Pit Bike Performance HT Lead Splitfire This performance HT Lead pack from American company SPLITFIRE will help to give your engine that little bit more power & response & it is worth paying that little bit extra if you are thinking about replacing your lead or simply buying a spare. The HT lead & cap are silicone with a high performance twin core this twin core improves spark & therefore engine performance. Will fit all engines & all engine capacities. Summary\n Silicone plug cap & lead\n Twin core technology\n Improved spark\n Improved engine performance\n Universal fitment