Just installed this on my 19 chieftain, yeah, drilling not required, just some patience! I set the bolts with my fingers, using the pressure from the fairing to keep the bolts where I wanted. Just make sure you carefully thread them before ratcheting so as not to cross thread. Definitely took the advice of others to use a flat ratcheting wrench once I got a few good turns on each bolt. They work great and probably remove a good amount of the buffeting. They also look pretty sleek on the bike. I also noticed the JES online store is different on computer vs mobile, and was easier to find black painted ones for a little more money from JES.
So I'm getting head buffiting only when I wear my full face helmet (not half helmet) , anyone have this problem and if so did these deflectors fix the problem? It's not obvious to me where the buffiting is coming from I initially thought above the windshield but maybe it's from below. Thanks for any response, and thanks for the helpful video. I do have the freedom 14 inch windshield that has not helped buffiting.
I had the same problem and these deflectors solved it. The air is coming up from under the tank and causing the buffeting. These will give you a much calmer pocket and allows you to move your windscreen up or down to manage cooling.
