This performance package includes the Momentum GT air intake system, Silver Bullet throttle body spacer, Magnum SHIELD Pre-filter, Momentum replacement intake air filter Pro DRY S and a Restore kit (P/N: 90-50501). The intake system was designed around the largest filters possible. Each kit comes with two huge 9" tall inverted top cylindrical air filters (Total of 2): One constructed in our 5-layer progressive oiled media (Pro 5R) and the other made out of our 3-layer synthetic oil-free media (Pro DRY S). These air filters are wrapped in reinforced metal providing maximum strength to prevent filter collapse. A Magnum SHIELD Pre-filter is included to protect your performance air filter from water splash, heavy rainstorms. The smooth one-piece high quality sealed housing with auxiliary air scoop is used to eliminate the use of multiple-piece housings and ensure the coolest air intake charge available. A large, clear sight window is used for easy filter inspection. A urethane plug is also included if you wish to block off the auxiliary air inlet. This system uses a high quality, dyno-tuned intake tube to achieve maximum power gains while maintaining a perfect fit. Premium clamps and a silicone bellows coupling are used for strength and flexibility while also providing the most secure installation available. Momentum intakes are designed with fewer parts for a quick and simple installation. The throttle body spacer's Serrated/Helix design creates air turbulence in the intake manifold. This turbulence increases the air pressure in the combustion chamber resulting in increased horsepower, torque and improved throttle response. The Serrated/Helix combination design also reduces intake whistle that occurs with other helix only designs. Emissions Disclaimer: This product does not require a CARB EO# (Vehicle does not exist in U.S.)