KTM TPI / TBI Spark Plug Laser Iridium by NGK

NGK ZGR7GI-13G Spark Plug (OEM part number 55439193000). This is the recommended spark plug for KTM / HUSQVARNA / GASGAS (250/300 TPI & TBI 2018–2026) TPI , TBI engines require this specific extended-reach/projected-design spark plug. Using standard non-TPI or generic spark plugs can lead to poor starting, misfiring, and improper fuel-air combustion.