64-72 A-Body 2.5in Exhaust System w/X-Pipe

The 64-72 A-Body 2.5in Exhaust System w/X-Pipe from PYPES Performance Exhaust is a bolt-on performance upgrade specifically engineered for first-generation Mopar A-Body muscle cars and street machines. This cat-back system is designed for enthusiasts who demand improved engine breathing, better throttle response, and a more aggressive exhaust note without sacrificing reliability or drivability.

The system features 2.5-inch diameter tubing that provides optimal flow characteristics for small-block and mid-block engines common in A-Body platforms. The integrated X-pipe design balances exhaust pulses between cylinders for improved scavenging and low-end torque delivery. This technology effectively reduces backpressure compared to traditional H-pipes or single pipes, making it ideal for both naturally aspirated and slightly boosted applications.

This exhaust system fits 1964–1972 A-Body vehicles, including Dodge Dart, Plymouth Duster, and Valiant models equipped with inline six-cylinder or small-block V-8 engines. Installation requires basic hand tools and typically takes around 2-3 hours, ensuring a straightforward upgrade for your classic vehicle.