KR8BI / 4347NGK iridium spark plugs currently represent the highest-quality technological solution. They feature an iridium-alloy on the middle electrode. It is welded on in a special process using laser. The precious metal iridium starts melting at a temperature of 2450°C and is therefore very resistant to spark erosion. To sum things up, by using the iridium spark plug, the service life is doubled on average in comparison to standard nickel spark plugs.12mm Thread x 19mmWrench Size:16mmSpark gap: 0.7mmSolid TerminalApplication: Can-Am Spyder RT (12-13)2 requiredSold individually