Velocity Stack, Aluminum - 4.00" Inlet - Silver - VS400-SIL Head Gasket featuring the same high-quality specifications

featuring the same high-quality specifications as our more comprehensive Mega Power Exhaust Systems

it is always recommended that you consult with a tuner immediately following installation

This could potentially cause engine seizure

Cast aluminum end tanks with incorporated diverters for maximum flow

spring-centered race disc features a spring-center construction to properly damp torsional vibrations and resist failure under harsh conditions

Velocity Stack, Aluminum - 4.00" Inlet - Silver - VS400-SIL Head Gasket featuring the same high-quality specificationsThese lightweight aluminum velocity stacks are perfect to optimize air flow into your vehicles intake pipe or turbo inlet. Made from 1070 aluminum alloy and anodized.