This BMW R1150GS Windscreen V-stream Windshield ZTechnik Z2422, Clear Tall Touring Screen rugged 5/8-inch steel lateral bracket adds stability and strength. Substantially improved airflow and wind protection are immediately evident with ZTechnik's new windshield. Beyond the increased size, this windshield is made from 4.5mm hardcoated Lexan FMR polycarbonate sheet. It resists everyday scuffs and wears 100x better than the stock shield. And as well, it is optically transparent.