Velocity stack feature for more air flow. ???? Cone Filter Alternative – No bulky filter needed; saves space and weight.
4" UNIVERSAL VELOCITY STACK FOR COLD/RAM ENGINE AIR INTAKE/TURBO HORN BLACK
Universal 4" Black Velocity Stack For Cold/ Ram Engine Air Intake/ Turbo Horn
4" UNIVERSAL VELOCITY STACK FOR COLD/RAM ENGINE AIR INTAKE/TURBO HORN SILVER
4" Universal Velocity Stack For Cold /Ram Engine Air Intake /Turbo Horn Red
Universal 4" Blue Velocity Stack For Cold/ Ram Engine Air Intake/ Turbo Horn
US SHIP 3" 4'' 5" Velocity Stack Adapter Short Ram Cold Air Intake Turbo Horn