The Honda NGK 4-Pack Spark Plugs IMR9C-9HES are designed for street motorcycles, specifically the 05-08 CBR600 RR and 04-07 CBR1000 RR. These platinum spark plugs offer high performance and durability, making them a reliable choice for motorcycle enthusiasts. With a standard configuration and a fuel type of gasoline, these spark plugs are manufactured by NGK in Japan, ensuring top quality and compatibility with the specified Honda models. Perfect for those looking to enhance their motorcycle's ignition system with a set of performance-oriented spark plugs.