Size:
• Neck Side: 3.5"/88.9mm OD (This is the connection side. Use with 3.5" coupler for connecting to pipe, tube or turbo)
• Bellmouth Side: 6"/152.4mm OD
• Neck Side: 3.5"/88.9mm OD (This is the connection side. Use with 3.5" coupler for connecting to pipe, tube or turbo)
• Bellmouth Side: 6"/152.4mm OD
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.