This is my friend's HP4 with F.Fabbri Double Bubble Dark Smoke Screen
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2010 S1000RR- Austin Racing ARCS Exhaust - Bazzaz ZFi - MWR Air Filter - BST wheels - Fabbri screen, 5" stretch, lowered, Brock's Performance clutch mod & heavy spring kit & front strap kit, APE Clutch, -1 front sprocket
8.87 sec @ 158.3 on pump gas & Conti SportAttack2 tire 190/55 My YouTube channel:http://www.youtube.com/user/BMWS1000.../videos?view=0
The double bubble surely will be functionally better in keeping wind away from rider,but imho the stock shield looks better than this one on the HP4......not bad though.