The 2004 Honda TRX400EX is a sport ATV known for its performance and exhilarating riding experience. Produced from 2001 to 2008, this model is a single trim offering. It stands out for its potent engine, agile handling, and Honda's legendary reliability, making it a highly sought-after machine for recreational trail riding and off-road adventures. Used pricing typically ranges from $2,500 to $5,000 depending on condition and modifications.
The Good
The 2004 Honda TRX400EX excels with its powerful engine and responsive handling, offering pure riding fun. Honda's renowned reliability ensures peace of mind, while its durable build provides excellent long-term value, appealing to both thrill-seekers and budget-conscious owners.
The Bad
Potential buyers of the 2004 Honda TRX400EX should watch out for a stiff suspension that can be unforgiving on rough terrain. Some owners report an aging carburetor that may require tuning or replacement, and basic technology means a lack of modern conveniences.
2004 Honda TRX400EX: Quick Overview
- Engine: The 2004 Honda TRX400EX is equipped with a single engine option: a 397cc, air-cooled, four-stroke, single-cylinder engine. This powerplant features a 97mm bore and 80.6mm stroke, contributing to its robust performance.
- Horsepower: While Honda doesn't officially publish horsepower figures for the TRX400EX, estimates from reputable sources generally place its output around 30-35 horsepower. This is ample power for its class, offering a thrilling ride.
- Fuel Economy: Specific fuel economy figures for ATVs like the TRX400EX are not typically measured or published in the same way as cars. However, based on its engine size and typical usage, expect mileage to be in the range of 15-25 miles per gallon, highly dependent on riding style and terrain.
- 0-60 Times: Official 0-60 mph (or 0-96 km/h) acceleration times are not provided by Honda for this off-road vehicle. However, due to its powerful engine and lightweight construction, the TRX400EX is known for its quick acceleration, capable of reaching higher speeds rapidly, with estimates suggesting it can reach 60 mph in roughly 6-8 seconds from a standstill under optimal conditions.
- Towing Capacity: The Honda TRX400EX is designed as a sport ATV and does not come with a factory-installed towing hitch or a specified towing capacity. Its primary purpose is performance and maneuverability, not hauling heavy loads.
- Trim-Level Features: The 2004 Honda TRX400EX is offered in a single, well-equipped trim level. Key features include:
- Electric starter for easy ignition.
- Hydraulic disc brakes front and rear for reliable stopping power.
- Independent front suspension with adjustable shocks for customizable handling.
- Pro-Link rear suspension for smooth and controlled travel.
- Aggressive sport styling with a rugged plastic bodywork.
- High-performance exhaust system.
- Comfortable and secure seating for dynamic riding.
- Durable steel frame for longevity.
- Front and rear grab bars for easier handling and transport.
2004 Honda TRX400EX Specifications
Vehicle Information
| Year | 2004 |
| Make | Honda |
| Model | TRX400EX |
| Trim | - |
| Style | - |
| Type | Motorcycle |
| Category | Low Speed Vehicle |
Manufacturing Details
| Made In | United States |
| Manufacturing City | TIMMONSVILLE |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 395CC |
| Engine Size | 395L |
| Engine Cylinders | - |
| Transmission | - |
| Transmission Type | - |
| Transmission Speeds | - |
| Drivetrain | - |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 2004 Honda TRX400EX Have?
The 2004 Honda TRX400EX is generally regarded as a highly reliable machine, a hallmark of Honda engineering. However, like any vehicle, it has some commonly reported issues and points to consider for long-term ownership. One frequent concern, particularly as these ATVs age, relates to the carburetor. Owners may experience difficulty in starting, rough idling, or hesitation if the carburetor is not properly maintained, cleaned, or adjusted. This is often due to fuel residue buildup or worn-out jets and seals over time. While not a widespread recall issue for the 2004 model year, proper carburetor cleaning and rebuilding kits are common maintenance items.
Another area that some owners note is the stock suspension. While functional, it can feel quite stiff, especially on very rough or choppy terrain. For riders seeking a more comfortable or performance-oriented ride, upgrading to aftermarket suspension components is a common modification. This isn't a defect but rather an area where personalization is often desired.
Regarding electrical systems, the starter clutch has been mentioned by some owners as a potential failure point, though this is not a pervasive problem specific to the 2004 model year and can occur on any TRX400EX with significant mileage. Ensuring the battery is in good condition and connections are clean is crucial for the starting system's health.
Honda did not issue any major recalls specifically for the 2004 TRX400EX model related to safety defects. Its robust design and relatively simple mechanical systems contribute to its solid reputation. Long-term reliability is strongly tied to consistent maintenance. Regular oil changes, proper chain lubrication, air filter cleaning, and checking tire pressures are essential. With diligent care, the 2004 TRX400EX is known to provide many years of dependable service. The engine, transmission, and chassis are all built to last if treated with respect and maintained according to the owner's manual.
Another area that some owners note is the stock suspension. While functional, it can feel quite stiff, especially on very rough or choppy terrain. For riders seeking a more comfortable or performance-oriented ride, upgrading to aftermarket suspension components is a common modification. This isn't a defect but rather an area where personalization is often desired.
Regarding electrical systems, the starter clutch has been mentioned by some owners as a potential failure point, though this is not a pervasive problem specific to the 2004 model year and can occur on any TRX400EX with significant mileage. Ensuring the battery is in good condition and connections are clean is crucial for the starting system's health.
Honda did not issue any major recalls specifically for the 2004 TRX400EX model related to safety defects. Its robust design and relatively simple mechanical systems contribute to its solid reputation. Long-term reliability is strongly tied to consistent maintenance. Regular oil changes, proper chain lubrication, air filter cleaning, and checking tire pressures are essential. With diligent care, the 2004 TRX400EX is known to provide many years of dependable service. The engine, transmission, and chassis are all built to last if treated with respect and maintained according to the owner's manual.
How long will the 2004 Honda TRX400EX last?
The 2004 Honda TRX400EX, when properly maintained, can offer impressive longevity. Owners typically report getting 10-15 years or more of service from these machines, with usage varying greatly. Many are used for recreational riding, accumulating an average of 1,000 to 5,000 miles over their lifespan. However, some heavily used or raced units might see more significant wear. The core components like the engine and frame are exceptionally durable, often outlasting other parts if routine maintenance—oil changes, filter cleaning, chain lubrication—is diligently performed. Weaknesses over time tend to be related to wear items like bearings, seals, or carburetor components, which are expected with age and usage. With regular care, the TRX400EX demonstrates excellent long-term durability.
What Technology & Safety Features are Included?
The 2004 Honda TRX400EX represents a period where ATVs were primarily focused on raw performance and mechanical engagement rather than advanced technology. Consequently, it offers a very minimalist approach to built-in features. There is no integrated entertainment system, such as a radio or audio player, as its design prioritizes an unadulterated off-road experience.
Similarly, driver-assistance features are non-existent. This vehicle is designed for skilled operation and requires the rider's full attention and input. There are no electronic aids like traction control, stability control, or advanced braking systems beyond the standard hydraulic disc brakes. The focus is on direct rider control and feedback.
Safety features are also quite basic, emphasizing the need for rider skill and protective gear. The primary safety features are the robust hydraulic disc brakes on both the front and rear wheels, providing effective stopping power. The sturdy steel frame and the overall chassis design contribute to its stability, but there are no passive safety systems like airbags or seatbelts, as is typical for ATVs. The aggressive tire tread offers good grip on various terrains.
Optional features on the 2004 TRX400EX would have been limited to dealer-installed accessories or aftermarket modifications. These could include things like upgraded suspension components, different exhaust systems for increased power, handguards for protection, more aggressive tires, or cosmetic enhancements. Some owners might have added skid plates for undercarriage protection.
Crash-test ratings are not applicable to ATVs like the 2004 Honda TRX400EX, as they are not subjected to standardized crash testing in the same way as passenger vehicles. The safety of the rider is heavily dependent on their own skill, judgment, and the use of appropriate personal protective equipment (PPE), such as helmets, goggles, gloves, and protective riding gear.
Similarly, driver-assistance features are non-existent. This vehicle is designed for skilled operation and requires the rider's full attention and input. There are no electronic aids like traction control, stability control, or advanced braking systems beyond the standard hydraulic disc brakes. The focus is on direct rider control and feedback.
Safety features are also quite basic, emphasizing the need for rider skill and protective gear. The primary safety features are the robust hydraulic disc brakes on both the front and rear wheels, providing effective stopping power. The sturdy steel frame and the overall chassis design contribute to its stability, but there are no passive safety systems like airbags or seatbelts, as is typical for ATVs. The aggressive tire tread offers good grip on various terrains.
Optional features on the 2004 TRX400EX would have been limited to dealer-installed accessories or aftermarket modifications. These could include things like upgraded suspension components, different exhaust systems for increased power, handguards for protection, more aggressive tires, or cosmetic enhancements. Some owners might have added skid plates for undercarriage protection.
Crash-test ratings are not applicable to ATVs like the 2004 Honda TRX400EX, as they are not subjected to standardized crash testing in the same way as passenger vehicles. The safety of the rider is heavily dependent on their own skill, judgment, and the use of appropriate personal protective equipment (PPE), such as helmets, goggles, gloves, and protective riding gear.
What Colors Options are Available?
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In the meantime, feel free to explore the other sections for more content.
In the meantime, feel free to explore the other sections for more content.
2004 Honda TRX400EX Prices and Market Value
Owning a 2004 Honda TRX400EX can be quite economical. Insurance costs are typically lower than for a car, often around $100-$200 annually, depending on coverage and location. Fuel costs are moderate, averaging $10-$20 per outing depending on usage and gas prices. Routine maintenance, like oil changes and filter cleaning, is inexpensive and DIY-friendly. Repairs for common issues are generally affordable, with parts readily available. Overall, the TRX400EX is a cost-effective machine to own and operate for recreational purposes, especially compared to motorized vehicles.
2004 Honda TRX400EX Cost of Ownership
The 2004 Honda TRX400EX is generally considered economical to own. Insurance premiums are relatively low, often in the range of $100 to $250 per year depending on your provider and coverage. Fuel consumption, while not precisely rated, is reasonable for its class, typically costing between $10 and $30 for a day's ride. Routine maintenance is straightforward and affordable, with oil changes and air filter cleaning being key tasks. Repairs for common issues like carburetor adjustments or brake pad replacements are also budget-friendly. The overall cost of ownership is low, making it an attractive option for recreational riders.
2004 Honda TRX400EX Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
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City Mileage
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Highway Mileage
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2004 Honda TRX400EX Warranty
Basic
Original warranty
0 months / No data
Estimated remaining
Expired
Powertrain
Original warranty
0 months / No data
Estimated remaining
Expired
Rust
Original warranty
0 months / No data
Estimated remaining
Expired
2004 Honda TRX400EX Insurance
Insurance for a 2004 Honda TRX400EX is moderately priced, reflecting its status as a Motorcycle with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2004 Honda TRX400EX Compare to Other Motorcycle?
The 2004 Honda TRX400EX competed in a robust sport ATV market against formidable rivals such as the Yamaha YFZ450, Suzuki LT-R450 (Quadzilla), and Kawasaki KFX400. In terms of performance, the TRX400EX offered a strong, torquey engine that was responsive and predictable, making it excellent for trail riding and general sport use. However, its 397cc engine, while potent, generally couldn't match the sheer top-end power and acceleration of the liquid-cooled, higher-revving 450cc machines from Yamaha and Suzuki, which often featured more advanced engine designs like dual overhead cams. The Kawasaki KFX400 shared a similar engine platform with the Suzuki LT-Z400, offering comparable performance.
Features were a significant differentiator. While the TRX400EX boasted Honda's legendary reliability and a smooth power delivery, rivals like the YFZ450 introduced more advanced features for their time, such as liquid cooling and sometimes more sophisticated suspension setups or chassis designs aimed at racing. The TRX400EX was air-cooled and relied on a simpler, proven setup.
Reliability is where the TRX400EX truly shone. Honda's reputation for building durable, long-lasting machines is well-earned, and the TRX400EX is no exception. Its air-cooled engine and robust construction meant fewer potential points of failure compared to some of its liquid-cooled counterparts, which could be more prone to overheating if not meticulously maintained. The Yamaha and Suzuki 450s were also reliable but sometimes demanded more intensive maintenance due to their higher-strung nature.
Regarding price, the TRX400EX was typically positioned as a slightly more budget-friendly option compared to the cutting-edge 450cc sport quads upon their release, though used prices are now very competitive. The KFX400 and LT-Z400 often offered a similar price point and performance balance.
Recommendations:
Ultimately, the 2004 Honda TRX400EX remains a fantastic choice for recreational riders who prioritize reliability, ease of maintenance, and a fun, predictable ride over bleeding-edge performance.
Features were a significant differentiator. While the TRX400EX boasted Honda's legendary reliability and a smooth power delivery, rivals like the YFZ450 introduced more advanced features for their time, such as liquid cooling and sometimes more sophisticated suspension setups or chassis designs aimed at racing. The TRX400EX was air-cooled and relied on a simpler, proven setup.
Reliability is where the TRX400EX truly shone. Honda's reputation for building durable, long-lasting machines is well-earned, and the TRX400EX is no exception. Its air-cooled engine and robust construction meant fewer potential points of failure compared to some of its liquid-cooled counterparts, which could be more prone to overheating if not meticulously maintained. The Yamaha and Suzuki 450s were also reliable but sometimes demanded more intensive maintenance due to their higher-strung nature.
Regarding price, the TRX400EX was typically positioned as a slightly more budget-friendly option compared to the cutting-edge 450cc sport quads upon their release, though used prices are now very competitive. The KFX400 and LT-Z400 often offered a similar price point and performance balance.
Recommendations:
- Similar Alternatives: The Kawasaki KFX400 and Suzuki LT-Z400 are very similar in terms of their usability and target audience. They share a common engine architecture and offer a good blend of sport and trail capability.
- Performance-Oriented Alternatives: If outright racing performance is the goal, the Yamaha YFZ450 and Suzuki LT-R450 would be considered upgrades. They offer more power, liquid cooling, and often more aggressive styling and suspension for competitive riding, though they can be more demanding to maintain and might command higher used prices.
Ultimately, the 2004 Honda TRX400EX remains a fantastic choice for recreational riders who prioritize reliability, ease of maintenance, and a fun, predictable ride over bleeding-edge performance.
Final Verdict: Is the 2004 Honda TRX400EX a Good Motorcycle?
The 2004 Honda TRX400EX is ideal for recreational riders, intermediate off-road enthusiasts, and those who prioritize reliability and ease of maintenance over cutting-edge performance. It offers an exhilarating ride without the complexity or demanding upkeep of some high-performance sport quads. It is absolutely worth buying, especially on the used market, as these machines hold their value well due to their legendary durability. The single trim level is well-equipped for its purpose. Buying used is the only option now, and condition is paramount. Look for well-maintained examples with minimal modifications for the best long-term ownership experience. It's a fantastic value for dependable fun.
Cathleen V
Cathleen is an exceptional freelance writer covering hot topics in the automotive world from a gearhead's perspective. Her articles delve into various aspects of automotive technology and history, offering readers detailed insights into engine performance, reliability, and maintenance. Through her engaging and informative writing, Cathleen provides valuable information to automotive enthusiasts and consumers alike, helping them make informed decisions about vehicle maintenance and purchases.