ACCEL Extreme 9000 Spark Plug Wire - Custom Fit - Single Wire Replacement Lead H764C36XL There are four small ventilation

There are four small ventilation holes molded into the top of every ST5 helmet

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ACCEL Extreme 9000 Spark Plug Wire - Custom Fit - Single Wire Replacement Lead H764C36XL There are four small ventilationACCEL Extreme 9000 Ceramic wire sets have an ultra high temperature double silicone construction wire rated at 600 Degrees F peak and featuring a Ceramic boot that can withstand up to 2000? F. The wire uses a 500 ohms per foot Ferro Spiral core developed for performance use. It provides excellent energy delivery to the spark plugs, while providing the highest level of RFI EMI suppression. The Extreme 9000 Ceramic wires also feature stainless steel