Application: 1999-2005 Volkswagen Golf / GTI / R32 ( 4th Generation MK4 ) (Aftermarket spoiler ). 1999-2005 Volkswagen Golf GTI R32 Factory Style Rear Spoiler 4th Gen MK4 JSP® 339185 Primed. Note: Tri-coat color costs $ 20 more. Condition: Brand New, Primed.Manufacturer: JSP®.Material: Reinforced FRP. Features: * Reinforced FRP, sturdy & strong long product life. * Reduce drag , improve fuel efficiency & vehicle stability. * Comes with all necessary mounting hardware. * Custom design and fit for each vehicle. * Sleek streamlined appearance. A rear wing spoiler is an Stylish automotive device whose design function is to 'spoil' unfavorable air movement across the body of the vehicle while in motion, described as turbulence or drag. Spoilers are often fitted to race and high-per mance sports cars, however they have become more common on passenger vehicles. The term "spoiler" is often mistakenly used interchangeably with "wing". An automotive wing is a device whose intended design is to generate down ce as air passes around it, not simply disrupt existing airflow patterns. As such, rather than decreasing drag, automotive wings actually increase drag. Due to their association with racing, spoilers are often viewed as "sporty" by consumers.