The Chevrolet SS Sedan is one of GM’s most underrated performance vehicles, combining a powerful 6.2L LS3 V8 with a refined, rear-wheel-drive chassis.

But even with more than 400 horsepower from the factory, there’s plenty of untapped performance waiting to be unlocked.

The American Racing Headers Long System for the 2014–2017 Chevrolet SS Sedan is engineered to maximize exhaust flow, improve engine efficiency, and deliver substantial horsepower and torque gains.

Featuring premium American-made construction, long-tube headers, high-flow merge collectors, and a complete 3-inch X-pipe system, this package provides a comprehensive exhaust upgrade designed specifically for the Chevy SS platform.

Proven Horsepower & Torque Gains

American Racing Headers developed its Chevy SS Long System to deliver measurable performance improvements without requiring extensive engine modifications.

During chassis dynamometer testing with the factory mufflers installed, the ARH system produced gains exceeding:

• +30 Rear-Wheel Horsepower
• +32 Rear-Wheel Torque

These improvements were achieved before additional engine tuning.

When combined with proper tuning and a quality cold air intake, American Racing Headers reports potential gains of up to 50 rear-wheel horsepower.

That’s a substantial improvement for an otherwise relatively stock LS3-powered vehicle.

Actual results will vary depending on engine configuration, supporting modifications, tuning, and testing conditions.

Premium 304 Stainless Steel Construction

Like every American Racing Headers system, the Chevy SS Long System is 100% manufactured in the USA, using high-quality materials and precision fabrication techniques.

The entire system is constructed from durable 304 stainless steel, providing excellent corrosion resistance and long-term durability.

Heavy-duty 3/8″ thick laser-cut stainless steel flanges provide a strong, stable mounting surface designed to resist warping and maintain a reliable seal against the cylinder heads.

Each header also features hand-ported, TIG-welded inlets to promote smooth exhaust flow from the cylinder head into the primary tubes.

From the headers to the X-pipe assembly, ARH delivers exceptional craftsmanship and attention to detail.

High-Performance Merge Collectors

The ARH Long System features precision-engineered merge collectors with integrated scavenger spikes.

Unlike conventional collectors that simply combine exhaust tubes, merge collectors are designed to promote smoother exhaust gas transitions and improve scavenging efficiency.

The integrated scavenger spikes help manage exhaust flow as the individual primary tubes converge into the collector.

Together, these features help reduce exhaust restriction, improve cylinder scavenging, and support stronger horsepower and torque production.

Choose Your Primary Tube Size

The American Racing Headers Chevy SS Long System is available in two primary tube configurations:

1-7/8″ Primary Tubes

An excellent choice for stock and mildly modified LS3 engines, as well as street-oriented performance builds looking for improved exhaust flow and strong overall power delivery.

2″ Primary Tubes

Ideal for more aggressive engine combinations, including larger camshafts, upgraded cylinder heads, increased displacement, and forced induction applications where additional exhaust flow capacity may be beneficial.

Both configurations feature ARH’s optimized tube routing, high-flow merge collectors, and premium stainless steel construction.

Complete 3-Inch X-Pipe Exhaust System

Unlike header-only packages, the ARH Long System includes a full 3-inch X-pipe exhaust assembly extending from the header collectors back to your factory or aftermarket axle-back mufflers.

The X-pipe configuration allows exhaust pulses from both cylinder banks to interact, helping improve exhaust flow and scavenging efficiency.

The larger 3-inch tubing provides additional exhaust flow capacity compared to more restrictive factory configurations, making it an excellent foundation for future performance upgrades.

The system is designed to connect directly to your existing factory or aftermarket axle-back exhaust, allowing you to retain your preferred muffler setup.

High-Flow Catalytic Converter Options

Catted ARH systems feature severe-duty 300-cell catalytic converters, designed to provide high-flow exhaust performance for demanding applications.

For customers seeking an upgraded catalytic converter option, ARH also offers 400-cell G-Sport catalytic converters.

Please contact us before ordering if you would like to upgrade to the G-Sport catalytic converters.

Engineered Specifically for the Chevy SS

Fitment is just as important as performance.

Rather than adapting a universal header system, American Racing Headers engineered its Long System specifically around the 2014–2017 Chevrolet SS Sedan chassis.

Optimized primary tube routing provides excellent clearance and fitment, while the included high-quality installation hardware helps simplify the installation process.

Whether you’re upgrading a stock LS3, building a cammed street/strip combination, or preparing a high-horsepower forced-induction project, the American Racing Headers Long System delivers the quality, performance, and exhaust flow needed to support your build.

Available Options

Primary Tube Diameter

• 1-7/8″ Primaries
• 2″ Primaries

Catalytic Converter Options

• Severe-Duty 300-Cell Catalytic Converters
• Optional 400-Cell G-Sport Catalytic Converters – Contact Us Before Ordering