Vibrant Bellmouth Velocity Stack Aluminum (4in Neck O.D. 7in Bellmouth O.D.) - 10953

Vibrant Performance Bellmouth-style Velocity Stacks allow for less turbulent air to enter your intake, resulting in air flow improvements and, ultimately, torque and horsepower gains. They are spun from 1/8" (3mm) thick 6061 Aluminum Alloy.