Buffeting

What is the fix for the severe buffeting on the Kingpin with the stock windshield? It is so bad that above 50 MPH it blurs my vision.

Check that you have it mounted correctly and tight. You shouldn't get that at 50mph.

It is mounted correctly and the mounting is tight. Get worse the faster you go

Add the lowers. The wind is coming from under the windshield.

Hey what size si the winshield?

I installed the smaller of the shields and get no buffetting at all!

Had no issues with buffeting with my Kp Tour until I purchased a new helmet with a visor attached. Might try taking the screen off the bike and see if that makes any difference.

That is something to consider is the size of the windshield.

I put a Memphis shades windshield on my bike last year. I was riding with a tee shirt with cigs in the front pocket. The first time I took it out after installing the windshield, the buffeting from below was so bad the pack of cigs flew out of my pocket. Have since added the lowers from the same company and no more problems. The Memphis shade lowers are much more reasonably priced that the Vics. They look really nice as well.

YUP lowers are the solution

I have a KP Tour, with the large windshield and lowers. I agree here, the lowers make all the difference. They cut about 90% of the wind that would otherwise come up under the windshield. It makes riding, at any speed, much more pleasant.

I ride my KP Tour at 80 all the time with only minor buffeting.

I'm certain that will work for you as well.

Ride safe.

The other thing that should be discussed is windshield height.
I was was told several things regarding height when I was shopping for a windshield. The rule of thumb that I came to follow (according to those in the shops that I trust) is that when you are riding and looking straight ahead the top of the windshield should be equal with an area just above the tip of you nose but below the level of your eyes. The intent is that you are looking over the windshield during normal driving. This is in case you hit fog, rain, condensation or anything else that might obscure the windshield you can still see. Conversely, if you hit rain, sand/dust, or anything else in your path you can easily duck below the windshield. I bring this up because the height of the windshield will definately factor into buffeting. Try ( if you have the option) raising or lower the windshield an inch or two and see what becomes of the buffeting. Best of luck.