A body kit or bodykit is a set of modified body parts or additional components that install on a stock car. Typically composed of front and rear bumpers, side skirts, spoilers, bonnets (bonnet scoop), and sometimes front and rear side guards and roof scoops. There are many companies that offer alternatives to the original factory appearance of the vehicle. Body kit components are designed to complement each other and work together as a complete design. Despite this, the 'mix and match' approach is often seen on cars, where the front of one body kit will be matched with the rear of another, for example.