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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

  • Based on 1,690 reviews
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Availability: In Stock.
Fulfilled by Spreetail
Arrives Sunday, Sep 28
Order within 2 hours and 21 minutes
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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

Get ready for thrilling off-road adventures with the Razor Dirt Rocket MX400 Electric Dirt Bike. Designed for teens aged 13 and up, this scaled-down dirt bike brings the excitement of off-road riding to younger riders. Featuring a high-torque, chain-driven motor, the MX400 can reach speeds up to 14 mph, providing an exhilarating experience on dirt tracks and trails. The Dirt Rocket MX400 is built to withstand rugged use, with a durable steel frame and shatter-resistant plastic fairings that ensure long-lasting performance. Its large 12-inch pneumatic knobby tires provide maximum power transfer and a smooth ride on various terrains. The bike's adjustable-angle riser handlebars and soft rubber grips offer comfort and control, allowing riders to maneuver with ease. With a twist-grip throttle and hand-operated rear brake, the MX400 offers precise speed control and reliable stopping power. Powered by a 24V (two 12V) sealed lead-acid rechargeable battery system, the MX400 provides up to 30 minutes of continuous use on a single charge, with a battery charge time of 12 hours. The Razor Dirt Rocket MX400 measures 44"L x 24.5"W x 31"H and supports riders up to 140 lbs, making it the perfect first dirt bike for young adventurers. The bike comes with a battery charger included, ensuring that the fun never has to stop for long. Whether it's a quick ride around the neighborhood or an off-road escapade, the MX400 is designed to deliver top- notch performance and endless excitement. Choose the Razor Dirt Rocket MX400 Electric Dirt Bike and let your teen experience the thrill of off-road riding. With its authentic dirt bike geometry and powerful motor, this bike embodies the spirit of adventure and fun. Get ready to kick into high gear and explore new terrains with the Razor MX400!

Product Dimensions: 43.7 x 27.95 x 21.65 inches


Item Weight: 48.2 pounds


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: Sunday, Sep 28

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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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • GREAT DIRTBIKE!
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
    • Great Quality!
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
    • Awesome toy for kids up to 7-8 years old
Color: Black
These bikes are tough as nails! Do wish the battery was lithium being 2025 already. But all in all really well built. My 6 year old loves it and rides it daily.
Reviewed in the United States on July 23, 2025 by Bianca
    • Help on Sizing This Bike
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
    • Good starter bike
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
    • My kids love this
Color: Green
Review Image by James James
Easy to assemble, and excellent sturdy build. I was initially skeptical that my oldest kid would be too big at 9 years old, but he fits just fine as does my 7 year old. They have a lot of fun on this, and the battery life has been excellent. It's easy to use and would be good for kids probably 5-12 years in age. ... show more
Reviewed in the United States on October 9, 2024 by James James
    • Buyer Beware
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
    • Good bike
Color: Black
This is the Best dirt bike please Buy it
Reviewed in the United States on June 4, 2025 by Deymi

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