Fits BMW X3 F25 20112017. Designed to match the original car design for a precise fit on the rocker panel area. Material and finish Made from materials with strength and rigidity. Coated with a gloss finish that resists fading and maintains appearance. temperature resistance for long lasting durability. Helps improve the bumper's pressure resistance. Function and performance Rocker panel diffusers reduce airflow from the sides into the bottom, helping to improve vehicle stability at higher speeds. Clean lines and a three dimensional design provide a sporty look that enhances the car's visual appeal. Installation No modification or cutting required. User friendly design enables easy and hassle installation. Why you need this Enhances stability and handling at speed by managing airflow under the vehicle. Upgrades the vehicle's appearance with a precise, OEMlike fit and sporty styling. Durable construction and finish maintain looks under temperature and driving conditions. Use scenarios Daily driving and highway speeds: improves stability and adds a refined, sporty appearance. Long highway trips or spirited highway driving: airflow management supports steadier handling and reduced lift at speed. Car shows or weekend cruises: enhances visual impact with clean, three dimensional lines and gloss finish. Key attributes Compatibility: BMW X3 F25 20112017 Function: reduces underbody airflow to improve stability at speed Material: strength, rigid construction Finish: gloss, temperature resistant, fade resistant Installation: no modification or cutting required, userfriendly design