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 2005-2007 Kawasaki KX250

Here's an in-depth overview of the 2005–2007 Kawasaki KX250:

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Overview and Historical Context:

The 2005–2007 Kawasaki KX250 represents the final chapter of Kawasaki's legendary two-stroke motocross era. These models were the last two-stroke 250cc motocross bikes produced by Kawasaki before the industry fully transitioned to four-strokes. With significant upgrades—including the introduction of the aluminum frame and enhanced suspension—this generation is highly prized by collectors, racers, and enthusiasts alike.

Renowned for its powerful engine, advanced chassis, and agile handling, the KX250 during these years was considered a fierce competitor against other contemporary two-stroke rivals like Yamaha’s YZ250, Honda’s CR250R, 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 with Kawasaki Integrated Power Valve System (KIPS)
  • Carburetor: Mikuni TMX38 carburetor
  • Transmission: 5-speed close-ratio gearbox designed for motocross racing

• Performance Traits:

  • Aggressive and explosive powerband, particularly strong in mid-to-top-end RPM range
  • Responsive throttle feel ideal for experienced riders and competitive motocross racers
  • KIPS power valve provided smoother transitions between RPM ranges, making power delivery manageable yet exhilarating

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Chassis, Suspension, and Handling:

• Frame and Chassis (Aluminum Frame Introduced in 2005):

  • Major chassis upgrade in 2005 with Kawasaki’s new aluminum perimeter frame replacing the steel perimeter frame
  • Improved rigidity and reduced weight enhanced handling precision, agility, and overall rider confidence
  • Ergonomically designed bodywork improved rider comfort, ease of movement, and control

• Suspension Components:

  • Premium Kayaba (KYB) suspension, fully adjustable:
    • Front Forks: KYB 48mm inverted cartridge forks (fully adjustable compression and rebound damping)
    • Rear Shock: KYB shock absorber paired with Kawasaki’s Uni-Trak linkage system (adjustable preload, compression, rebound damping)
  • Suspension settings praised for plush initial travel, progressive damping, excellent bottoming resistance, and good adjustability

• Braking System:

  • High-quality Nissin hydraulic disc brakes front and rear, providing consistent, powerful braking performance with excellent modulation

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Model-Year Refinements:

2005 Kawasaki KX250:

• Introduction of the new aluminum perimeter frame (a significant upgrade in handling and weight reduction)
• Revised engine porting, improved cylinder head design, and adjusted power valve timing for better mid-range and top-end power
• Improved suspension valving and setup, enhancing handling and ride comfort

2006 Kawasaki KX250:

• Additional refinements to suspension settings for better bump absorption and improved cornering performance
• Minor engine tuning adjustments provided smoother throttle response and enhanced reliability
• Ergonomic improvements made the bike easier and more comfortable to ride aggressively

2007 Kawasaki KX250 (Final Production Year):

• Final model year with minor improvements focused primarily on suspension refinement and subtle engine reliability upgrades
• Last two-stroke 250cc motocross model produced by Kawasaki, making it highly collectible and sought-after today
• Limited graphics update and refinements for reliability to close out production

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Riding Impression & Reputation:

Riders consistently praised the 2005–2007 Kawasaki KX250 for:

• Powerful, aggressive two-stroke engine, offering thrilling performance suited for competitive racing and advanced riding skills
• Excellent handling and precise cornering, greatly improved with the aluminum frame introduced in 2005
• Plush yet highly adjustable suspension capable of handling demanding motocross tracks
• Robust reliability, durability, and excellent build quality consistent with Kawasaki’s high-performance motocross heritage

These final two-stroke KX250 models are especially popular among collectors and two-stroke enthusiasts for their historical significance, performance capability, and distinctive riding experience.

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Collectibility and Market Popularity:

The 2005–2007 Kawasaki KX250 is highly sought-after today due to:

• Being Kawasaki’s final production run of 250cc two-stroke motocross bikes
• Aluminum frame introduction in 2005 significantly enhancing collectibility and performance desirability
• Continued popularity and competitive use in vintage and amateur motocross racing circuits
• Strong aftermarket and OEM support for parts availability, restoration, and performance upgrades

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Common Maintenance and Issues:

• Top-End Maintenance:

  • Regular piston and ring replacements recommended every 40–60 riding hours to maintain peak performance and reliability

• Power Valve (KIPS) Maintenance:

  • Periodic cleaning required (every 20–30 hours) to prevent carbon buildup, ensure smooth operation, and optimal power delivery

• Suspension and Chassis Maintenance:

  • Fork seal replacements and suspension oil changes every 40–60 hours recommended
  • Regular servicing of linkage bearings, swingarm bearings, and steering head bearings crucial for maintaining optimal handling characteristics

• Carburetion and Jetting:

  • Regular tuning adjustments recommended based on varying track conditions, elevation, and weather for optimal performance

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Summary:

The 2005–2007 Kawasaki KX250 is an iconic motocross motorcycle that marks the end of an era for Kawasaki’s legendary two-stroke lineup. With its powerful engine, aluminum chassis, advanced suspension, and fierce motocross credentials, it remains highly desirable for enthusiasts, collectors, amateur racers, and two-stroke fans alike.