Vibrant 10953 Bellmouth Velocity Stack Inlet Bellmouth Aluminum - 4 7

The Vibrant Performance Bellmouth Velocity Stack is precision-engineered to optimize airflow into your intake system. This velocity stack features a smooth bellmouth design that minimizes turbulence and maximizes air velocity, improving engine breathing and throttle response.

Key Features:

• Lightweight aluminum construction for durability and corrosion resistance
• 4-inch inlet outer diameter for secure fitment
• 7-inch bellmouth outer diameter provides gradual airflow transition
• CNC-machined smooth interior finish reduces air restriction
• Ideal for carbureted applications, individual throttle body setups, and turbo inlets
• Professional-grade design used in motorsports and high-performance builds

Velocity stacks are essential components for maximizing airflow efficiency in race and performance engines. The bellmouth shape creates a smooth entry path that reduces flow separation and pressure loss, resulting in improved volumetric efficiency across the RPM range.