2023 DR-Z400S. Mx 400 dirt bike

23 DR-Z400S

The 2023 DR-Z400S is the latest version of the motorcycle that is the foundation of the modern DualSport movement. Starting with the DR350S and then again with the DR-Z400S, Suzuki makes fun, dependable, and capable motorcycles available to anyone who is ready to take a ride down their favorite off-road trail or ribbon of asphalt.

Riders will be impressed with the amount of torque coming from the 398cc, liquid-cooled powerplant, as well as the crisp handling from the adjustable suspension. This ultra-reliable bike is completely street legal, with an electric start and.


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Key Features

Compact, liquid-cooled, 398cc, single engine produces widespread power

Electric starting and street-legal lighting

Narrow and strong chrome-moly frame

Fully adjustable, off-road capable suspension

Black, spoke-style wheels with 21- and 18-inch aluminum rims

Engine Features

A compact design, 398cc, DOHC, liquid-cooled, dry-sump engine produces strong low-rpm power. Its compact, four-valve cylinder head features large 36mm intake valves and 29mm exhaust valves to help produce broad, tractable power and torque that’s ready for any terrain.

Simple electric starting via a lightweight starter motor with an automatic mechanical decompression system.

Suzuki Composite Electrochemical Materials (SCEM) cylinder is durable and lightweight and provides superior heat transfer.

Digitally-mapped DC-CDI system monitors throttle position/engine rpm and adjusts ignition timing to maintain efficient combustion.

Forged aluminum piston is 10 percent lighter than a cast piston and receives additional oil-cooling through a crankcase oil jet.

Fed by a six-liter air box, the Mikuni 36mm carburetor incorporates a deceleration enricher circuit to help provide smooth throttle response when accelerating or engine braking.

The left side body cover has quick-release fasteners for easy access to the air filter.

The use of a PAIR (air supply) system to the exhaust helps the motorcycle achieve emissions compliance without affecting performance.

Magnesium-alloy clutch, magneto, and cylinder head covers contribute to the bike’s low weight.

Thermostatically-controlled cooling fan mounted to the left radiator helps maintain consistent operating temperature.

Transmission Features

Compact, five-speed transmission utilizes a cable-operated clutch with a separate magnesium outer cover for simplified clutch maintenance.

Low-maintenance, long-life sealed O-ring type drive chain produces minimal sounds when riding.

Chassis Features

A narrow frame combines thin chrome-moly steel tubes for exceptional torsional rigidity with minimal weight. The backbone tube, front down tube, and steering head gussets form the dry-sump engine oil tank. A bolt-on aluminum sub-frame helps reduce weight and simplify maintenance.

Long travel (11.3-inch), 49mm cartridge-style fork has protective rubber boots plus adjustable compression/rebound damping and adjustable spring preload for smooth performance on all types of on- and off-road terrain.

Rear shock absorber features 11.6 inches of travel, compression damping/preload adjustments, and connects to a lightweight aluminum swingarm through a progressive linkage system.

Spoke-style 21-inch front and 18-inch rear wheels with new blacked-out aluminum rims are fitted with dual-purpose tires. The wheels are sized perfectly to accept popular dual sport tires and are set up to accept rim-locks when a more aggressive tread pattern is used.

Sure stopping power is supplied by a 250mm front disc with a dual-piston caliper and a 220mm rear disc brake with a single-piston caliper.

Special design mirrors rotate to avoid damage in case of impact.

A pouch on the rear fender carries the tool kit, owner’s manual, or other cargo.

Off-road inspired Suzuki Champion Yellow or Solid Black bodywork has daring contrasting graphics.

Electrical Features

Electric start system provides convenient operation and features a lightweight starter motor and a compact, 6.5-amp, maintenance-free battery.

Compact digital instrument cluster includes speedometer, odometer, twin-trip meters with addition/subtraction capability, clock, timer, and stopwatch functions.

On-road legal lighting includes bright 60/55-watt H4 halogen headlight, compact tail/stoplight, lightweight, rubber-mounted turn signals, and horn.

Additional Features

Genuine Suzuki Accessories include a low-profile seat, cargo rack, handguard set, and more.

12-month limited warranty. Longer coverage periods with other benefits available through Suzuki Extended Protection (SEP).

Subject to separate coverage for certain parts and the exclusions and limitations described in the New On-Road Motorcycle Limited Warranty.


  • Clutch Wet multi-plate
  • Transmission 5-speed constant mesh
  • Final Drive Chain, RK520KZ0, 112 links
  • Suspension Front Telescopic, coil spring, oil damped, adjustable damping force
  • Suspension Rear Link type, coil spring, oil damped, adjustable spring preload and damping force
  • Brakes Front Disc brake, single rotor
  • Brakes Rear Disc brake, single rotor
  • Tires Front 80/100-21 M/C 51P, tube type
  • Tires Rear 120/90-18 M/C 65P, tube type
  • Fuel Tank Capacity 10.0 L (2.6 US gal.) / 9.5 L (2.5 US gal.) CA model
  • Color Champion Yellow No. 2 or Solid Black
  • Ignition Electronic ignition (CDI)
  • Spark Plug NGK CR8E or DENSO U24ESR-N
  • Headlight 12V 60/55W (H4)
  • Tail Light 12V 21/5W
  • Overall Length 2310 mm (90.9 in.)
  • Overall Width 875 mm (34.4 in.)
  • Overall Height 1230 mm (48.4 in.)
  • Wheelbase 1485 mm (58.5 in.)
  • Ground Clearance 300 mm (11.8 in.)
  • Seat Height 935 mm (36.8 in.)
  • Curb Weight 144 kg (317 lb.)
  • Warranty 12-month limited warranty.
  • Extension Longer coverage periods with other benefits available through Suzuki Extended Protection (SEP)
2023, dr-z400s, dirt, bike

Get A Quote

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For your safety, always wear a helmet, eye protection, and protective clothing when riding any motorcycle or ATV. Never ride under the influence of alcohol or other drugs. Study your owner’s manual and always inspect your Suzuki before riding. Take a riding skills course. For the MSF street course nearest you, call 1-800-446-9227. Off-road riders can enroll in the DirtBike SchoolSM by calling 1-877-288-7093. ATV riders can call the SVIA at 1-800-852-5344 and we’ll even pay for the training. Suzuki engineered the GSX-Rs Hayabusa, and the QuadSport Z400 for experienced riders.

Specifications, appearances, equipment, color, features, materials and other items of “SUZUKI” products shown are subject to change by manufacturer at any time without notice.

Suzuki, the “S” logo, and Suzuki model and product names are Suzuki Trademarks or © 2023 Suzuki Motor USA, LLC.

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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.

2023, dr-z400s, 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

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.

Check out the video below for a real world view of the Razor MX350 (or MX400 as it’s the same size) with 7 and 4 year old boys riding:

Advantages of Razor MX350 Dirt Rocket

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

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

Advantages of 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

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


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

2023, dr-z400s, dirt, bike

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

If 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 were different for each model we’d just choose the cheapest…

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.

Razor MX350 vs MX400 – Which to Choose for Your Kid?

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The Razor MX350 and the MX400 are both scaled-down electric bikes for younger riders. Both of them have speeds of 14mph, which is enough for your juniors to live out their off-road fantasies.

These two models are quite popular as first bikes for kids, and you will be torn between which one to take. They have minor differences between them, and it is up to you to decide which one to purchase.

Differences Between MX350 MX400 Razor Dirt Bikes

The MX350 and the MX400 go by differing names in the market, so there have to be some distinctions between them, which include:


Color is the most visible differences between the models. The MX350 comes in the colors black and blue while the MX400 can be bought in either red or green. You can choose either of the models based on the colors your little one likes the most or which one they will respond to the most.

New Model

When it comes to release dates, the MX400 is the newer of the models. Being a newer version, the MX400 features upgrades and improvements. There is always a benefit in buying a newer model, but you should examine the differences with the previous version to see if they are worth it.

Customer Ratings

Customer ratings are an essential consideration when buying machines like dirt bikes. It should not be the only consideration, however, as preferences differ between customers.

You will find less customer review online about the MX400 model, but customers seem to particularly like that the bike is easy to assemble and use.

The MX350 model has lots more reviews online, most of them are positive. Customers reported that even though the minimum age recommended by manufacturer is 13 years old, the bike is already too small for a 9 year old kid.


Price may or may not impact your decision when buying any of the models because they are in the same price range.

The MX400 costs a little more by virtue of being the newer model, and you need to decide if the upgrades on the bike are worth the extra dollars you will spend.


Each of the models is optimized for use by kids. They weigh 65 lbs so you are sure that children can handle the bike on the road. The models feature hand-operated brake system, an adjustable riser handlebar at the front, and a twist grip throttle.

The models are recommended for ages 13 and over, although users have complained of the bikes being too small for juniors in this age group. The 140lbs. limit is also confusing as it is not ideal for older riders.

Most online reviews conclude that the riders are younger, as young as five years even. The manuals suggest letting kids on the bikes on your discretion, that is only allow your little ones on the bikes if you are confident that they are adequately skilled.

Both versions have a stainless steel construction for their frames and plastic for the bodies. Plastic may not be the most durable, but these models will handle frequent use. They are fitted with 12ʺ knobby tires for dirt roads.

It is up to you to identify where your kids will ride the bikes since they are not ideal for public streets or trails. A good area would be a flat ground with such loose debris as gravel and rocks.

The models feature similar torque and a chain-driven electric motor that is sufficiently powerful. The bikes are single-speed, that is they deliver the same speed and acceleration regardless of how hard the throttle is twisted.

They can reach speeds of 14 mph, which is safe for kids. The bikes can run for around 30 minutes with a charging period of about 12 hours. The battery installed in the bikes is 24 Volts sealed acid battery.

The MX350 and MX400 are designed to be quiet so you can be sure that your kids will not disturb the neighbors when having fun.

Which One Should You Buy: MX350 or MX400?

All the features and the specifications of the MX350 are identical to the ones on the MX400. The major difference is color, which largely depends on preference. If you are keen on price, the MX350 is the cheaper model, albeit only slightly.

How to Choose a Dirt Bike for Your Child?

Dirt bike champions start at an early stage. If you intend to introduce your kids to the sport, you can start with toy-like bikes before upgrading them to bigger machines.

Electric dirt bikes gained popularity as alternatives to gas-powered models for kids. The early versions of the bikes had cumbersome SLA batteries which made the models heavy, in addition to having less-powerful engines.

Advancements have, however, made the bikes a force to be noted. brands are joining the electric dirt bike market, including Yamaha and some models can even perform better than some gas-powered bikes.

Razor is among the leading producer of electric dirt bikes, and their MX series is quite popular. The bikes are budget-friendly, safe, and relatively durable. Consider the following when buying an electric dirt bike for your junior:


Different electric dirt bikes are optimized for varying age groups. You will need to be keen on the recommended age for a particular model. Most manufacturers over-estimate the suggested age for their products. The MX350 is, for example, advocated for 13-year-olds, but in practice, the bike can be used by juniors between five and ten.

You need to gauge your kid’s maturity and skill-set to know if they would handle the model you intend to buy. Do a test run before buying the bike.

Battery Life and Charger

The battery life will also inform your purchasing decision. A model that does not preserve charge for long means that your kid will constantly have to stop or you will have to carry the bike if it loses power on the road.

Battery life informs riding efficiency as well as the money you will spend on charging it. Purchase a battery from the same brand as the bike if possible. Chargers will either be portable or plugin, and you can select one based on charging rate, quality, size, and brand. The versatility of the charger is an additional factor to look into.

Technical Specifications

You should also identify the size and weight of the bike, as small bikes are easy to handle for kids. Manufacturers also recommend a weight capacity for riders. A limit of 140 lbs. has, for example, been given for the MX350 and MX400.

The material of the bike is also noteworthy. The body of most bikes is mostly made of steel with a plastic body. The materials that make an electric dirt bike will impact on its durability.

The aesthetics also matters. Kids are excited by colorful toys, so keep it in mind when sourcing for a model.

When it comes to performance, determine the speed which the bike can reach. Moderate speeds are recommended for kids since they get the adrenaline rush while still being safe. The speed should ideally match your junior’s motor skills.

The model you buy should also be easy to assemble. Most manufacturers package their models semi-assembled so that you get it running in a few minutes.

Assembling the bike will also make you more knowledgeable on its systems so that you can troubleshoot in case there is an issue.


Electric bikes can feature an on/off switch or a hand-operated brake. The system needs to be responsive and easily accessible. Determine if the bike has variable speed settings or single-speed as in the case of the MX400 or the MX350.

Value for Money

Your kids will keep outgrowing their toys, and you do not want to overspend on a machine that they will stop using in a few years. In the case of the MX350, it is priced lower than the MX400 while still offering the same features. Examine the characteristics of different models and even various brands to get the most budget-friendly option.

Settle for an option that has a warranty in case your order malfunctions. Evaluate user reviews on online platforms to get unbiased information about the model you want to buy.


Dirt bikes have become safer, thanks to technological advancements. Getting your kid on an electric dirt bike that goes 14 mph and equipping them with safety gear will give you peace of mind as it gives them the thrill of the outdoors.

If you want to buy a Razor electric dirt bike for your kid, but can’t decide which model to choose (SX340, MX350 or MX400), I can tell you that they are pretty much the same.

There are slight differences in design and price. The MX400 is the most expensive, because it is the newer model.

These dirt bikes have really good quality, so it might be wort buying a used one. Though, if you can’t find a used Razor bike in your area, check out Amazon, because there you can find some really good deals too.

I’m a off-road enthusiast, extreme sport fan and the editor of MotoShark. If you have any questions or suggestions regarding this article, please leave a comment or contact me.

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About MotoShark

MotoShark is your one-stop resource to learn about dirt bikes, ATVs, UTVs, super-bikes and motorcycles in general. As a bike rider, off-road lover and extreme sport fan, I enjoy sharing my experience. Learn more about me here.


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