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Razor

Razor MX400 Dirt Rocket Electric Bike for Kids Ages 8+, 140 Pounds Max Weight, Green – 24-Volt Battery, up to 14 Mph, 30-Minute High Speed Ride Time, Twist-Grip Throttle, 12-Inch Pneumatic Tires

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Availability: In Stock.
Fulfilled by Spreetail
Arrives Sunday, Mar 29
Order within 17 hours and 8 minutes
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Style: MX400


Color: Green


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 enhanced 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.

Item Weight: 62.5 pounds


Item model number: 15128530


Manufacturer recommended age: 0 - 13 years


Is Discontinued By Manufacturer: No


Manufacturer: Razor USA, LLC


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Mar 29

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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • GREAT DIRTBIKE!
Style: MX400 Color: Black
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
    • 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 Quality!
Style: MX400 Color: Green
Great Product! My son is 7 and there is a missing market for this age group. Power wheels are slow and boring and for them and bog down with more weight. This is fast enough that its exciting but not so fast that he gets seriously hurt. (We've already taken a few spills) I will say that it is quite heavy and the one time he was unable to lift the bike up off his leg so parental supervision is required. I think it's very small for the age group it recommends. My 12 year old tried it and while enjoyed it as well looked like a giant sitting on it. I was more worried about her being top heavy and falling than my son. With the weight limit I took a ride and I've got to say it I was impressed that it didnt seem to bog down even with me on it. This bike is super easy to assemble. And feels very sturdy and of great quality. The tires are rubber air tires unlike cheap plastic tires and seamless goes over different terrains. However, it does take the full 12 hours to charge the first time and I feel it took almost as long to charge each time after that. My son rides for about 10 to 20 minutes at a time, many times throughout the day and I feel the buttery does last almost all day this way. Overall, this is totally worth the money for many hours of enjoyment and the happiest kid in the world. ... show more
Reviewed in the United States on December 31, 2019 by Parker
    • 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
    • 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
    • Buyer Beware
Style: MX400 Color: Green
I bought this electric dirt bike for my grandson as a Christmas present. After he opened it and was charged it for the recommended amount of time he took it outside for a ride. It ran for approximately 6 minutes then stopped working. We took it back in and put it back on the charger thinking it didn’t charge all the way. The next day he tried to ride it again and it lasted for 4 minutes (I timed it) this time. I contacted the seller and let them know what was going on and they offered to exchange it, refund us or give us a discount. I chose to return it for a refund. They sent us a shipping pre paid shipping label and said I would get a refund when they received the package. Perfect, no problem, everything was good. Until we got a message from them saying they were refunding $135 and charging a restocking fee of over $200 because the bike had been used. Of course it’s been used, for approximately 11 minutes, until it didn’t work anymore. How else would we know the bike was defective if it wasn’t used, makes no sense. I will never buy this bike again and I will never buy anything from this seller again. I would give a rating of 0 for this seller but I don’t have that option. ... show more
Reviewed in the United States on January 9, 2025 by Lee
    • Ermasa
Style: MX400 Color: Green
Review Image by Eblin Bueso Eblin Bueso
Salió más k perfecta 🤩 me encanta mi niño está feliz
Reviewed in the United States on February 15, 2026 by Eblin Bueso Eblin Bueso
    • Perfect for my 5yo
Style: MX400 Color: Green
Bought this for my 5yo birthday. He's had it for a few months now and rides it almost every day. He's average size so this pulls his weight easily. Have a few steep hills around our 1 acre yard and this climbs them easily. A 8yo girl in the neighborhood sometimes rides it and it won't pull her up the hill, but she's a little heavy set for her age. My boy gets especially excited when we go riding on the street, it's nearly as fast as my electric e-bike but not quite, which is good because sometimes I need to catch up with him. We ride a couple miles a day usually, 30-40min at most, and keep it charged everyday, so no issues with battery so far. He really appreciates having it. ... show more
Reviewed in the United States on November 18, 2023 by Brian Crocker

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