Skunk2 Racing Ultra Series Intake Manifolds are the phenomenal next generation manifolds for the aftermarket intake technology. Made from high-grade 356 aluminum alloy for a strong and lightweight design, CNC-machined for a precise fit, Ultra Manifolds are individually inspected for best quality assurance. The large 90mm throttle body opening, 87mm velocity stacks, high-velocity intake runners, with smooth transitions, modular design and years of engineering research and development allow the Ultra Series Manifolds to outflow the competition. Designed to be used with built, high-horsepower naturally aspirated or forced induction setups, the Skunk2 Ultra Series Intake Manifolds help provide a new affordable level of high-end intake technology to the marketplace.