Hot Fire 300 High Performance Spark Plug Wire Set Honda VTX Need more performance from your VTX Upgrade your spark plug wires for more efficient performance! Features These plug wires from Scott Performance will do the trick They are 8mm 300-ohm with a silicone sleeve and have straight hi-temp silicone boots just like the ones Nascar uses Dyno tests have shown a 12+ HP increase over stock wires Note: May ship with Scott Performance branded packaging - wires are identical and produced in the same factory.