FAST 146073-8 LSXHR 103mm Intake Manifold Medium Velocity Stack Set

LSXHR 103mm Intake Manifold Medium Velocity Stack Set The LSXHR 103mm Intake Manifold's interchangeable velocity stacks allow for the fine tuning of the LSXHR's powerband. Available in tall, medium and short, these stacks can be mixed and matched to improve performance and also to fine tune an engine on a cylinder by cylinder basis.