The perfect plug for four strokes or big bore 2 strokes.
FEATURES: Gold plated core is resistant to heat related failures The rhodium and platinum element holds heat longer for a better idle. Fox exclusive insulation won't turn brittle in temparatures of up to 1800 degrees F. Idle bar is machined instead of welded on eliminating idle bar/weld failures. Medium heat rage for use with most brand engines and fuels.