The 2004 Kawasaki KFX400 is a sport ATV that emerged during a golden era for this segment. Based on the highly regarded Suzuki LT-Z400, it shared a similar chassis and engine. As a sport quad, its body style is low-slung and aggressive. The KFX400 was produced from 2003 to 2006. Key trims are generally limited to the base model, sometimes with special graphics packages. New pricing was in the $6,000-$7,000 range. Its popularity stems from its excellent balance of performance, handling, and affordability, making it a go-to for recreational riders and those entering competitive racing.
The Good
The 2004 KFX400 offers a thrilling, responsive engine for exciting rides, coupled with a stable and predictable chassis for confidence-inspiring handling. Its robust build provides peace of mind regarding reliability, while its accessible price point offers exceptional value for spirited recreation.
The Bad
Potential weaknesses for the 2004 KFX400 include the stock carburetor's tendency to bog in certain conditions and the suspension's moderate travel, which might be insufficient for aggressive terrain. Some owners report wear on the cam chain tensioner over time.
2004 Kawasaki KFX400: Quick Overview
- Engine Options: Single-cylinder, liquid-cooled, four-stroke engine.
- Displacement: 398cc
- Bore x Stroke: 90.0 x 77.0 mm
- Compression Ratio: 11.3:1
- Valvetrain: DOHC, 4 valves
- Fuel System: Mikuni BSR36 carburetor
- Horsepower: Approximately 37-40 hp (estimated, varies with exhaust and tuning)
- Torque: Approximately 27-29 lb-ft (estimated)
- Fuel Economy: Typically in the range of 20-30 MPG, highly dependent on riding style and terrain. Specific MPG figures are not officially published for ATVs.
- 0-60 Times: Not officially published for ATVs, but generally estimated to be in the 5-6 second range for stock models.
- Top Speed: Around 65-70 mph (stock, dependent on rider weight and terrain).
- Towing Capacity: Not applicable. ATVs are not designed for towing.
- Transmission: 5-speed manual with reverse.
- Clutch: Wet multi-plate.
- Drivetrain: 2WD (Rear wheel drive).
- Final Drive: O-ring sealed chain.
- Front Suspension: Independent double A-arm with adjustable preload, rebound, and compression damping. Travel around 8.7 inches.
- Rear Suspension: Swingarm with adjustable preload, rebound, and compression damping. Travel around 9.1 inches.
- Brakes: Front: Dual hydraulic disc; Rear: Single hydraulic disc.
- Tires: Front: AT21x7R-10; Rear: AT20x10R-9.
- Dimensions: Length: 70.7 inches, Width: 43.7 inches, Height: 45.1 inches.
- Wheelbase: 49.2 inches.
- Ground Clearance: 10.0 inches.
- Dry Weight: Approximately 392 lbs.
- Fuel Capacity: 3.2 gallons.
- Trim-Level Features: The 2004 KFX400 was primarily offered as a single trim. Standard features include a robust steel frame, aggressive sport styling, powerful halogen headlights, a comfortable seat designed for aggressive riding, handguards for protection, and a digital multi-function display. Many models came with graphics packages.
2004 Kawasaki KFX400 Specifications
Vehicle Information
| Year | 2004 |
| Make | Kawasaki |
| Model | KFX400 |
| Trim | - |
| Style | - |
| Type | Motorcycle Terrain Cycle Recreational Vehicle |
| Category | Motorcycle |
Manufacturing Details
| Made In | Japan |
| Manufacturing City | TOYOKAWA |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 400cc 0cyl |
| Engine Size | 400L |
| 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 Kawasaki KFX400 Have?
The 2004 Kawasaki KFX400, being a derivative of the Suzuki LT-Z400, shares many of its common issues. One frequently reported concern is the stock carburetor, a Mikuni BSR36, which can sometimes be finicky and prone to bogging, especially at lower RPMs or when dealing with altitude changes. While not a major reliability failure, it often leads owners to consider aftermarket carburetor kits or re-jetting for improved performance.
Another area where owners sometimes report issues over time is the cam chain tensioner. This component can occasionally wear out, leading to a rattling noise from the engine, particularly on startup. While not a catastrophic failure, it's a maintenance item that needs attention to prevent potential engine damage. Replacement is generally straightforward, but timely diagnosis is key.
The stock clutch can also show signs of wear with aggressive riding or heavy use, leading to slippage. This is more of an issue related to riding style and maintenance rather than a inherent design flaw, but it's worth noting for potential buyers inspecting a used unit.
Regarding recalls, specific recalls for the 2004 KFX400 model year are not widely documented in public databases. However, it is always advisable to check with Kawasaki for any outstanding safety recalls that might apply to your specific VIN. Generally, the KFX400 platform is considered quite reliable, with most issues stemming from normal wear and tear or modifications made by previous owners. The engine and drivetrain are robust when properly maintained. Long-term reliability heavily depends on consistent maintenance, such as regular oil changes, air filter cleaning, and proper chain lubrication. The chassis and suspension components are also generally durable, though aftermarket upgrades are common to enhance performance for more demanding riding conditions.
Another area where owners sometimes report issues over time is the cam chain tensioner. This component can occasionally wear out, leading to a rattling noise from the engine, particularly on startup. While not a catastrophic failure, it's a maintenance item that needs attention to prevent potential engine damage. Replacement is generally straightforward, but timely diagnosis is key.
The stock clutch can also show signs of wear with aggressive riding or heavy use, leading to slippage. This is more of an issue related to riding style and maintenance rather than a inherent design flaw, but it's worth noting for potential buyers inspecting a used unit.
Regarding recalls, specific recalls for the 2004 KFX400 model year are not widely documented in public databases. However, it is always advisable to check with Kawasaki for any outstanding safety recalls that might apply to your specific VIN. Generally, the KFX400 platform is considered quite reliable, with most issues stemming from normal wear and tear or modifications made by previous owners. The engine and drivetrain are robust when properly maintained. Long-term reliability heavily depends on consistent maintenance, such as regular oil changes, air filter cleaning, and proper chain lubrication. The chassis and suspension components are also generally durable, though aftermarket upgrades are common to enhance performance for more demanding riding conditions.
How long will the 2004 Kawasaki KFX400 last?
Estimating average mileage for ATVs like the 2004 Kawasaki KFX400 is challenging as they are not typically tracked like cars. However, based on owner discussions and typical usage, many KFX400s that have been well-maintained can see service lives of 10 to 15 years or more, accumulating anywhere from 5,000 to 15,000 miles or even higher if primarily used for trail riding. Long-term durability is a strong suit of the KFX400 platform, thanks to its robust engine and chassis design. The primary weaknesses that emerge over time, as mentioned, are related to wear items like the cam chain tensioner and clutch components, which are expected in any performance-oriented vehicle. The carburetor can also require periodic tuning or cleaning. With consistent maintenance, including regular oil changes, chain adjustments, and suspension checks, the KFX400 can remain a reliable machine for many years of enjoyment.
What Technology & Safety Features are Included?
The 2004 Kawasaki KFX400 is a performance-oriented sport ATV, and as such, its focus is on raw capability rather than advanced technology, entertainment, or driver-assistance features typically found in automotive vehicles. It does not include infotainment systems, GPS, or Bluetooth connectivity. The 'tech' is primarily mechanical and functional.
Built-in Tech: The KFX400 features a digital multi-function display that provides essential information such as speed, an odometer, trip meter, and neutral indicator. It also incorporates a robust liquid-cooling system to maintain optimal engine operating temperatures during strenuous use. The lighting system consists of dual halogen headlights for visibility during dusk or dawn rides.
Entertainment: There are no built-in entertainment features. The 'entertainment' is derived from the riding experience itself – the sound of the engine, the thrill of acceleration, and the connection with the terrain.
Driver-Assistance Features: This ATV does not have any driver-assistance features. It relies entirely on the rider's skill and judgment for operation. Features like ABS, traction control, or electronic stability control are absent, as is common for sport ATVs of this era.
Safety Features: Safety features are primarily passive and structural. The ATV is equipped with a strong steel frame designed to withstand the rigors of off-road riding. It has front and rear hydraulic disc brakes for effective stopping power. Handguards are standard to offer some protection to the rider's hands from debris and impacts. The overall design prioritizes a stable riding platform and responsive handling to aid in safe operation.
Optional Features: While Kawasaki offered the KFX400 in a base trim, many optional accessories were available from both Kawasaki and aftermarket manufacturers. These could include upgraded exhaust systems for more power, performance-tuned carburetors, aftermarket suspension components for enhanced adjustability and travel, different tire sets for various terrains, protective skid plates, bumpers, and cosmetic enhancements.
Crash-Test Ratings: ATVs, including the 2004 KFX400, do not undergo crash-test ratings in the same way as passenger vehicles. Safety standards and testing for ATVs are governed by different organizations, such as the American National Standards Institute (ANSI) and the Specialty Vehicle Institute of America (SVIA). Kawasaki adheres to these industry standards for ATV manufacturing.
Built-in Tech: The KFX400 features a digital multi-function display that provides essential information such as speed, an odometer, trip meter, and neutral indicator. It also incorporates a robust liquid-cooling system to maintain optimal engine operating temperatures during strenuous use. The lighting system consists of dual halogen headlights for visibility during dusk or dawn rides.
Entertainment: There are no built-in entertainment features. The 'entertainment' is derived from the riding experience itself – the sound of the engine, the thrill of acceleration, and the connection with the terrain.
Driver-Assistance Features: This ATV does not have any driver-assistance features. It relies entirely on the rider's skill and judgment for operation. Features like ABS, traction control, or electronic stability control are absent, as is common for sport ATVs of this era.
Safety Features: Safety features are primarily passive and structural. The ATV is equipped with a strong steel frame designed to withstand the rigors of off-road riding. It has front and rear hydraulic disc brakes for effective stopping power. Handguards are standard to offer some protection to the rider's hands from debris and impacts. The overall design prioritizes a stable riding platform and responsive handling to aid in safe operation.
Optional Features: While Kawasaki offered the KFX400 in a base trim, many optional accessories were available from both Kawasaki and aftermarket manufacturers. These could include upgraded exhaust systems for more power, performance-tuned carburetors, aftermarket suspension components for enhanced adjustability and travel, different tire sets for various terrains, protective skid plates, bumpers, and cosmetic enhancements.
Crash-Test Ratings: ATVs, including the 2004 KFX400, do not undergo crash-test ratings in the same way as passenger vehicles. Safety standards and testing for ATVs are governed by different organizations, such as the American National Standards Institute (ANSI) and the Specialty Vehicle Institute of America (SVIA). Kawasaki adheres to these industry standards for ATV manufacturing.
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 Kawasaki KFX400 Prices and Market Value
When new, the 2004 Kawasaki KFX400 typically retailed in the range of $6,000 to $7,000 USD. As a sport ATV from that era, it has experienced depreciation, as is common for all vehicles. However, the KFX400, due to its popularity and shared platform with the highly sought-after Suzuki LT-Z400, tends to hold its value relatively well compared to some other ATVs of its vintage.
Currently, used market prices for a 2004 Kawasaki KFX400 can vary significantly. Expect to see prices ranging from approximately $2,000 to $4,500 USD, depending heavily on the condition, mileage/hours of use, any aftermarket modifications, and overall maintenance history. Well-maintained, stock or tastefully modified examples in excellent condition will command higher prices. Conversely, those with extensive wear, significant damage, or requiring substantial repairs will be at the lower end of the spectrum. Factors affecting resale value include the presence of original parts, the quality of aftermarket upgrades, and whether the ATV has been raced or used for aggressive trail riding versus recreational use.
Currently, used market prices for a 2004 Kawasaki KFX400 can vary significantly. Expect to see prices ranging from approximately $2,000 to $4,500 USD, depending heavily on the condition, mileage/hours of use, any aftermarket modifications, and overall maintenance history. Well-maintained, stock or tastefully modified examples in excellent condition will command higher prices. Conversely, those with extensive wear, significant damage, or requiring substantial repairs will be at the lower end of the spectrum. Factors affecting resale value include the presence of original parts, the quality of aftermarket upgrades, and whether the ATV has been raced or used for aggressive trail riding versus recreational use.
2004 Kawasaki KFX400 Cost of Ownership
Owning a 2004 Kawasaki KFX400 can be considered moderately economical compared to high-performance vehicles. Insurance costs will vary by location, rider age, and coverage, but are generally reasonable for an ATV. Fuel economy is decent for its class, likely in the 20-30 MPG range, making fuel costs manageable for recreational use. Maintenance is crucial; expect regular costs for oil changes, chain lubrication, filter cleaning, and tire checks. Repairs can be reasonable if sticking to stock parts, but performance modifications can increase costs. Overall, the KFX400 is relatively economical to own, especially when prioritizing routine maintenance, but high-performance modifications or extensive repairs can lead to higher expenditures. Its durability often offsets some of these costs.
2004 Kawasaki KFX400 Fuel Efficiency
Fuel Type
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Fuel Capacity
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City Mileage
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Highway Mileage
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2004 Kawasaki KFX400 Insurance
Insurance for a 2004 Kawasaki KFX400 is moderately priced, reflecting its status as a Motorcycle Terrain Cycle Recreational Vehicle with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2004 Kawasaki KFX400 Compare to Other Motorcycle Terrain Cycle Recreational Vehicle?
The 2004 Kawasaki KFX400 entered a highly competitive sport ATV market. Its primary rivals included the Yamaha YFZ450, Honda TRX450R, and its close sibling, the Suzuki LT-Z400 (which the KFX400 was based on).
Performance: In terms of performance, the KFX400 offered a potent 398cc engine that provided a strong balance of low-end torque and top-end power, making it versatile for various riding styles. The Yamaha YFZ450, with its lighter aluminum frame and larger 450cc engine, often held a slight edge in outright power and agility, particularly in motocross scenarios. The Honda TRX450R was also known for its excellent power delivery and responsive handling. The KFX400, sharing its powerplant with the LT-Z400, delivered very comparable performance, often excelling in its smooth powerband and manageable acceleration, appealing to a broader range of riders than the more aggressive YFZ or TRX.
Features: Feature-wise, these sport ATVs were relatively basic. The KFX400 came with a capable suspension system offering adjustability, hydraulic disc brakes, and a digital display. The YFZ450 was notable for its lightweight aluminum frame. The TRX450R was lauded for its refined ergonomics and reliable Honda engineering. In this regard, the KFX400 was largely on par with its main competitors, offering a well-rounded package without significant standout features over the others, but certainly not lagging behind.
Reliability: All these models generally have good reliability if properly maintained. The KFX400, sharing its engine with the LT-Z400, benefits from a proven and robust powertrain. The Honda TRX450R is legendary for its bulletproof reliability. The Yamaha YFZ450 is also a durable machine. Common issues like cam chain tensioner wear can be found across these platforms, but overall, they are considered dependable.
Price: The 2004 KFX400 was positioned competitively, often slightly undercutting some of its rivals when new. In the used market, it generally falls into a similar price bracket as the LT-Z400 and slightly below the YFZ450 and TRX450R, making it an excellent value proposition.
Alternatives:
* Similar: The 2004 Suzuki LT-Z400 is virtually identical and often a better choice if found at a comparable price due to its direct lineage and widespread aftermarket support.
* Better (Performance): If outright performance and a lighter package are paramount, the 2004 Yamaha YFZ450 or the 2004 Honda TRX450R might be considered superior, though often at a higher used price.
* More Budget-Friendly: For riders on a tighter budget seeking a capable sport quad, older models from manufacturers like Polaris (Predator 500) or Cannondale (Baja) might be options, though often with less refined handling or reliability concerns.
Performance: In terms of performance, the KFX400 offered a potent 398cc engine that provided a strong balance of low-end torque and top-end power, making it versatile for various riding styles. The Yamaha YFZ450, with its lighter aluminum frame and larger 450cc engine, often held a slight edge in outright power and agility, particularly in motocross scenarios. The Honda TRX450R was also known for its excellent power delivery and responsive handling. The KFX400, sharing its powerplant with the LT-Z400, delivered very comparable performance, often excelling in its smooth powerband and manageable acceleration, appealing to a broader range of riders than the more aggressive YFZ or TRX.
Features: Feature-wise, these sport ATVs were relatively basic. The KFX400 came with a capable suspension system offering adjustability, hydraulic disc brakes, and a digital display. The YFZ450 was notable for its lightweight aluminum frame. The TRX450R was lauded for its refined ergonomics and reliable Honda engineering. In this regard, the KFX400 was largely on par with its main competitors, offering a well-rounded package without significant standout features over the others, but certainly not lagging behind.
Reliability: All these models generally have good reliability if properly maintained. The KFX400, sharing its engine with the LT-Z400, benefits from a proven and robust powertrain. The Honda TRX450R is legendary for its bulletproof reliability. The Yamaha YFZ450 is also a durable machine. Common issues like cam chain tensioner wear can be found across these platforms, but overall, they are considered dependable.
Price: The 2004 KFX400 was positioned competitively, often slightly undercutting some of its rivals when new. In the used market, it generally falls into a similar price bracket as the LT-Z400 and slightly below the YFZ450 and TRX450R, making it an excellent value proposition.
Alternatives:
* Similar: The 2004 Suzuki LT-Z400 is virtually identical and often a better choice if found at a comparable price due to its direct lineage and widespread aftermarket support.
* Better (Performance): If outright performance and a lighter package are paramount, the 2004 Yamaha YFZ450 or the 2004 Honda TRX450R might be considered superior, though often at a higher used price.
* More Budget-Friendly: For riders on a tighter budget seeking a capable sport quad, older models from manufacturers like Polaris (Predator 500) or Cannondale (Baja) might be options, though often with less refined handling or reliability concerns.
Final Verdict: Is the 2004 Kawasaki KFX400 a Good Motorcycle Terrain Cycle Recreational Vehicle?
The 2004 Kawasaki KFX400 is an ideal choice for recreational riders, beginner to intermediate sport ATV enthusiasts, and those looking for a capable and fun machine without breaking the bank. Its balanced performance, forgiving handling, and robust build make it suitable for trail riding, general off-roading, and even entry-level racing or cross-country events.
It is definitely worth buying, especially on the used market, given its excellent value proposition. As it is no longer produced new, buying used is the only option. The base trim is the standard offering and perfectly adequate. Look for well-maintained examples, ideally with minimal aftermarket modifications that haven't been abused. Thoroughly inspect for signs of excessive wear, especially on the engine, suspension, and drivetrain. A KFX400 that has been regularly serviced and ridden responsibly will provide many years of enjoyment and represent a smart investment for spirited off-road adventures.
It is definitely worth buying, especially on the used market, given its excellent value proposition. As it is no longer produced new, buying used is the only option. The base trim is the standard offering and perfectly adequate. Look for well-maintained examples, ideally with minimal aftermarket modifications that haven't been abused. Thoroughly inspect for signs of excessive wear, especially on the engine, suspension, and drivetrain. A KFX400 that has been regularly serviced and ridden responsibly will provide many years of enjoyment and represent a smart investment for spirited off-road adventures.
Drew B
Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma