As an Amazon Associate we earn from qualifying purchases. See our Disclosure page for details.

Razor MX350 vs MX400 Comparison

In this article, we compare the Razor MX350 vs MX400 electric dirt bikes. Both are popular choices if you want to treat the young speed freak in your family to a well specified dirt bike.

First we have a quick comparison table of the main features of the Razor MX350 vs MX400. Then we look at the main differences between them and the advantages of each dirt bike, in turn.

Finally, we’ll summarize the pros and cons of both rides, to help you make the right choice for your kids, and for you.

Razor MX350 vs MX400 – Quick Comparison

These bikes were our top Budget Choice when we reviewed the best electric dirt bikes for kids and teens recently.

Let’s take a closer look at how they compare against each other. In the table below we’ve summarized the main features of each bike in a side by side comparison and highlighted the differences in bold.

Note: the only difference in these features is the color availability – but there are some other differences which we will review in more detail in the next section.

 Razor MX350Razor MX400
Razor MX350 Dirt RocketRazor MX400 Dirt Rocket
DescriptionSmall electric dirt bike with single speed and rear brakeSmall electric dirt bike with single speed and rear brake
Age Range5-10 * (see note below table)5-10 * (see note below table)
Maximum Load140 lbs140 lbs
Maximum
Speed
14 mph14 mph
PriceCheck Price on AmazonCheck Price on Amazon
ColorsRed, Black, BlueRed, Black, Green, White
Battery
System
24V (2 x 12V) sealed lead acid - charger included24V (2 x 12V) sealed lead acid - charger included
Battery
Life
Up to 30 minutes of continuous useUp to 30 minutes of continuous use
Battery Recharge
Time
12 hours12 hours
Motor and
Gearing
350W, high torque, chain driven 350W, high torque, chain driven
ThrottleSingle speed, twist gripSingle speed, twist grip
BrakesHand operated rear band (i.e. drum) brakeHand operated rear band (i.e. drum) brake
SuspensionNoneNone
Seat Height20"20"
HandlebarsAdjustable angle, riser style, with soft rubber gripsAdjustable angle, riser style, with soft rubber grips
Tires12" pneumatic knobby12" pneumatic knobby
Product Weight62 lbs62 lbs
Assembled
Dimensions
44" L x 24.5" W
x 31" H
44" L x 24.5" W
x 31" H
Assembly
Time
15 minutes15 minutes

* Note on Age: Razor’s recommended age for both the MX350 and the MX400 is a highly conservative 13+ but an age range of 5-10 (real world guide from many buyers) with parental supervision may be more suitable. Because these dirt bikes are very small – the seat height of 20″ is about 14″ lower than a regular, adult sized dirt bike.

Check out the video in the next section to see 4 and 7 year old boys on these bikes – most teens just aren’t going to fit…

Main Differences

Razor say that these bikes are “the same model, just a different color” but this is not the whole story…

The Razor MX350 and MX400 have the same features and technical specifications but there are many styling and cosmetic differences. The MX400 has the On/Off switch on the side of the battery cover whereas the MX350 has it on top, between the handlebars and seat (where the MX400 has a fake gas cap).

The MX400 has a more realistic (less boxy) battery cover than the MX350 and its fairings are a very different shape. The MX400 is the newer model and has an extra covering around its throttle and brake cables for better protection and a more streamlined look.

The MX400 comes in a wider selection of colors (red, black, green or white) whereas the MX350 is available in only red, black or blue.

Advantages of Razor MX350 Dirt Rocket

Razor MX350 Dirt Rocket

Both these bikes have identical tech specifications so there aren’t many advantages compared to the MX400:

  • MSRP (Manufacturer’s Suggested Retail Price) is about $20 cheaper than the MX400 – but check the actual price below

Check price on Amazon

Advantages of Razor MX400 Dirt Rocket

Razor MX400 Dirt Rocket

Likewise, the MX400 doesn’t have too many advantages over the MX350:

  • Available in 4 colors (only 3 color options for the MX350)
  • Sometimes on offer cheaper than the MX350 but check the actual price below

Check price on Amazon

Pros of Both Bikes

Here is a summary of what we love about both models:

  • Specifically designed for very young children
  • User friendly controls
  • Adjustable angle handlebars can adapt to fast growing kids
  • Quick enough to give an adrenaline rush
  • Slow enough (compared to gas dirt bikes) to minimize risk of a high speed crash
  • Knobby rubber pneumatic tires (unlike plastic tires of cheap bikes and ride on toys) can tackle many ground conditions including some light off-roading
  • Steel frame with authentic motocross frame geometry
  • No pollution (compared to a gas dirt bike)
  • Quieter than a gas dirt bike and requires much less servicing
  • Razor is a long established US manufacturer – spare or replacement parts are readily available from their website

Cons of Both Bikes

Here is a summary of what we don’t like so much about both models. But most of these issues are common to all electric dirt bikes in this price range:

  • Relatively short battery life. But 30 minutes is still enough to cover 7 miles
  • Battery full recharge time is up to 12 hours so charging needs to be planned (or buy a spare pair of batteries to switch over instantly)
  • No reverse gear – can be awkward to maneuver backwards
  • No headlights or rear lights – can only be driven in daylight
  • Not intended for use on public streets
  • Helmet and protective clothing (see our Electric Dirt Bike Buying Guide for recommended safety gear) may be uncomfortable in hot weather
  • Must be stored in a dry area, due to the electrical components
  • Batteries must not be stored in temperatures below freezing and should be recharged at least once a month

Conclusion

Both these dirt bikes are a great choice for younger kids but they are almost identical – it is tough to pick a winner between them.

So which model is best? Unless you really need a particular color that is only available on one of them, the ideal choice depends mostly on price and availability.

If prices were the same, we’d choose the MX400 as it is the newer model and we prefer its design of battery cover – it looks more realistic and less boxy. But if prices were different we’d just choose the cheapest…

Tip: for older or larger kids, check out our comparison of the Razor MX350 vs MX500 – the MX500 is the big brother of the MX350 and MX400 with a 20% larger frame and 4″ higher seat so it should be more suitable for kids aged 8-14.


Owner’s Manuals

As the Razor MX350 and MX400 are so similar they share the same owner’s manual – it is available in PDF format from Razor here.

NOTE: A parent’s decision to allow their child to ride either the Razor MX350 or the Razor MX400 should depend on the child’s individual maturity, skill and ability to follow rules.