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Razor MX125 vs MX350 Comparison

In this article, we compare the Razor MX125 vs MX350 electric dirt bikes.

Both are entry level, small bikes aimed at younger children who are seeking the thrill of an electric bike but who lack the experience or size to ride a larger model with more advanced features.

Our guide below will show you which is the most suitable for your child. First we’ve got a quick comparison table of the main features of the Razor MX125 vs MX350.

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 MX125 vs MX350 – Quick Comparison

The Razor MX350 was our Budget Choice when we reviewed the best electric dirt bikes for kids and youths recently. But the MX125 is a great alternative if your child is a bit younger. 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, to make it easy to see the differences between them.

 Razor MX125Razor MX350
Razor MX125 Dirt RocketRazor MX350 Dirt Rocket
DescriptionRazor's smallest electric dirt bike with single speed, no suspension and single rear brakeSmall electric dirt bike with single speed, no suspension and single rear brake
Age Range4-8 * (see note below table)5-10 * (see note below table)
Weight
Limit
110 lbs140 lbs
Top Speed8 mph14 mph
PriceMSRP $210See on Amazon
Battery
System
12V sealed lead acid - charger included24V (2 x 12V) sealed lead acid - charger included
Battery
Life
Up to 40 minutes of continuous useUp to 30 minutes of continuous use
Battery Recharge
Time
6 hours12 hours
Motor and
Gearing
100W, high torque, chain driven350W, 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 Height17"20"
HandlebarsCross bar reinforced style with foam gripsAdjustable angle, riser style, with soft rubber grips
Tires12" pneumatic knobby12" pneumatic knobby
Assembled
Dimensions
36.42” L x 21.46” W
x 25.16” H
44" L x 24.5" W
x 31" H
Assembly
Time
15 minutes15 minutes

* Note on Age: Razor’s recommended age for the MX125 is 7+ but this is very conservative. An age range of 4-8 (real world guide from many buyers) with parental supervision may be more suitable. Because it is so small – the Razor MX125 seat height is 17″ so older kids would fit better on its bigger brother, the MX350.

Likewise, Razor’s recommended age for the MX350 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. It is bigger than the MX125 but is still a small bike with a seat height of just 20″ – for comparison, a youth size bike may have a seat height around 34″.

See the videos in the next section below for a real world view of the appropriate ages for these bikes.

Main Differences

The biggest difference between both dirt bikes is the size and age of rider that each was designed for.

The Razor MX350 is the bigger brother of the MX125 – its frame is 21% longer, 14% wider and 22% higher. The MX350 also supports a heavier rider (140 lbs vs 110 lbs) and so is more suitable for older children – Razor recommend age 13+ for the MX350 compared to 7+ for the MX125.

Thanks to a more powerful motor (350W vs 100W) and extra battery (24V vs 12V), the top speed of the Razor MX350 is much higher than the MX125 (14 mph vs 8 mph). However, the battery recharge time is 12 hours compared to 6 hours for the MX125 and the MX350 has a shorter ride per full charge (30 minutes vs 40 minutes)

The MX350 also has adjustable angle, riser style handlebars whereas the MX125 has cross bar reinforced style handlebars.

Advantages of Razor MX125 Dirt Rocket

Razor MX125 Dirt Rocket
  • Good size for very young children – the Razor MX125 seat height is 17″ which is 3″ lower than the MX350
  • MSRP (Manufacturer’s Suggested Retail Price) is about $120 cheaper than the MX350
  • Battery recharge time is 50% less than the MX350 (6 hours vs 12 hours)
  • Battery life is 33% higher than the MX350 (40 minutes vs 30 minutes) so kids can have more fun before it runs out of power
  • Smaller frame than the MX350 so it requires less storage space and is easier to transport

Advantages of Razor MX350 Dirt Rocket

Razor MX350 Dirt Rocket
  • Better size for larger and older kids – the seat is about 3″ higher than the MX125 and the frame is up to 22% larger
  • It can carry a heavier rider than the MX125 (maximum load of 140 lbs vs 110 lbs)
  • More powerful motor provides a much faster top speed (14 mph vs 8 mph)
  • Adjustable angle handlebars allow for a more comfortable sitting position
  • 1 extra color option than the MX125 (red, blue or black vs only blue or black)

Check price on Amazon

Pros of Both Bikes

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

  • Specifically designed for young children with user friendly controls
  • Quick enough to give kids a fun ride but 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 off-road
  • Rear-wheel drive ensures greater traction, stability and balance
  • Steel frame with authentic motocross frame geometry
  • Single speed (simple stop/go) is easier for kids to handle than variable speed
  • 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 or 40 minutes is still enough to cover about 7 miles (MX350) or 5 miles (MX125) respectively
  • Battery full recharge time is 6 – 12 hours so charging needs to be planned. Or you could buy spare batteries and switch over instantly
  • No headlights or rear lights so can only be driven in daylight
  • No suspension can make for a less comfortable, bumpy ride if ridden off-road
  • Helmet and protective clothing may be uncomfortable in hot weather (see our Electric Dirt Bike Buying Guide for recommended safety gear)
  • 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

A much smaller frame and lower maximum weight capacity may make the MX125 a good choice for very young kids, especially those who are small for their age and new to dirt bikes. However, we worry that kids may grow out of it all too quickly, due to its very small size and relatively slow speed.


Owner’s Manuals

The owner’s manual for the Razor MX125 Dirt Rocket is available in PDF format from Razor here.

The owner’s manual for the Razor MX350 Dirt Rocket is available in PDF format from Razor here.

NOTE: A parent’s decision to allow their child to ride either the Razor MX125 or the Razor MX350 should depend on the child’s individual maturity, skill and ability to follow rules.