
Competition Exhaust System Header Back
- Competition Exhaust System
- Header Back
- 4WD 1966-77 Bronco with Small Block Ford 255-351W
Notes: - This dual exhaust system was designed to be used with Hooker Competition Headers - 520-6909. If the dual exhaust is being installed with any other headers modifications will be required. Hooker will not assume responsibility for fit or performance.
- All systems come without mufflers. Hooker recommends using the following mufflers with a 2.25" offset inlet/center outlet configuration:
Aero Chamber - 520-21501
Maximum Flow - 520-21601
Competition Turbo - 520-21005
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Get the Exhaust Sound You're Looking For!
Hooker Headers Competition Dual Exhaust Kits are designed to fit specific applications using Hooker Competition Headers or stock exhaust manifolds. They have 2.25" diameter 16-gauge aluminized steel tubing that's mandrel-bent to maintain a consistent inside diameter for maximum flow (press bending crushes the pipe, which can reduce volume by more than 10%).
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Notes
- The original equipment tailpipe exit location is retained on most systems unless otherwise noted below in More Info
- For racing use only (not legal for use on vehicles originally equipped with catalytic converters)
- Except for the universal kit, systems do not include mufflers. Hooker recommends using Aero Chamber, Maximum Flow, or Competition Turbo mufflers with a 2.25" offset inlet/center outlet configuration.

