A body kit or body kit is a collection of exterior modifications to a car, typically comprising front and rear bumpers (fenders), side skirts, and spoilers. There are many companies that sell these replacements as alternatives to the traditional look of the vehicle from the factory. Body kits will be 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.