[Feature]Featuring a lightweight, shiny build and an efficient radius, this velocity stack improves airflow in a cold air intake [Material]The turbo inlet stack is made of aluminum alloy with an anodized powder coat, this turbo inlet stack ensures durability and long-lasting performance [Size] 5.8x16.5cm / 2.28"x6.50"(Height * Outer Diameter), Inlet Inner Diameter: 9.8cm /3.35", Inlet Outer Diameter: 10.1cm /4" [Function]The intake horn smooths airflow by preventing boundary layer separation. Its optimized design also enables the engine to draw in a greater volume of denser air, resulting in improved throttle response. Professional installation is required [Pacakge]1 PCS Velocity stack Product Features
1. Modengzhe air intake cover has a smooth funnel shaped inlet to help air flow, resulting in better throttle response.
2. Designed to optimize volumetric flow rates into your induction system by preventing boundary layer separation at the inlet of your induction system.
3. Takes advantage of the large flanged filter to create a induction system inlet geometry that will eliminate this "choke plate", by preventing the boundary layer separation and resulting turbulence.
4. Accessory Only, does not include coupler or hose clamps or instructions, professional installation is highly recommended.
5. Notice: Please check the size before ordering to confirm that the product fits your needs.

Product Specifications
Color: Black
Size Type: 4-Inch
Material: CNC Machined Aluminum
Surface: Anodized and Powder-Coated Finish
Function: Decorative turbine air inlet
Application: Common to size of about 2inches
Outer Diameter: 168mm/6.6inches
Neck Inner Diameter: 99mm/3.9inches
Neck Outer Diameter: 101mm/4inches
Total Height: 65mm/2.5inches