Free the unmistakable roar of the classic American muscle car with the Pypes Performance Exhaust 3-inch X-pipe crossmember-back exhaust system. A Pypes purpose-built upgrade redefines both the performance and personality of vintage Mopar iron.
Above Left: The Pypes 3-inch X-pipe exhaust system features a true header-back design, expertly contoured to follow the unique floor pan geometry of the E-body platform for a precise, factory-style fit. Above Right: Pypes also offers 2.5-inch stainless steel exhaust tips for the ’Cuda and Challenger, carefully crafted to replicate the iconic factory appearance while delivering modern durability.
Engineered with uncompromising precision for 1970–1974 E-Body Challengers and ‘Cudas (Part No. SME13), this system unites modern exhaust design with the raw, mechanical heritage of one of Chrysler’s most celebrated platforms. Every curve, bend, and junction reflects a conscious devotion to performance, durability, and authenticity that aligns with the legacy of the E-Body.
At its core, the system is a full 3-inch (2.5-inch also available) mandrel-bent tubing that maximizes exhaust flow, allowing the engine to exhale without limitation while delivering measurable gains in horsepower and throttle response. Smooth internal surfaces maintain exhaust gas velocity from the collector to the tailpipe, eliminating turbulence associated with flow restricting compression-bent systems.
The result is a more immediate throttle response, enhanced mid-range torque, and a stronger top-end pull, recasting the driving experience into something more urgent, responsive, and connected to the road.
Above: The SME13 exhaust system includes everything needed for a complete installation on any 1970–74 E-body, with all clamps, hangers, and necessary hardware provided for a straightforward, hassle-free fit.
A 409 stainless steel construction provides the resilience required for real-world operation. Corrosion resistance supports long-term dependability though changing climates, varied road conditions, and extended storage intervals common with collector cars. Structural integrity stays intact through repeated heat cycles, engine vibration, and sustained operation under demanding conditions.
The X-pipe arrangement refines exhaust-pulse timing, improves scavenging efficiency, and stimulates a balanced flow path between the cylinder banks. The result is a deeper, smoother exhaust tone with reduced harshness, improved tonal clarity, and a refined acoustic character that seizes the essence of the muscle car era.
Sound character remains a clarifying attribute of any performance exhaust system, and Pypes provides a range of muffler options tailored to each enthusiast’s preference. Turbo Pro mufflers deliver a subdued, classic tone with minimal interior resonance, perfect for long-distance cruising. Street Pro mufflers deliver a more powerful exhaust presence with restrained aggression, ideal for spirited driving.
Above Left: The X-pipe actively blends exhaust flow to elevate performance, delivering stronger high-RPM power and a smoother, more refined exhaust note, while still preserving that unmistakable aggressive edge. Above Right: The 3-inch system is available with four distinct muffler options, offering a range of sound profiles from subtle and street-friendly to bold and aggressive.
Race Pro mufflers highlight high-performance acoustics with a stronger, more prominent edge under throttle. Violator mufflers deliver an unfiltered, commanding sound with maximum aggressiveness, designed for enthusiasts who demand attention with every exhaust stroke. Each possibility reshapes the vehicle’s audible signature while preserving efficient exhaust flow.
Installation benefits from a complete hardware package that includes cadmium-plated U-bolt clamps, heavy-duty hangers, and precision-formed routing that follows factory geometry. Secure mounting enables long-term durability, minimizes undesirable movement, and preserves proper alignment during dynamic driving conditions.
Above: Pypes engineered stainless steel exhaust tips that closely replicate the original factory designs. Whether it is the Challenger-style tips (left) or the ’Cuda-style tips (right), Pypes offers beautifully crafted options tailored specifically for E-body models.
The rear exit features a 2.5-inch outer diameter tailpipe configuration that accommodates Pypes exhaust tips, including EVT86 for Challenger and EVT87 for ’Cuda applications. The tips’ detail enhances the visual presentation and complements the vehicle’s restored chrome and polished trim.
A lifetime warranty emphasizes confidence in materials, craftsmanship, and sustained performance. The system represents more than a simple component upgrade. It serves as a long-term investment in the preservation, enhancement, and continued delight of the Mopar driving experience.
Above: Pypes offers four distinct sound profiles for E-body enthusiasts. For a mellow, refined tone, choose the Turbo Pro. If you are after a stronger, more assertive presence, the Race Pro delivers. Craving that classic muscle car sound? The Street Pro fits the bill. And for those who prefer to make a late-evening statement, the Violator series ensures the whole neighborhood knows you have arrived.
For enthusiasts committed to authenticity, performance, and undeniable presence, the Pypes 3-inch X-pipe exhaust system furnishes a captivating blend of power, tone, and refinement that ensures every start, throttle input, and mile driven reflects the enduring spirit of classic Mopar muscle. Contact Pypes Performance Exhaust for more details about all its exhaust products.
