Accel 8mm Super Stock Spark Plug Wire Set For Harley Dyna Features: Delivers up to 5 times more energy to the spark plugs than even the Screaming Eagle wire sets Fully compatible with the Delphi fuel injection systems ACCEL's advance technology spark plug wire construction and low resistance Ferro-Spiral delivers maximum energy while not tripping the check engine light like most other wire sets The high temperature boots & wire can withstand over 500 degrees and not miss a beat