Windscreen derived from competition. Its double height diminishes the air pressure to the helmet. Made of 2 or 3 mm high-impact acrylic, resistant and durable. Round finished edge on models from 2004 meet the standards for the German TUV. Edge trim is not necessary. Made of high-impact acrylic, giving each screen added strength and flexibility. 2 or 3 mm thickness helps absorb vibration at high speeds and offers resistance from cracking or scratching. All screens are developed using information from wind tunnel testing; improves aerodynamics and wind protection by an average of 12.7%. Racing version derived from competition, the "race bubble" and double-height design helps diminish the wind's effect on a rider's helmet. Size is similar to stock (except where noted). Fits right and mounts easily. Aerodynamic tests are supplied with most windscreens.