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Hooker Maximum Flow Muffler

The Maximum Flow flows either direction, allowing for easy installation. Single 2-1/2" Offset Inlet, Single 2-1/2" Offset Outlet

PART# 21604HKR

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To use as replacement on Mustang, cut off inlet/outlet pipes flush with stock mufflers and weld in place. Stock hangers must be welded to new muffler.

Overview

The Hooker Maximum Flow muffler actually flows 99% and produces more horsepower and torque than a 2-1/2" open pipe. The Maximum Flow is constructed of an aluminized steel case with stainless steel internal core and uses a high temperature packing material to absorb excessive noise while allowing a mellow powerful sound. As with all absorption type silencers, the Maximum Flow will be most effective for sound control with lower compression (8.5 to 1 and lower) motors with conservative Camshafts and with applications using catalytic converter(s). The Maximum Flow flows either direction, allowing for easy installation.

Features:

  • High Temp Packing Material Absorbs Excessive Noise while Allowing a Mellow Powerful Sound
  • Bi-Directional Exhaust Flow Design
  • Stainless Steel Perforated Exhaust Core
  • 4-3/4"H x 10-1/4"W x 14"L 16 Gauge Fully Welded Aluminzed Steel Case
  • Single 2-1/2" Offset Outlet
  • Single 2-1/2" Offset Inlet
  • Feature intricate stainless steel, robotic weld seams

Specs

BrandHooker
Emission Code5
Inlet Diameter (in)2.5
Inlet PositionOffset
Outlet Diameter (in)2.5
Product TypeMuffler
Type of MufflerGlass Pack
Part Number21604HKR

Emissions

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.

Tech Resources

To use as replacement on Mustang, cut off inlet/outlet pipes flush with stock mufflers and weld in place. Stock hangers must be welded to new muffler.
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    *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.