But How Fast Does a Razor Dirt Bike Go?

Razor is reputable for making some of the most ride-friendly dirt bikes for kids and adults. Their dirt bikes aren’t the speediest, making them safer than most of their competition. But how fast does a Razor dirt bike go?

250w and 350w Razor dirt bikes average a top speed of 14mph, while 500w and 650w options can hit 15 and 17 mph, respectively, under perfect conditions. Overall, their top speed depends on the motor size, rider’s weight, terrain, range, and battery runtime.

Considering that these dirt racing engines average under 20mph, they are pretty safe to ride. They are available in motocross and street bike options– meaning there is a Razor dirt bike for every terrain.

Let’s understand the factors that determine how fast Razor dirt bikes go and the top speeds of the various models.

Here we go!

Factors Determining How Fast a Razor Dirt Bike Goes

Essentially, a Razor dirt bike’s top speed depends on these five factors:

1. Motor Size

Like other dirt bikes, Razor dirt bikes’ top speed depends on the motor size. Bigger motor capacities promise more speed and sometimes a longer runtime.

For example, while a 250w dirt bike can hit 14mph, a 500w option can clock 15mph under perfect conditions. However, you can expect a 650w Razor dirt bike to reach a top speed of 17 mph.

Interestingly, Razor dirt bikes with a bigger motor size don’t just go faster, but they also have a longer battery runtime. For instance, while 250w dirt bikes have a 30-35 minutes run time, 500w and 650w razor dirt bikes average 40-50 minutes on a full charge.

Here’s a table showing how the various Razor dirt bikes’ motor sizes compare:

Razor Dirt Bike Motor Size	Top Speed (mph)	Top speed (kph)	Runtime
250w	14mph	22.5kph	30 – 35 min
350w	14mph	22.5kph	30 – 35 min
500w	15mph	24kph	40 min
650w	15–17mph	24-27kph	40 – 50 min

2. Rider’s Weight

All Razor dirt bikes come with a load limit. While you shouldn’t exceed the load limit, the lighter you are, the likelier you will go faster. You, however, shouldn’t be too lightweight as it’ll be hard to control the dirt bike.

3. Terrain

Razor dirt bikes come in motocross (MX and SX) and street riding (RSF) options to suit varying terrains. A Razor MX or SX dirt bike will only reach its top speed on dirt racing and motocross tracks, and a Razor RSF model will get there on the street.

So, it’s important to match yourself with a Razor dirt bike designed for your preferred terrain. For example, a Razor MX350 will only reach 14 mph on motocross and dirt racing tracks.

Consider getting the Razor RSF350 to hit such speed on the streets. Likewise, you cannot hit 14 mph off-road with an RSF350 as with an MX350.

4. Runtime

Having mentioned the runtime before, it’s worth insisting that it dictates how long a Razor dirt bike can run at top speed. None of the Razor electric dirt bikes can go more than 50 minutes on a single charge.

However, note that these dirt bikes won’t go at a constant top speed for 30-50 minutes. They’ll probably hit maximum speed for half the time.

5. Range

Let’s now talk about the range (travel distance). Generally, more powerful engines (larger motors) have a more extended range to match their high speed.

However, the faster you go, the shorter the runtime and the range. So, you cannot expect to travel at a top speed throughout.

According to Type, How Fast Does a Razor Dirt Bike Go?

Having looked at the factors determining a Razor dirt bike’s top speed, let’s now look at the maximum speed of its top-selling models. That includes the following:

MX350
SX350
RSF350
MX400
MX500
SX500
RS650
MX650

How Fast Does a Razor Mx350 Go?

The Razor MX350 Dirt Bike (View on Amazon) enjoys a maximum speed of 14 mph under perfect conditions. Since it’s a motocross dirt bike, the ideal conditions are motocross and dirt racing tracks.

This dirt bike has a range (travel distance) of 7 miles and enjoys a maximum run time of 30 minutes. Its 14 mph top speed is mainly due to its powerful 250w single-speed motor and 24v lead-acid battery.

The Razor dirt bike generally suits riders from 13 years with a maximum weight of 140 pounds (or 63kg). Overall, this electric dirt bike is a perfect off-road choice that your young adventurer will relish riding.

1. How Fast Does a Razor SX350 Go?

Razor SX350 (View on Amazon), like Razor MX350, can hit a maximum speed of 14 mph under perfect conditions. And just like its sibling, the ideal conditions are off-road.

The Razor SX350 also enjoys a 7-mile range and a 30-minute maximum runtime, just like the MX350. All that range and runtime are owing to its 250w single-speed motor and 24v lead-acid battery.

The electric-powered dirt bike is perfect for young riders from 13 years and not exceeding 140 pounds. It’s inspired by arguably the most iconic motocross rider, Jeremy McGrath. So, your kid will be getting an iconic dirt bike when you get the Razor SX350.

2. How Fast Does a Razor RSF350 Go?

Now, while Razor MX350 and SX350 are ideal for off-road riding, Razor RSF350 (View on Amazon) is best for street riding. On the street, this Razor dirt bike can hit a top speed of 14 mph.

The street dirt bike has a maximum battery runtime of 35 minutes and a maximum travel range of 8 miles.

So, it’s perfect for getting around town on short distances. The impressive speed is due to its powerful 250w single-speed motor and 24v lead-acid battery.

The street dirt bike is perfect for young riders aged 13 years and above and not exceeding 140 pounds.

3. How Fast Does a Razor MX400 Go?

The Razor MX400 (View on Amazon) is another top-performing motocross racing dirt bike with a top speed of 14 mph. This dirt bike, like SX350, MX350, and RSF350, enjoys a 24v battery, but its motor size is 350w.

Due to a slightly bigger motor, the dirt bike enjoys a travel range of 10 miles. It has a maximum battery runtime of 30 minutes. This dirt bike can also take the sidewalks and streets even though its most preferred terrain is off-road.

It’s perfect for riders starting from 13 years but with a maximum weight of 140 pounds.

4. How Fast Does the Razor Sx500 Go?

The Razor SX500 (View on Amazon) is another fantastic motocross racing dirt bike inspired by the legendary Jeremy McGrath. The dirt bike enjoys a running time of 40 minutes and averages a top speed of 15 mph under perfect conditions.

It’s perfect for teens starting from 14 years and adults averaging under 175 pounds. It comes with a powerful 36v lead acid battery that gives it a slightly longer runtime.

The electric motocross bike is comfortable to ride, owing to its pneumatic tires, riser handlebars, and dual suspension.

5. How Fast Does a Razor MX500 Go?

Razor MX500 (View on Amazon) promises a maximum speed of 15 mph under perfect motocross racing conditions. The motocross dirt bike has a 40-minute runtime owing to its 36v lead-acid battery, and the reason for its impressive top speed is its 650-watt variable speed motor.

The Razor dirt bike is best for riders starting from 14 years but with a maximum weight of 175 pounds. With its battery taking up to 12 hours to charge and having a 40-minute runtime, the dirt bike is only best for short adventures off-road.

The dirt bike is comfortable for teens and adults owing to dual suspension, soft rubber grips, and pneumatic tires.

6. How Fast Does a Razor Mx650 Go?

Razor MX650 (View on Amazon) enjoys a top speed of 17 mph, making it the fastest Razor dirt bike alongside Razor RS650.

Primarily, that’s owing to its powerful 650w variable speed motor. The dirt bike has a 36v battery, giving it a 40-minute runtime on a single charge.

The dirt bike is best for riders starting from 16 years, making it perfect for teens and adults. Its load capacity, however, is 220 pounds, making it one of the strongest Razor electric dirt bikes.

Razor MX650 is generally equipped to take on the off-road, making it the ultimate motocross choice. But still, you can take the streets, which makes it an all-terrain choice.

7. How Fast Does a Razor RS650 Go?

The Razor RS650 (View on Amazon) promises a top speed of 17 mph, owing to its 650w variable speed electric motor.

It comes with a combined 36v battery, giving it a runtime of 50 minutes. That makes it the longest-range Razor dirt bike.

Razor RS650 is ideal for riders starting from 16 years and can bear a maximum load of 220 pounds. So, it’s the ultimate choice for heavy teens and adults.

The dirt bike enjoys a modern street geometry, riser handlebars, and a low-profile windscreen that allows you to enjoy the most comfortable street-riding experience.