Unique One-Piece Housing: The smooth one-piece 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 urethane plug is also included for extreme conditions when you want to block the auxiliary air scoop. A large, clear sight window is used for a hassle-free filter inspection Roto-mold Tube: This System uses a CAD designed, dyno-tuned, roto-mold intake tube to achieve maximum power gains while maintaining a perfect fit. Huge 7-Layer Pro-GUARD 7 Performance Air Filter: This Momentum HD is designed around a massive Pro-GUARD 7 performance 360 degree radial flow air filter with 5-layers of progressive cotton media with 2-layers of progressive synthetic media providing 99.7% cumulative efficiency for maximum filtration. The unique air filter to housing interface (PATENT PENDING) allows for maximum filter size which increases the available air volume while simplifying the installation process. The air filter is wrapped in reinforced metal providing maximum strength to prevent filter collapse Premium Hardware: Premium stainless steel T-bolt clamps are used for strength and durability while also providing the most secure installation available. Momentum HD intakes are designed with fewer parts for a quick and simple installation. Proven Results: After a rigorous design and testing phase, the results are in. The Momentum HD intake system outflows the factory intake by 38% and resulted in 16 additional horsepower and 26 lbs. x ft. torque. Power, Protection and Simplicity.