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Razor

Razor MX400 Dirt Rocket Electric Bike for Kids Ages 8+, 140 lb Max Weight, White – 24V Battery, Up to 14 Mph, 30-Min Ride Time on High Speed, Twist-Grip Throttle, Spoked Wheels w/ 12” Pneumatic Tires

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Availability: Only 8 left in stock, order soon!
Fulfilled by Spreetail
Arrives Friday, Feb 13
Order within 7 hours and 14 minutes
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Style: MX400


Color: White


Features

  • Charge Up the Trails: Hit speeds up to 14 mph and feel the rush on a high-torque, chain-driven electric motocross bike built for gentle hills, dirt paths, and backyard adventures
  • Tough Enough for Kids: Steel frame with authentic dirt bike geometry, double-crown fork, and shatter-resistant plastic fairings stand up to grassy hills, playground slopes, and playful terrain
  • Comfort in Command: Soft rubber grips, adjustable-angle riser-style handlebars, twist-grip throttle, and rear brake give you control, comfort, and confidence every ride
  • For the Long Haul: Up to 30 minutes of continuous run time on high speed, supports up to 140 pounds, ages 8+ years old, with 12-inch pneumatic knobby tires for serious grip
  • Safety in the Fast Lane: Hand-operated brakes, folding metal foot pegs, and a retractable kickstand keep your ride both thrilling and secure, just the way a Dirt Rocket ride should be

Description

Designed to deliver just the right amount of power for gentle hills and offroad trails, the Razor MX400 Dirt Rocket is ready for adventure. This ride- on is built to handle dirt paths and backyard fun and is a supercross-inspired electric motocross motorcycle bike that gives young riders the muscle to climb hills and enjoy trails at speeds up to 14 miles per hour. With a high-torque chain-driven rear-wheel drive motor, this bike delivers smooth, rider-focused performance without the mess of gas, so you can go green while you go fast. Comfort and control meet head-on with soft rubber grips, a double-crown fork, and adjustable riser handlebars let you dial in the fit and stay steady on the terrain. Twist-grip acceleration puts the throttle where your instincts are, while hand-operated rear brake bring confident stopping power. Folding metal foot pegs and shatter-resistant fairings add durability for real off-road riding. Keep the good runs coming with the rechargeable 24-volt (two 12-volt) sealed lead-acid battery system delivers up to 30 minutes of continuous ride time per charge on high speed mode while 60 minutes on low speed and includes a battery charger for easy recharging between sessions. Designed for extended play, the MX400 balances power and endurance so you spend more time ripping and less time waiting for a charge. Rugged spoked wheels with 12-inch pneumatic knobby tires bite into dirt, gravel, and grass for superior traction. With a 140-pound maximum rider weight and recommended for kid riders 8 years old and up, the MX400 fits young ones who are ready to step up their game. Some assembly is required but once it’s together, it’s time to leave the pavement behind and own the trail.

Product Dimensions: 43.7 x 27.95 x 21.65 inches


Manufacturer recommended age: 0 - 8 years


Batteries: 2 12V batteries required. (included)


Is Discontinued By Manufacturer: No


Manufacturer: Razor


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Feb 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Learn more about financing & leasing here.

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Top Amazon Reviews

    • Razor mx500
Style: MX500 Color: Red
An excellent first dirtbike. Get this one. Pretty much any kid can hop on this and have a good time. I reccomend it for the five or six year old to nine or so age group. The box says like 12 or 14, but thats just a big responsible company covering their arses. Its a great learner, because its just twist and go. All hand brakes, no foot controls, which is good when learning because your feet arent always on the pegs. It's a proportional bike for kids so its not awkward or clumsy it fits them right. Dont get any smaller razor dbike, they dont have suspension. This one is very much like a real bike, suspension, handling, disc brakes, etc. Electric, but power ramps up so you cant do a wheelie. Because its electric, it is a little heavy, but that keeps them from getting too much air as well. Hundreds of hours of fun, and zero injuries. If you crash in the grass, you weren't going real fast, and are pretty close to the ground, so it dont hurt much. Rated up to like 175 pounds (again i recommend it for the 45-90 pound kid range) but ive hopped on it (210#) to put it away, and theres no problems. Batterys are standard lead-acid closed cell, so they are safe and reliable. The charge only lasts a half hour or so which is the only downside really. ... show more
Reviewed in the United States on November 18, 2025 by HeWhoWalksBehindTheRows
    • GET THIS FOR THE KIDS!
Style: MX400 Color: Green
Review Image by Lindsey H Lindsey H
Bought this a year ago for my 5 year old for a Christmas present. 1 year later he still uses this EVERYDAY! Set up was easy. He’s now about 4 foot tall and 60lbs and still enjoys it just as much as the first day! Great product. NO SUSPENSION WHAT SO EVER! Never the less my son tries to jump curbs with it. The speed setting is honestly perfect as we live inside city limits and it can’t get away from him! Perfect “first dirtbike” experience! ... show more
Reviewed in the United States on December 10, 2025 by Lindsey H Lindsey H
    • GREAT DIRTBIKE!
This is an awesome dirtbike for the price! It's so much fun and works great for littler kids. It goes about 20 mph and it works great on our dirtbike path which is up and downhill. The battery last pretty well but best to charge at night. It's so awesome to see the kids zipping around the trail and having the best time ever. It feels really safe and that was a big factor for us in deciding between the gas and electric dirtbikes. I highly recommend this! ... show more
Reviewed in the United States on July 31, 2025 by Aeryn Elizabeth
    • Quality
Style: MX400 Color: Green
My Grandson loves this little bike. Just the right speed for a 9 year old. Great quality.
Reviewed in the United States on December 12, 2025 by Kim Bass
    • Help on Sizing This Bike
Style: MX400 Color: Green
All in all this is a great little bike. I love the look, features, ease of assembly, battery life etc. The thing I had the hardest time deciding was which model to get, meaning what size. The 350/400 is SMALL. There is no way in the world a 13 or 14 year old would be happy with this bike as the manufacturer specs say. Do not let that age spec influence you at all when deciding which one to get. This bike would fit a 7 yr old MAX and more realistically this is PERFECT for a 4-6 year old. I could see not wanting a 4yr old going 15mph but with a little practice this is the way to go for that age. Also its about 60lbs but remember all the rider has to do is tilt it up vertical, not lift the whole bike. I bought the 350/400 (350 and 400 are the same size, not sure why they have 2 numbers for same bike) for my 8 year old and it was way too small. He liked it but as soon as he saw it he thought it was small, after an hour of riding asked if he could get a bigger one. I ended up returning it and getting the MX500 which is perfect for my just turned 8 year old. I can see him riding this for a least a couple years . Its about 100 lbs but no issue at all for him to stand up. I also considered going another size up to the 650 but I think that would have been too big. Hopefully this helps. I also added some LED rechargeable lights to the front and back as it doesn't come with any type of lights. All is all a great series bike for all experience of riders, just pick the right one. ... show more
Reviewed in the United States on January 4, 2021 by Travis Day
    • A Well-Built and Fun Off-Road Ride
Style: MX500 Color: Red
Review Image by Richard Currier Richard Currier
Powerful, Quiet, and Surprisingly Durable — Perfect for Off-Road Fun As someone who enjoys outdoor rides but wanted something electric and compact for my daughter, the Razor MX500 Red Dirt Rocket has exceeded expectations. It delivers impressive power, quiet operation, and just enough edge to make you forget it’s not gas-powered. ⚙️ Performance & Speed Don’t let the "youth" label fool you — this bike packs a punch. It easily handles gravel, dirt, and small hills, and the chain-driven motor with high torque gives it real muscle. I clocked top speeds close to 15–17 mph, which feels fast when you’re riding something this nimble. 🔋 Battery Life On a full charge, I get around 35–40 minutes of continuous use, depending on terrain and rider weight. It takes about 8–10 hours to recharge fully, so I usually plug it in overnight. 🛠 Build Quality This isn’t a toy — the steel frame, dual suspension, and large pneumatic knobby tires make it feel like a real dirt bike. It’s stable, well-balanced, and absorbs bumps smoothly. The front and rear disc brakes also work great and give you solid stopping control. 🧑🤝🧑 Who It's For Though marketed for teens, it comfortably supports up to 175 lbs. I’d say it’s best for: Teenagers 13+ who are responsible riders Adults under 170 lbs looking for funl off-road ride Beginners wanting an intro to dirt biking without gas or noise 👍 Pros Surprisingly powerful motor Smooth ride with good suspension Durable and well-constructed Quiet and environmentally friendly Great value for the price 👎 Cons Long charge time No headlight or reflectors (consider mods for visibility) Slightly small for taller adults 📦 Final Verdict The Razor MX500 is an outstanding entry-level electric dirt bike for anyone wanting thrills without fumes. It’s well-built, performs reliably, and offers just enough punch to feel exciting. Highly recommended for teens or lightweight adults looking to tear up the trails in silence. ... show more
Reviewed in the United States on July 23, 2025 by Richard Currier Richard Currier
    • Good starter bike
Style: MX400 Color: Red
So much easier than maintaining a PW50 and so far our grandson loves it. He is 6 and it is a little small for him, but we will upgrade to the next model soon enough.
Reviewed in the United States on September 16, 2025 by Amazon Customer

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