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Product Overview:
Up for sale is a genuine Summit Racing 2.50-inch Aluminized Steel Header-Back Dual Exhaust System Kit. Designed specifically for header-equipped classic GM mid-sized passenger cars, this complete kit features smooth mandrel-bent tubing and performance turbo mufflers.Upgrading to a 2.5" mandrel-bent system dramatically improves exhaust gas scavenging, clears engine backpressure bottlenecks, and gives your high-performance V8 build that deep, timeless performance muscle car growl.
Confirmed Vehicle Application Fitment:
This 680131 layout is highly popular for classic 1973–1974 era GM mid-sized vehicles, including:
Chevrolet: Chevelle (1973), Malibu (1973–1974), El Camino (1973–1974), Monte Carlo (1973–1974)
Oldsmobile: Cutlass & Cutlass Supreme (1973–1974)
Pontiac: GTO (1973), LeMans (1973–1974), Grand Prix (1973–1974)
Buick: Century (1973–1974), Regal (1973–1974)
Key Features & Specifications:
2.50"
Diameter Tubing:
High-flow 2.5" intermediate sections and tailpipes optimize flow velocity.Heavy-Duty
Aluminized Steel:
Durable, corrosion-resistant tubing designed to offer excellent longevity and thermal management at a great value.
Mandrel-Bent Performance:
Clean, unwrinkled pipe geometry maintains a true interior diameter all the way to the split rear exit for uninterrupted gas flow.
Complete Installation Kit:
Includes 2x high-flow natural-finish turbo mufflers, structural heavy-duty vehicle exhaust hangers, brackets, and heavy pipe clamps.
Note: Due to variations in different manufacturer headers, modifications to the length and/or angles of the intermediate pipes may be required when connecting to your specific header collectors.
