Spark Plug Wire Set - 8mm - Universal - Black Wire with Black Straight BootsThe traditional ACCEL combination of yellow wire and red spark plug boots has been added to these SuperStock Spiral Core 5000 Series wire sets, which feature color matched wire and spark plug boots in blue, black, and red. With only 500 ohms ft. of resistance, more ignition energy can reach the spark plug, producing a longer lasting, hotter spark flame kernel. The results is higher performance through improved efficiency, quicker throttle response,