Part # 35380301-302
Wunderlich Marathon Screen Vented

I knew within 5 minutes of my first test ride on the BMW K1600 Grand America that I would be changing the screen if I bought the bike. The OEM screen is styled to look like a cruiser screen, with a rounded top edge. The only way to get an effective pocket of still air is to raise it quite high, and then there is still a degree of buffeting from the wind getting around the the Marathon screen is cut with a much flatter and broader upper edge. The Marathon screen looks like it was made by BMW. It’s at least as sturdy as the OEM, and there is no optical distortion when you have it raised. The vent is quite clever; even when you have it “closed” so that no air is reaching the rider, air is still going through the vent and up the inside of the screen through the four “slots.” You don’t feel the breeze, but the low pressure area behind the screen doesn’t get turbulent. I was worried that the vent would obstruct my forward visibility, but I find it to be a non-issue, even with the screen raised fairly high. The screen mechanism is a little stiff out of the box. I lubricated it with some plumber’s grease (silicone and waterproof) to make it smoother. You can close it with just your left hand, but I recommend pulling over and using two hands to open it, because the vent flap flexes quite a bit if you just open it from the side. Maybe it will break in with use? I am 5’11” with a 32” inseam, and use stock Grand America bars and seat. I had hoped to get an effective air pocket with the screen just below eye level, like I could with my R1200RTW, but I’m afraid that the K1600 screen is just too far away from the rider for that. The best air pocket at highway speeds for me, either with the OEM screen or the Marathon, is achieved by raising the screen higher and looking through it. Used in this way, the Marathon is smoother and quieter than stock (stereo is much more effective too.) I experienced no turbulence or back pressure. I’ve seen no negative handling effects at speeds up to 85 MPH. Buy once, cry once. This screen is worth every penny, and I recommend it for the K1600B.

This is a wonderful windscreen. I installed it in a 2023 K1600B, and not only does it protect me much more from the wind, it makes the bike wiggle much less because of wind gusts. Must have for all of you baggers out there!

I’ve only had this wind screen for a few weeks but the reduced turbulence behind the wind screen and increased stability of the the front of the bike is amazing.

I purchased the tinted Wonderlich Marathon vented screen for a BMW K1600 GT... Most importantly, I've ordered several items from this brand previously, and their attention to detail is sublime. When giving other consumers my observations and findings, I like to add that I'm 6'1" and my seat is position is on the higher setting.... So, for many that post the top of the windscreen is in their line of sight, this issue does not occur unless the windscreen is fully extended. I find that extending the windshield only a few inches will stop all wind buffering on top of my helmet (Schuberth C5), and shoulders. I can ride at secondary roadway speed w/ the visor fully opened on my helmet (not slamming shut at speed). And of course, as speed increases (highway speed), I still find it quite smooth by raising the windscreen up just below eye level. Any further and the windscreen would be in my line of sight, and I would feel the back pressure on my back. However, you could open up the vent slightly to relieve this pressure. After all, you are on a motorcycle!!

Thank you for the fast shipment got to try the screen this weekend and did over 1000km I can't say enough, it is amazing quality and a huge improvement on the ride, wind noise, and buffering. 5 stars

Excellent windshield, fit and finish is flawless. Super fast shipping and windshield was protected very well by the packaging. very good wind protection and the vent works better than expected. If you don't like it you should stop riding, get a car. The only con: very pricey.

Materials and fitment are consistent with Wunderlich high quality. However, and this pertains to me personally, the top edge of the polycarbonate windshield sits directly in my line of sight even at the adjustable windshields lowest position on my K1600GT, so, I removed it immediately. Sorry. No riding review.