FEATURE- Velocity stack features lightweight and shiny with a reasonable radius for a cold air intake that will benefit airflow MATERIAL- AICARS turbo inlet stack is made of aluminum alloy with anodized powder coated surface for a long-lasting use DIMENSION- 16.5x6.3cm/6.6x2.48''(OD*H); Inlet Inner Diameter: 7.1cm /2.8"; Inlet Outer Diameter: 7.3cm/3''. Please refer to the measurement for comparison before purchase FUNCTION- The intake horn smooths the air flow by preventing boundary layer separation. Prefessional installation is required PACKAGE- Comes with 1 x 3'' Velocity stack; Color: Red; Should you have any queries or enquiries please tell us