Enhance the performance of your motorcycle or scooter with NGK Laser Iridium spark plugs in SILMAR9B9-4 pack. The reliable spark plugs are manufactured with high-quality materials and advanced technology to ensure smooth ignition and efficient combustion. The spark plugs are compatible with several brands, including Yamaha, Honda, and Kawasaki. They come in a pack of four, making it convenient for you to replace all the plugs at once. Upgrade your ride and enjoy a smooth and efficient performance with NGK Laser Iridium spark plugs.