Hooker Aero Chamber Muffler

The Aero Chamber Muffler produces a deep throaty powerful sound that will not change with time. Fits 3rd Gen Camaro/Firebirds. Single 2-1/2" Inlet. Dual 2-1/4" Outlets

PART# 21721HKR

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$116.95   Suggested Retail
$94.46   Holleydays Price
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The all aluminized and stainless 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.


  • Universal Camaro/Firebird Replacement
  • Single 2.5" Offset Inlet
  • Dual 2.25" Outlets
  • 4-3/4"H x 10-1/4"W x 20"L 16 Gauge Aluminzed Steel Case
  • O.E. Mounting Provisions
  • Reinforced Inlets and Outlets
  • Stainless Steel Perforated Plate eliminates Internal Rust
  • Aerodynamic Lens Directs Sound Pressure Waves into Acceleration Chamber and Out of Muffler
  • Sound Absorption Chamber eliminates High Frequeny Sound Waves for Deep Throaty Powerful Sound
  • Resonance Chamber and Tuning Tube Cancels Unwanted Frequencies and Amplitudes
  • Stepped acceleration Chamber Increases Exhaust Gas Velocity and Maximum Flow
  • Three Internal Bulk Heads for Superior Case Durability and Stability


Emission Code5
Product TypeMuffler
Part Number21721HKR


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.


    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.

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