I find that it deflects the air higher up on my torso, so its hitting me in the shoulders/head only rather then my chest as well. This is when seated fully upright.
When your tucked in its not much different, helps your helmet get under the screen.
You'll notice a LOT less wind around your torso as these guys have mentioned. I love it, but you definitely get a little more wind at your helmet area at full upright. When you tuck, you can get completely under the flow, which I wasn't able to do easily with the stocker. There's a reason the AMA boys use them besides lookin' cool in the pits...
The double bubble is pretty nice, def worth the 60-80 itll cost you. I just put one on my old cbr and it totally cleaned up the apperance of the console and adds some nice lines to the front of the otherwise flat front of the bike. I imaging it would look really sharp on the new 03 6r.
as for the airflow, the only con is that you have less air pressing your body up, and your wrists have to support the extra weight (small but noticable difference in weight on wrists)
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