NGK Iridium IX Premium Spark Plug BR9EIX (Box of 4) — Fits 1973-2005 Honda, Kawasaki, Suzuki & More

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SKU: NGK3981

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About NGK

NGK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full NGK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

NGK Iridium IX BR9EIX Spark Plugs: Performance for Enthusiasts

Elevate your engine's performance with NGK Iridium IX BR9EIX spark plugs, engineered specifically for the demanding enthusiast. These premium spark plugs deliver outstanding acceleration, improved fuel efficiency, and exceptional durability, making them ideal for high-performance applications. The fine wire iridium center electrode, six times harder than platinum, ensures extreme ignitability and superior anti-fouling properties, even under aggressive riding conditions.

Key Features & Benefits:

  • Extreme Ignitability: Fine wire iridium electrode provides a consistent, powerful spark for optimal combustion.
  • Enhanced Acceleration: Experience quicker throttle response and improved engine pickup.
  • Superior Fuel Efficiency: More efficient combustion leads to better mileage.
  • Exceptional Durability: Iridium alloy's high melting point withstands extreme temperatures and extends plug life.
  • Anti-Fouling Design: Tapered cut ground electrode helps prevent carbon buildup, ensuring reliable starts and smooth idling.

These NGK Iridium IX BR9EIX spark plugs are a fantastic upgrade for a wide range of motorcycles and powersports vehicles, including the 1973-1975 Honda CR250M, 1974-1979 Kawasaki KX125/KX250, and various Suzuki RM series models. For ultimate performance, consider NGK Ruthenium HX. Get your Iridium IX plugs at GGCRACING.

…and 157 additional fitments. Contact us to confirm yours.

About NGK

NGK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full NGK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

NGK Iridium IX BR9EIX Spark Plugs: Performance for Enthusiasts

Elevate your engine's performance with NGK Iridium IX BR9EIX spark plugs, engineered specifically for the demanding enthusiast. These premium spark plugs deliver outstanding acceleration, improved fuel efficiency, and exceptional durability, making them ideal for high-performance applications. The fine wire iridium center electrode, six times harder than platinum, ensures extreme ignitability and superior anti-fouling properties, even under aggressive riding conditions.

Key Features & Benefits:

  • Extreme Ignitability: Fine wire iridium electrode provides a consistent, powerful spark for optimal combustion.
  • Enhanced Acceleration: Experience quicker throttle response and improved engine pickup.
  • Superior Fuel Efficiency: More efficient combustion leads to better mileage.
  • Exceptional Durability: Iridium alloy's high melting point withstands extreme temperatures and extends plug life.
  • Anti-Fouling Design: Tapered cut ground electrode helps prevent carbon buildup, ensuring reliable starts and smooth idling.

These NGK Iridium IX BR9EIX spark plugs are a fantastic upgrade for a wide range of motorcycles and powersports vehicles, including the 1973-1975 Honda CR250M, 1974-1979 Kawasaki KX125/KX250, and various Suzuki RM series models. For ultimate performance, consider NGK Ruthenium HX. Get your Iridium IX plugs at GGCRACING.

…and 157 additional fitments. Contact us to confirm yours.

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