Hooker Aero Chamber Muffler

The Aero Chamber Muffler produces a deep throaty powerful sound that will not change with time. Single 2-1/2" Center Inlet, Single 2-1/2" Center Outlet

Outlet Position

PART# 21516HKR

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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.


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


Automotive Item GradeHigh Performance
Body Height (in)4.75
Body Length (in)14
Body Width (in)10.25
Emission Code5
Inlet Connection TypePipe Connection
Inlet Diameter (in)2.5
Inlet PositionCenter
MaterialAluminized Steel
Mounting TypeUses Factory Hangers
Muffler SeriesAero Chamber
Muffler TypeReflection
Outlet Connection TypePipe Connection
Outlet Diameter (in)2.5
Outlet PositionCenter
Overall Length (in)17
Product TypeMuffler
Sound LevelAggressive Sound
Type of MufflerChambered
Part Number21516HKR


This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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