhouse MX650, you’re about to learn exactly how to make a Razor electric dirt bike go faster in a way that’s smart and sustainable.
This guide is packed with actionable tips, tech insights, and safety-first strategies. No need to guess or dig through sketchy forums — we’ve done the homework for you. From higher voltage batteries to controller upgrades and everything in between, we’ll walk you through each option with clarity and real-world advice.
You’ll also get the scoop on what not to do — because knowing what can fry your motor is just as important as knowing what’ll give you that sweet extra MPH. ⚡ And yep, we made sure everything here makes sense for both beginners and more advanced riders.
So if your goal is to figure out once and for all how to make a Razor electric dirt bike go faster, let’s dive into it. Because the speed you’re looking for? It’s just a few smart mods away. 😎
But hey — if this is your first time touching an electric dirt bike, start by checking our beginner’s breakdown of what an electric dirt bike actually is. You’ll thank us later!
Key Takeaways
- Boosting your Razor’s top speed is possible with battery upgrades, gear changes, and motor/controller improvements.
- We break down exactly how to make a Razor electric dirt bike go faster — safely and effectively.
- Learn what to tweak and what to leave alone to avoid damaging your ride or risking safety.
⚡ Here’s What You’ll Learn in This Guide: Use the quick links below to jump to the section you need most 👇
How Razor Electric Dirt Bikes Work (And Why They’re Speed Limited)
Before we dive into all the juicy upgrades, it’s crucial to understand how these bikes tick. If you want to master how to make a Razor electric dirt bike go faster, knowing the basics of its drivetrain and electronic components gives you a huge head start.
Electric dirt bikes from Razor — like the MX350, MX500, and MX650 — are powered by a combo of motor, controller, battery, and throttle. Each of these parts has a built-in limit that determines how fast your bike can go. 🚲⚡
The Power Core: Motor, Battery & Controller
Let’s break it down:
- Motor: Most Razor electric dirt bikes use a brushed DC motor. These are reliable but not super powerful. They’re limited in torque and RPMs.
- Battery: Typically lead-acid (SLA), with voltages like 24V or 36V depending on the model. The voltage affects speed directly — higher voltage = higher speed.
- Controller: This is the brain. It controls how much power flows from the battery to the motor. Even if your battery is powerful, a weak controller will cap the output.
Knowing this setup helps you better understand how to make a Razor electric dirt bike go faster — because every component plays a role in your speed potential.
Why Razor Caps the Speed by Default
There’s a reason why the top speed of most Razor bikes is capped between 14–17 mph.
- 🛡️ Safety: These bikes are designed for kids and teens. Slower speeds reduce injury risks.
- ⚙️ Motor lifespan: High speeds can overheat and damage the motor if the internals aren’t upgraded to match.
- 🧑🔧 Warranty control: Razor wants to keep things within tested, safe limits. Tinkering often voids the warranty — just a heads-up!
Still, these limits don’t mean you’re stuck forever. Once you understand the architecture, it’s easier to modify intelligently. That’s where we get into the real fun: actually learning how to make a Razor electric dirt bike go faster by tweaking the exact parts that control speed.
By mastering these fundamentals, you’re now ready to explore real-world upgrades — safely and confidently.
Stay with us, because in the next section we’ll break down 7 real and effective ways to boost your Razor’s speed 🚀
7 Real Ways to Make Your Razor Electric Dirt Bike Go Faster
Alright, now that you know how your Razor’s system works, let’s get into the real meat: the mods. If you’re serious about learning how to make a Razor electric dirt bike go faster, these 7 methods will put you ahead of the pack.
We’re talking legit performance upgrades here — not myths or wishful thinking. These are the tweaks that riders in the community swear by, and they actually work. Just be sure to always balance speed with safety ⚠️
1. Upgrade the Battery Voltage (Safely)
One of the easiest and most powerful ways to increase speed is by upping the voltage of your battery. Razor bikes are voltage-sensitive, which means a higher voltage = faster top speed.
For example, upgrading an MX350 from 24V to 36V can give you a noticeable boost in speed. The MX500 and MX650 respond even better when bumped to 48V.
But here’s the catch — your controller must also support the higher voltage. Otherwise, you risk damaging the system 💥
Also consider switching from SLA (sealed lead acid) batteries to Li-ion or LiFePO4. They’re lighter, charge faster, and deliver more consistent power output.
If you’re still asking how to make a Razor electric dirt bike go faster, this is your first big step.
2. Swap the Rear Sprocket
Changing your gear ratio can drastically affect speed. Going with a smaller rear sprocket reduces torque but increases your top speed. It’s like shifting into a higher gear.
This mod works best for riders who ride mostly on flat ground and don’t need a ton of low-end power.
Make sure you align the chain properly and don’t go too extreme — it’s all about balance ⚙️
3. Upgrade the Controller
Think of the controller as the “governor” of your bike. Even if you’ve got a powerful motor and upgraded battery, a stock controller will still limit your speed.
Upgrading to a high-amp controller allows more current to reach the motor. This means better throttle response, more torque, and yes — more speed 💨
If you’re chasing results and still wondering how to make a Razor electric dirt bike go faster, this mod will unleash the full potential of your battery and motor.
For a deeper technical explanation of how motor controllers work and how to select the right one, check out this comprehensive guide to electric motor controllers by ExplainThatStuff. It’s a great breakdown even if you’re not super tech-savvy.
4. Use High-Performance Tires
Believe it or not, your tires make a difference. Switching to low-resistance street-style tires or hybrids reduces friction and helps the bike roll more efficiently.
Plus, they look sleek 😎
If you’re mostly riding on pavement or hard-packed trails, this is an easy performance boost that pairs well with other mods.
5. Strip Extra Weight
The lighter the bike, the faster it can go. Ditch any unnecessary parts like heavy plastic fairings, oversized seats, or bulky fenders.
Less weight = better acceleration and more range. Even reducing the rider’s gear weight can make a difference when squeezing out every MPH 🔧
This tip often gets overlooked, but when you’re figuring out how to make a Razor electric dirt bike go faster, efficiency mods count too.
6. Upgrade the Throttle
The throttle controls how power is delivered from the battery to the motor. A better quality throttle can give you smoother acceleration and a more immediate response.
Look for a twist or thumb throttle with improved sensitivity. It won’t directly raise your top speed, but it will improve ride control and unleash your upgraded components more effectively.
7. Install a Higher-Speed Motor (Advanced)
This one’s not for beginners, but if you’re really going all-in, you can replace the stock motor with a more powerful aftermarket motor. Look for motors that support higher RPMs and match your upgraded battery and controller setup.
Companies like Electro & Co offer performance motors that fit Razor frames. Just know this route takes time, money, and technical skill 🧠
But if you’re still chasing peak speed and asking how to make a Razor electric dirt bike go faster — this is the endgame mod.
Next up: how to keep your ride from overheating or breaking down as it goes faster than ever!
Safety Tips When Modifying for Speed
Now that you’ve got a solid list of upgrades in your toolkit, it’s time for a quick reality check. Learning how to make a Razor electric dirt bike go faster is exciting — but doing it safely is what keeps the fun going.
Pushing your Razor past factory limits means everything from your brakes to your wiring will be under more stress. So before you unleash that extra speed, here’s what to double-check.
Watch for Overheating
When you increase voltage or current, your motor and controller can start to heat up — fast. Overheating shortens the lifespan of your components and can even melt wires or fry electronics 🔥
To avoid this:
- Use a controller with thermal protection
- Add ventilation or heat sinks to high-temp areas
- Take breaks on long rides or hill climbs
Keeping your system cool means your upgrades will last longer and perform better over time.
Upgrade the Brakes
More speed = more stopping power needed. Stock Razor brakes are made for stock speeds — and if you’re now hitting 20+ mph, that might not cut it anymore ⚠️
Consider upgrading to:
- Hydraulic disc brakes for smoother, stronger stopping
- Better brake pads for more grip and longevity
Teaching young riders how to handle faster speeds with proper braking is just as important as any performance mod.
Reinforce the Frame and Chain
Adding more power to your system increases strain on the drivetrain and frame. You don’t want your chain snapping mid-ride or your frame cracking from stress.
Here’s how to keep things solid:
- Tension the chain properly after any gearing or motor upgrade
- Check welds and mounts regularly for signs of fatigue
- Consider reinforcing key frame points if you go high-voltage
This is especially important for heavier riders or when pushing your Razor past 48V.
Ride Responsibly
Speed mods make your Razor feel more like a pro-level dirt bike. But it’s still a lightweight electric vehicle, and rider awareness matters.
- Always wear protective gear (helmet, gloves, pads)
- Don’t let inexperienced kids ride heavily modified bikes unsupervised
- Ride in safe, legal areas where higher speeds are allowed
Knowing how to make a Razor electric dirt bike go faster is awesome — just make sure everyone riding is trained and ready to handle it.
Up next: How to test your upgrades and actually measure your new top speed.
Bonus: Testing Your Upgrades (Before & After Speed Tests)
So you’ve done the mods, installed that beefier battery, maybe swapped in a high-amp controller — but now what? It’s time to actually test how much faster your Razor is running. Because knowing how to make a Razor electric dirt bike go faster means proving it, not just feeling it.
Speed tests help you track real performance gains and identify any weak links in your setup. Here’s how to test your upgrades like a pro.
Use a GPS Speedometer App
Forget guessing — your phone is your best friend here. Download a GPS-based speedometer app like:
- Speedometer Simple
- Ulysse Speedometer
- Drag Racer Car Performance
Mount your phone securely to the handlebars (or put it in a backpack) and hit a stretch of open space. 🛣️ Compare the numbers before and after each mod.
Look for real MPH differences — not just “it feels faster.” This is how you validate whether that new controller or gearing change actually works.
Test on Flat Ground First
To get the most accurate read on speed:
- Use flat pavement or hard-packed dirt
- Avoid windy days or steep hills
- Keep tire pressure consistent
Once you know your top speed on flat terrain, you can measure how much incline affects your performance.
This is especially helpful when dialing in torque vs speed trade-offs, which are common when modifying sprockets.
Track Acceleration, Not Just Top Speed
It’s not all about max MPH. A lot of mods that help you figure out how to make a Razor electric dirt bike go faster also improve acceleration and throttle response.
Try timing:
- 0–10 mph
- 0–top speed
Use a stopwatch or an app with performance timers. Faster takeoff can totally change how your Razor feels in trail or street situations.
Watch for Warning Signs
During your tests, pay attention to:
- Battery temperature (warm is fine — hot is not)
- Motor noise changes (grinding or whining can mean stress)
- Brake fade or slower stopping
Speed is fun, but if something doesn’t feel right — stop. 🚨 Testing is just as much about finding limits as it is about celebrating gains.
Next: we’ll dig into some of the most common questions riders ask when tweaking their Razor for speed. Let’s clear up the confusion.
Real-World FAQs (People Also Ask)
Modding a Razor electric dirt bike is exciting, but if you’re just diving in, you’ve probably got questions. A lot of people researching how to make a Razor electric dirt bike go faster run into the same doubts, and we’re here to clear those up with straight answers.
These FAQs are based on what real users are typing into Google, Reddit, and rider forums — no fluff, just real talk.
Can I put a 48V battery in my MX350?
Technically, yes — but it’s not plug-and-play. The MX350 is designed for 24V, so going to 48V means you’ll need to:
- Replace the stock controller with one rated for 48V
- Possibly upgrade the motor to handle the higher voltage
- Modify the battery compartment to fit larger cells
Done right, this mod can seriously improve speed. But it also increases the risk of overheating and shortens the life of stock components. Always monitor heat and use fuses for protection 🔧
What’s the top speed of a stock Razor MX650?
Out of the box, the Razor MX650 tops out around 17 mph. It runs a 650W motor on a 36V battery system with a fairly conservative controller.
With upgrades like a 48V battery, improved gearing, and a high-amp controller, riders have reported speeds of 25–30 mph. That’s a solid gain if you’re learning how to make a Razor electric dirt bike go faster without totally rebuilding it.
Is it legal to modify my Razor dirt bike?
This depends on local laws. In most areas, off-road use on private property is fair game, and mods are totally fine. But if you’re riding in public areas, parks, or on the street, modifying speed might push your bike outside legal limits.
Some areas cap e-bike speeds at 20 mph or 750W motors. Be aware and ride responsibly — especially if younger riders are involved.
Will these mods void my warranty?
Yes, pretty much guaranteed. Razor’s warranty doesn’t cover user modifications. So once you start swapping batteries or controllers, you’re on your own for repairs.
That said, if you know what you’re doing and want to get serious about performance, it’s a trade-off many riders are happy to make 💥
Can I reverse the changes if needed?
Absolutely. Most upgrades are reversible, especially if you:
- Keep the original parts stored safely
- Use plug-and-play connectors when possible
- Avoid permanent frame alterations
This flexibility is helpful if you’re just experimenting with how to make a Razor electric dirt bike go faster and want to dial things back later.
Coming up next — we’ll link you back to our complete beginner’s guide and wrap things up with a quick share request if this guide helped you out.
Still Learning the Basics? Start Here
If all this talk about batteries, gearing, and controllers feels a bit overwhelming, don’t worry — everyone starts somewhere. Before going all-in on mods, make sure you’ve got a solid grasp of what makes an electric dirt bike tick.
We’ve put together a complete beginner’s guide that breaks down the fundamentals of electric dirt bikes — from how the motor works to choosing the right model for your rider’s size and skill level.
If you’re serious about understanding how to make a Razor electric dirt bike go faster, it’s worth reading that first. It’ll give you the technical foundation to make smarter upgrade decisions and avoid costly mistakes.
👉 Check out our full guide here: What Is an Electric Dirt Bike?
Share Your Ride and Join the Conversation
Tried out one of these upgrades? Hit a new top speed? Or maybe you’re just getting started on your modding journey and want some feedback?
We’d love to hear from you!
Drop a comment below and let the community know what worked for you — or what didn’t. Your experience could help someone else who’s figuring out how to make a Razor electric dirt bike go faster without trial and error.
If this guide helped you out, do us a favor:
- Share it with a fellow rider or parent who’s in the Razor scene
- Post it in your favorite electric dirt bike group or forum
- Tag us in your next ride video so we can see your Razor in action ⚡
Every share helps us grow this DIY dirt bike community and bring even more content like this your way. Let’s build faster, safer, and smarter bikes — together.
Tyler Brooks is the storyteller behind most of the content at Electric Dirt Zone. With over 10 years of experience in digital media and a lifelong love for off-road riding, he blends technical insight from the team with engaging, down-to-earth writing. When he’s not turning dusty trail rides into blog posts, you’ll probably find him snapping pics before things get too wild.
