Hooker 21507HKR Aero Chamber Muffler, 3-1/2 Inch Center In/Out

The raw aluminized steel Aero Chamber is designed to do much more than simply muffle exhaust noise. The Aero Chamber Muffler produces a deep throaty powerful sound that will not change with time. The Hooker Aero Chamber uses a unique step principal, similar to that which is currently popular in racing header design. The aerodynamically designed chambers flow 23% better and produce more horsepower and torque than the most popular high performance brand.

• 4-3/4"H x 10-1/4"W x 14"L 16 Gauge Raw Aluminzed Steel Case
• Reinforced Inlets and Outlets
• Single 3-1/2" Center Outlet
• Feature intricate stainless steel, robotic weld seams
• Single 3-1/2" Center Inlet
• Stainless Steel Perforated Internal Plate Eliminates Internal Rust
• Sound Absorption Chamber eliminates High Frequeny Sound Waves for Deep Throaty Powerful Sound
• Aerodynamic Lens Directs Sound Pressure Waves into Acceleration Chamber and Out of Muffler
• Resonance Chamber and Tuning Tube Cancels Unwanted Frequencies and Amplitudes (No annoying tin can sound or drone at cruising speed)
• Stepped acceleration Chamber Increases Exhaust Gas Velocity and Maximum Flow
• Three Internal Bulk Heads for Superior Case Durability and Stability

Installation Instructions (PDF)