NGK is a Japanese manufacturer established in 1936 and the world's largest supplier of spark plugs. NGK plugs are OEM-specified for the majority of motocross, enduro, and road bike engines produced by Honda, Yamaha, KTM, Husqvarna, Kawasaki, and Suzuki.
The spark plug range for off-road applications includes standard copper core, iridium, and racing grade plugs, each manufactured to precise heat range specifications matched to individual engine requirements. NGK publishes exact part number cross-references by make, model, and year, ensuring correct heat range and electrode configuration for every application. Iridium plugs provide extended service life over copper equivalents without heat range compromise.
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