Summit Racing 2.5 Header-Back Dual Exhaust Kit Aluminized Chevelle GTO 680131

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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.