not cover the sides of the crankcase or gearbox. Aftermarket kits – 'lowers' – are available to extend some half fairings into full fairings. Due to the popularity of these kits, some motorcycle manufacturers have started to supply their own full fairing conversion kits and even offer their half faired models new with a full factory-fitted kit. Quarter A windscreen and minimal fairing extending around the headlamp fixed to the triple clamp. Also called a café fairing or bikini fairing, it stops well below the level of the rider's head, relying primarily on air deflection to protect the rider's head and chest from the slipstream. Handlebar A Handlebar fairing, also called headlight fairing or headlamp fairing, is not fixed to the main chassis as with other types of fairings, which do not move. A handlebar fairing complete with screen is like an expanded and extended nacelle. It is attached only to the forks or yokes, encompassing the headlight and instruments, and varying portions of the handlebars, and moves with them as the bars are turned. Belly pan Quarter and half fairings are often paired with a belly pan below the engine for diverting air flow away from under the engine to reduce aerodynamic lift, as well as cosmetic reasons. Some track day or racing rules require belly pans to catch leaked fluids. Rear fairings A tail fairing, sometimes referred to as a tail unit or race tail, is mounted behind the seat and rider. Some also extend to the sides of, and below, the saddle and usually providing a small storage space. Particularly on sports/ race replica style bikes with dual seats, detachable colour matched Tail Humps are also available which either cover the passenger seat or are exchanged for it, blending in with the tail unit and side panels they give extra streamlining and the look of a single seater racing bike Kawasaki when tail units were fitted to the 1972 250cc S1 Mach I, 350cc S2 Mach II, and 750cc H2 Mach IV models. Streamliner A streamliner motorcycle, such as the NSU Delphin III, uses a fairing which completely encloses both the entire motorcycle and the rider to provide the best possible drag coefficient ratio. Materials Acrylonitrile butadiene styrene (ABS) plastic is commonly used in original equipment sport bikes and certain aftermarket fairing manufacturers due to its strong, flexible and light weight properties. The advantage of ABS over