While uncommon, some items may ship from a separate warehouse

About the Clutch Cover

Features
Set your ride apart from the rest with the ultimate look in race performance
Lightweight factory clutch covers provide years of outstanding protection; guaranteed not to warp
Individually surfaced for a perfect, leak-free fit
Super-tough, powder-coated finish resists weathering and wear and tear
Asbestos-free gasket is bound with nitrile for tight, leak-free seal

Specs
Color/Finish Powder-Coated / Black
Model Factory Racing
Riding Style Off-Road
Units Each
Product Name Cover
Type Clutch

Package info
Weight 1 lbs
Height 2.55
Length 7.95
Width 7.91

About the Ignition Cover

Features
Look like a professional with the Factory Ignition Cover
Seals properly, guarding inside of engine from dirt and water and outlasts stock covers
Boyesen Factory Covers are cast from the highest grade of aluminum and are strong yet lightweight
Super-tough, powder-coated finish resists weathering and wear and tear
OEM paper gaskets can be reused, or use the supplied O-ring

Specs
Color/Finish Black / Powder-Coated
Type Ignition
Model Factory Racing
Material Aluminum
Product Name Cover
Riding Style Off-Road
Units Each

Package info
Weight 0.69 lbs
Height 2.51
Length 7.79
Width 7.79

About the 2003-2004 Kawasaki KX250

Here's a detailed overview of the 2003–2004 Kawasaki KX250:

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Overview and Historical Context:

The 2003–2004 Kawasaki KX250 represents an important era in Kawasaki's two-stroke motocross history, combining proven racing heritage with incremental refinements to engine performance, chassis handling, and suspension technology. These years were among the final iterations of the KX250 before four-stroke motorcycles dominated the motocross scene, making them especially valued among two-stroke enthusiasts.

During these model years, Kawasaki continued to refine the KX250’s power delivery and handling characteristics, maintaining its competitive presence against rivals such as Honda's CR250R, Yamaha’s YZ250, and Suzuki’s RM250.

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Engine and Performance:

• Engine Specifications:

  • 249 cc single-cylinder, liquid-cooled two-stroke engine
  • Reed-valve induction system with Kawasaki Integrated Power Valve System (KIPS) for improved powerband control
  • Carburetor: Mikuni TMX38 (standard)
  • Transmission: 5-speed close-ratio gearbox optimized for motocross racing

• Performance Traits:

  • Potent power with strong mid-range and aggressive top-end performance
  • Known for a sharp, responsive throttle feel, suited to experienced riders comfortable with aggressive power delivery
  • Kawasaki’s KIPS power valve system enhanced the usable powerband, smoothing transitions between low, mid, and high RPM

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Chassis, Suspension, and Handling:

• Frame and Chassis:

  • Lightweight steel perimeter frame providing balanced rigidity, predictable handling, and precise cornering ability
  • Excellent stability at high speed and responsive handling through tight corners and challenging track conditions
  • Ergonomically designed bodywork facilitating easy rider movement, control, and reduced fatigue

• Suspension Components:

  • KYB suspension, fully adjustable:
    • Front Forks: 48mm inverted cartridge forks, adjustable compression and rebound damping
    • Rear Shock: KYB shock absorber with Kawasaki’s Uni-Trak linkage suspension system, adjustable compression, rebound damping, and spring preload
  • Suspension widely praised for progressive action, bottoming resistance, and adjustability suited to varying rider weights and track conditions

• Braking System:

  • High-quality Nissin hydraulic disc brakes front and rear, providing reliable, consistent stopping power and precise braking modulation

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Model-Year Refinements:

2003 Kawasaki KX250:

• Improved cylinder porting and exhaust tuning for smoother mid-to-top power delivery
• Slight suspension tuning adjustments, enhancing ride comfort and control on rough tracks
• Revised ergonomics and seat design for improved rider positioning and comfort
• Minor carburetion adjustments to enhance throttle response

2004 Kawasaki KX250:

• Additional refinements to the engine’s cylinder head and power valve timing, further smoothing power delivery and improving throttle response
• Improved suspension valving in both forks and shock for better compliance over bumps and jumps
• Minor changes to chassis geometry improved cornering feel and rider confidence
• Improved reliability and durability from updated clutch components and transmission internals

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Riding Impression & Reputation:

The 2003–2004 Kawasaki KX250 was praised by riders for:

• Strong, aggressive power delivery favored by experienced riders and amateur racers
• Excellent handling balance, combining precise cornering with straight-line stability
• Suspension performance capable of handling aggressive riding styles and track conditions
• High-quality build and reliability, continuing Kawasaki’s strong reputation in the motocross community

These bikes remain popular among amateur racers, two-stroke motocross enthusiasts, and collectors.

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Collectibility and Market Popularity:

The 2003–2004 KX250 is highly desirable today due to:

• Being among the last generation of Kawasaki’s legendary two-stroke motocross bikes
• Continued popularity in amateur and vintage racing circuits
• Excellent aftermarket and OEM parts availability, making restoration and maintenance straightforward

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Common Maintenance and Issues:

• Top-End Maintenance:

  • Regular top-end rebuilds (piston and rings) recommended every 40–60 hours of use to maintain optimal performance and reliability

• Power Valve (KIPS) Maintenance:

  • Requires regular cleaning (every 20–30 riding hours) to prevent carbon buildup, maintain smooth operation, and optimize engine performance

• Suspension Maintenance:

  • Routine fork seal and fluid replacement recommended every 40–60 hours
  • Regular servicing of shock linkage, swingarm bearings, and steering head bearings critical for consistent handling

• Carburetion and Jetting:

  • Regular adjustments often required for peak performance, particularly with varying weather, elevation, or track conditions

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Summary:

The 2003–2004 Kawasaki KX250 remains celebrated for its aggressive engine performance, excellent handling, robust chassis design, and competitive motocross heritage. Valued by collectors, amateur racers, and two-stroke enthusiasts, this generation of KX250 continues to hold a special place in motocross history.