Just ADDING MY Comment to get this HDT Forum Going again.....
I use the
Standard Stock 6R12 HD plug Nothing fancy but it WORKS BEST for Me.
Hard starting bike problems in MY findings 50% of the time NEED plugs replaced.
The 6R12's are the least expensive replacement to make a Bike Start, Run GOOD again..
Don't let HD know the CHEAPER ones are the BEST...
signed....BUBBIE