Take your engine’s performance to the next level with the Autolite Xtreme Sport Spark Plug XS4302, built for riders who demand reliable ignition and consistent power. Its iridium-enhanced .6 mm finewire center electrode works with a Sport V-trim...

Boost your engine’s performance with the Autolite Xtreme Sport Spark Plug XS4164, designed for riders who demand stronger, more consistent ignition. Featuring an iridium-enhanced .6 mm finewire center electrode and a precision-engineered Sport...

Get quicker starts and stronger performance with the Autolite Xtreme Sport XS4162 Spark Plug. Featuring an iridium-enhanced .6 mm finewire center electrode and Sport V-trim ground electrode, it delivers a more focused, consistent spark that helps prevent...