ACCEL Motorcycle 300+ race wires provide the peak ignition output you need for race-winning or maximum street performance. The extra thick 8.8mm silicone jacket and silicon insulation eliminate electrical leakage or RFI interference that interrupts control modules. 300+ Wire delivers peak performance even at high temperatures over 550 degrees F. The ultra-strong Aramid core and fiberglass braiding provide resistance to vibration and wire stretch to make a wire set that is durable and reliable. The low 150 ohms/ft. resistance of the Ferro-Spiral core material deliver maximum spark energy to the spark plugs without diminishing or suppressing the spark energy.