Package included: 1PC X windshield Installation instruction not included Mounting width required on your bike's al screen betweenhinge posts is 210mm / 8.25 inches (+/- 10 mm / 0.5 inch, dependent upon your screen's curvature) Width of spoiler/aerofoil: 280 mm (11 inches) Overall height of spoiler/aerofoil: 120 mm (4.7 inches) The Screen is supplied with extension arms and Double Hinges to provide an increased range of movement and adjustment - giving a total up/down vertical range of upto + or - 110mm, while still providing the same adjustment of the spoiler angle, regardless of the spoilers height. Professional modified Acrylic clear windshield provides good-looking while adding an excellent degree of wind protection. Adjustable windshield, fixed on the above of al windshield suitable for nearly any bike with a windscreen. The wind protection can be significantly better and faster driving noise can be minimized. More comfortable and more relaxed travelling even on faster stretches! If you go off the road the spoiler can through the folding mechanism very simply be removed and soft rubber spacer will not bring disadvantage or risk of injury in the area Its hardware is fully adjustable angle for Easy installation without modification