Exploring the Honda 400 ATV

In the realm of all-terrain vehicles (ATVs), few names resonate as strongly as the Honda 400 ATV. Since its inception in 1999 until the end of its production run in 2009, this iconic ATV has captured the hearts and minds of enthusiasts worldwide.

With its blend of power, reliability, and versatility, the Honda 400EX has cemented its status as a legend in the ATV community.

Power and Performance

At the heart of the Honda 400EX lies a high-performance 397cc four-stroke single-cylinder engine. Boasting 28 horsepower, this powerhouse is capable of propelling the 400EX to a top speed of 72 miles per hour.

The engine features a radial four-valve combustion chamber (RFVC), meticulously engineered to deliver optimal torque and horsepower across the rev range.

Whether navigating challenging trails or tearing up the track, the Honda 400EX offers an exhilarating ride that never fails to impress.

Built to Last

One of the hallmarks of the Honda 400EX is its exceptional durability. Constructed on a sturdy steel frame with a removable sub-frame, this ATV is built to withstand the rigors of off-road adventures.

The cast aluminum swing-arms further enhance stability and durability, ensuring a smooth and controlled ride in any terrain.

Triple disc brakes provide reliable stopping power, giving riders the confidence to tackle even the most demanding trails with ease.


Motor SortSingle-Chamber
Motor Stroke4-Stroke
Valves Per Chamber4
Valve ArrangementSOHC
Exhaust (mm/in)85/3.35
Stroke (mm/in)70/2.76
Displacement (cc/ci)397/24.2
Fuel RequirementsNormal
Fuel TypeGas
Fuel InjectorNo
Number Of Carburetors1
Carburetor Size (mm)38
Carburetion TypeCarburetor
Intake Air AdmissionStandard


Model SortTRX™ 400EX
SellersHonda Sellers
ProtectionConventional Sort (Essential)
Producer CountryJapan
Producer Suggest Least Age16
Parent OrganizationHonda
Show NameTRX™ 400EX


Transmission TypeManual
Number Of Velocities5
Essential DriveChain

Unrivaled Specifications

The Honda 400EX boasts a comprehensive list of specifications that highlight its performance-oriented design.

With a five-speed transmission featuring reverse gear, riders can effortlessly navigate through varying terrain with precision and control.

The independent double-wishbone front suspension, coupled with a Pro-Link fully-adjustable rear shock, delivers a plush yet responsive ride, capable of tackling bumps and obstacles with ease.

Customization and Aftermarket Support

Customization and Aftermarket Support

One of the key reasons behind the enduring popularity of the Honda 400EX is its extensive aftermarket support.

From performance upgrades to cosmetic enhancements, enthusiasts have a plethora of options to customize their 400EX according to their preferences.

Whether it’s upgrading suspension components, installing aftermarket exhaust systems, or adding stylish graphics kits, the possibilities for personalization are endless.

Legacy and Collectibility

Despite the end of its production in 2009, the Honda 400EX continues to hold a special place in the hearts of ATV enthusiasts.

Its reputation as a reliable, high-performance machine has made it a sought-after collectible in the ATV community.

While newer models may offer more power and advanced features, the timeless appeal of the Honda 400EX remains unmatched.


In conclusion, the Honda 400EX stands as a testament to Honda’s commitment to excellence in the ATV industry.

With its blend of power, performance, and durability, it has earned its place as one of the most iconic ATVs of all time.

Whether you’re a seasoned rider seeking thrills or a beginner looking for a reliable off-road companion, the Honda 400EX delivers an experience like no other.

As the ATV landscape continues to evolve, one thing remains certain: the legend of the Honda 400EX will endure for generations to come.


What is the Honda 400 ATV?

The Honda 400EX is an ATV manufactured by Honda Motors Company from 1999 to 2009, known for its power, reliability, and versatility.

Key specifications of the Honda 400EX?

It features a 397cc four-stroke single-cylinder engine, delivering 28 horsepower and a top speed of 72 mph, with a five-speed transmission and reverse gear.

What makes the Honda 400EX popular?

Its exceptional durability, ease of maintenance, and aftermarket support contribute to its popularity among enthusiasts.

Is the Honda 400EX still available?

It was discontinued in 2009, but used models can be found through various channels like online classifieds and ATV dealerships.

Common upgrades for the Honda 400EX?

Aftermarket exhaust systems, suspension components, and cosmetic accessories are popular upgrades for enhancing performance and aesthetics.

What maintenance does the Honda 400EX require?

Regular oil changes, air filter cleaning or replacement, brake inspections, and periodic checks of suspension components and drive chain tension are necessary for maintenance.

Is the Honda 400EX suitable for beginners?

Yes, its manageable power delivery, user-friendly clutch, and predictable handling make it a recommended choice for beginner riders, with proper safety gear and training.

What is the top speed of a 400cc ATV?

The top speed of a 400cc ATV varies but typically ranges between 65 to 75 miles per hour.

How many cc is a Honda 400 ATV?

The Honda 400, specifically the Honda TRX 400EX, has a 397cc four-stroke single-cylinder engine.

How much is the Honda Foreman 400 4×4?

The price of a new Honda Foreman 400 4×4 can range from approximately $6,000 to $8,000 USD.

Does Honda make a 4×4 ATV?

Yes, Honda manufactures several models of 4×4 ATVs, including the Honda Foreman series, Honda Rancher series, and Honda Rubicon series.

Exploring the Honda 400 ATV

Who Makes Argo ATV: All-Terrain Pioneers

Leave a comment

Your email address will not be published. Required fields are marked *