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Hooker Manifold Back Exhaust System

1975-1987 Chevy/GMC 1/2, 3/4, 1-Ton Truck (2WD), 1975-1991 Blazer/Jimmy//Suburban/Carryall/Yukon/1-Ton Crew Cab (2WD): 265-400, 2.25" Exhaust System

Part # 7504HKR Be the first to write a review
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Designed for manifold back applications. This system uses 2.25-inch 16-gauge aluminized tubing to reduce back-pressure and improve engine efficiency. The system is mandrel bent to eliminate any crush sections in the tubing to help maximize the exhaust flow for better performance.


  • Mandrel Bent Tubing Eliminates Restrictions in Bends and Improves Exhaust Flow
  • Reduces Backpressure
  • Improves Engine Efficiency
  • Hardware Included
  • Instructions Included

About Hooker

Since the golden era of drag racing in the 1960s, Hooker has helped more racers reach the Winner's Circle than any other header company. From the stoplight to the race track, Hooker exhaust technology will make your car or truck perform and sound better.

Brand Hooker
Emission Code4
Exhaust SeriesHooker
MaterialAluminized Steel
Muffler TypeNone
Product TypeExhaust System
Sound LevelPipe Only
System TypeManifold-back
Tubing Diameter (in)2.25
Type of ExhaustManifold-Back
Part Number7504HKR

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle


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