NGK 7556 Iridium Spark Plug for Select Honda Motorcycle Applications

Vehicle Fitment

• Honda CB1000R (2008-2016, 2018-2019)
• Honda CB650R (2019-2020)
• Honda CB650R ABS (2019-2020)
• Honda CBR1000RR (2008-2019)
• Honda CBR1000RR ABS (2019)
• Honda CBR1000RR SP (2019)
• Honda CBR600RR (2009-2012)
• Honda VFR1200F (2010, 2012-2013)
• Honda VFR1200F DCT (2010, 2012-2013)

Features

• Laser-welded iridium center electrode for excellent durability
• Platinum ground electrode for even wear and long service life
• High ignitability design for improved combustion and throttle response
• Copper core for superior heat dissipation and conductivity
• Resistor type spark plug reduces electrical noise interference
• Corrosion-resistant ceramic insulator
• Factory preset gap for optimal performance
• OE quality and performance with extended service intervals

Specifications

• Part Number: 7556 (NGK Laser Iridium)
• Alternate Number: IMR9E-9HES
• Thread Size: M10 x 1.0
• Reach/Thread Length: 19 mm
• Heat Range: 9 (high performance, thermal range optimized for sport bikes)
• Seat Type: Flat
• Resistor: Yes (~5 kΩ)
• Hex Size: 16 mm (5/8")

Included Components

• 1x NGK 7556 iridium spark plug

Product Description

The **NGK 7556 Iridium Spark Plug** (also sold as NGK IMR9E-9HES) delivers premium ignition performance for a range of Honda motorcycle models. Featuring a laser-welded iridium center electrode and platinum ground electrode, this spark plug is engineered to provide superior durability, reliable starts, smoother idle, and optimized throttle response across high-performance applications. Its resistor design helps reduce electrical interference while the copper core ensures efficient heat dissipation during extended operation. 

Designed to meet or exceed OEM specifications, the 7556 spark plug is a direct-fit replacement for a variety of Honda motorcycles - including the popular CB1000R, CB650R, CBR1000RR series, CBR600RR, and VFR1200F models. The factory-preset gap, corrosion-resistant ceramic insulator, and high ignitability features make it an ideal choice for riders seeking reliable performance and long service life from their ignition system.