VTT Billet Velocity Stack (V-Stack)

3" • 4" • 5" Inlet Sizes

Running an open turbo and want to straighten airflow into the compressor for maximum efficiency? The VTT Billet Velocity Stack is exactly what you need.

Backed by fluid-dynamics principles, a proper bellmouth / velocity stack smooths incoming airflow, reduces turbulence, and improves air entry into the turbocharger—or intake on naturally aspirated applications. Unlike thin, stamped alternatives, our V-Stacks are precision-machined for strength, consistency, and performance.

Each unit is CNC-machined from 6061-T6 billet aluminum and anodized for durability and corrosion resistance. Available in 3", 4", and 5" inlet sizes, these stacks are designed to fit any intake tubing or turbocharger inlet of the corresponding diameter.