Zero Gravity Double Bubble Series Windscreen for 2007-2008 Yamaha YZF-R1 Best optics of any windscreen on the market. All are fabricated using highly specialized &rsquo;blow molding&rsquo; techniques similar to those used to form aircraft canopies. The result is virtually distortion-free optics Made from the finest grade of 1/8 in. acrylic plastic. Each windscreen is stretched as it is formed, a process which results in superior strength and flexibility. This flexibility allows the windscreen to absorb road vibrations and resist cracking. Factory drilled holes and profiles that match your O.E.M fairing for a precision fit Developed by Zero Gravity R&amp;D in 1995 for Team ZG&rsquo;s race bikes, the Double Bubble is now seen on race tracks around the world Formed with a wedge-shaped bubble in the center of the windscreen, the Double Bubble was originally designed to provide superior aerodynamics for a rider tucked in behind the windscreen