Description
The NGK CR9E (Stock #6263) is a standard nickel spark plug designed for high-performance motorcycles and powersports engines. Built with NGK’s OE-quality materials, it delivers reliable ignition, efficient heat dissipation, and consistent performance—making it a dependable choice for sport bikes and high-revving engines.
Key Features
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OEM-equivalent design for reliable fit and performance
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Nickel alloy center electrode for consistent spark
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Copper core construction (98%) improves heat transfer
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High-grade ceramic insulator for superior dielectric strength
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Triple gasket sealing prevents combustion leakage
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Trivalent plating resists corrosion and seizure
- Ideal for engines originally equipped with nickel plugs
Specifications
General
- Part Number: CR9E
- Stock Number: 6263
- Heat Range: 9 (colder plug for high-performance engines)
- Resistor: Yes (5k Ohm)
- Pre-Gap: 0.8 mm
Shell
- Thread Size: M10 x 1.0
- Reach: 19.0 mm
- Seat Type: Flat (gasket)
- Hex Size: 5/8" (16 mm)
- Terminal Type: Stud
Electrodes
- Center Electrode: Nickel (copper core)
- Ground Electrode: Nickel
- Configuration: J-gap
- Projection: Non-projected
Fitment Highlights
Commonly used in sport bikes and performance motorcycles, including:
Ducati
- 749 / 749S / 749R (2004–2006)
- 998 series (2003–2004)
- ST3 (2004–2007)
Kawasaki
- Ninja ZX-6R / ZX-6 / ZX-12R / ZX-11
- ZZR600 / ZZR1200
- Multiple ZX-series sport bikes (1990s–2024)
Suzuki
- GSX-R600 / GSX-R750 / GSX-R1000
- Hayabusa GSX1300R (1999–2007)
- RF600 / RF900
Yamaha
- YZF-R1 (1998–2001)
- FZ1 / FZ6R / FZ8
- WR250F / YZ250F
Aprilia
Performance Notes
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Heat range 9 = colder plug, suited for high-compression / high-RPM engines
- Best for sport bikes and aggressive riding conditions
- Shorter service life than platinum/iridium (typical for nickel plugs)
- Not recommended as a downgrade from OEM platinum/iridium plugs
