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 MX125	Razor MX350
Description	Razor's smallest electric dirt bike with single speed, no suspension and single rear brake	Small electric dirt bike with single speed, no suspension and single rear brake
Age Range	4-8 * (see note below table)	5-10 * (see note below table)
Weight Limit	110 lbs	140 lbs
Top Speed	8 mph	14 mph
Price	See at Amazon	See at Amazon
Battery System	12V sealed lead acid - charger included	24V (2 x 12V) sealed lead acid - charger included
Battery Life	Up to 40 minutes of continuous use	Up to 30 minutes of continuous use
Battery Recharge Time	6 hours	12 hours
Motor and Gearing	100W, high torque, chain driven	350W, high torque, chain driven
Throttle	Single speed, twist grip	Single speed, twist grip
Brakes	Hand operated rear band (i.e. drum) brake	Hand operated rear band (i.e. drum) brake
Suspension	None	None
Seat Height	17"	20"
Handlebars	Cross bar reinforced style with foam grips	Adjustable angle, riser style, with soft rubber grips
Tires	12" pneumatic knobby	12" 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 minutes	15 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″.

Tip: if you’re worried about kids falling off as they learn to ride, you can buy Razor dirt bike training wheels which fit either model (and larger models). They are height adjustable so you can raise them an inch or two as your kiddo becomes more proficient.

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.

Check out the video below for a real world view of the size of the larger Razor MX350 Dirt Rocket with 7 and 4 year old boys riding:

For comparison, the video below shows the smaller Razor MX125 Dirt Rocket:

Advantages of 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

Check price at Amazon

Advantages of 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 at 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.

We think the MX350 is a better choice for most young ones – the larger frame, adjustable angle handlebars and higher top speed mean that it should be a suitable size to last kids for several years. Adding training wheels may be a good idea for little ones, until they have found their feet.

Owner’s Manuals

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

The Razor MX350 Dirt Rocket owner’s manual 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.