These carbon fiber front lips are from the M3 Competition Package and are a direct fit to any standard E90 or E92 M3 front bumper. They add a little flair and definition to the front end. The stock front bumper can appear too high off the ground and these carbon lips make the car appear lower. These are factory BMW trim pieces so the car was designed to have them (not a tacked on afterthought). The ZCP and other special models represent the top of the M3 line which makes these a great addition to any 'standard' M3, including E90 sedan and E93 convertible models. They are also functional - channeling air under the car and into the undertrays for better cooling and aerodynamic efficiency.