Description
Overview
The Flowmaster Crossmember-Back Exhaust System is a mandrel-bent, headers-back kit custom designed for most 1964-1967 GM A-body cars. Built for the enthusiast who wants a true dual exhaust setup, this system delivers the flow, fit, and finish that make a classic muscle car breathe and sound the way it should. Every tube is formed from 3.00-inch aluminized steel, and the mandrel bending preserves full diameter through every curve for smooth, unrestricted exhaust flow.
Because it ships as a complete pipe kit minus the mufflers and hangers, you stay in control of the final character of your build. Pick the Flowmaster performance mufflers that match the sound level you want, add your preferred hangers, and finish the system on your terms.
Key Benefits
At the heart of the design is an H-pipe that equalizes exhaust gas pressures side to side. That balance improves performance while smoothing and refining the tone, and the routing is engineered for maximum clearance under the chassis. Dual tail pipes complete the true dual layout, giving your A-body the aggressive stance and presence of a purpose-built exhaust.
The 16-gauge, 3.00-inch aluminized steel tubing carries a silver pipe finish and is joined with U-bolt clamping for a straightforward, secure assembly. It’s a system designed for an easy fit and backed by a 3-year Limited Warranty. It is also CARB (California) compliant with an Emission Code of 3.
- Mandrel-bent 3.00-inch aluminized steel tubing for maximum, unrestricted flow
- H-pipe crossover to equalize exhaust pressures for performance and refined tone
- Dual tail pipe design for a true dual exhaust look and sound
- 16-gauge pipe wall with silver finish and U-bolt clamping
- Custom-engineered routing for maximum clearance and an easy fit
- CARB (California) compliant, Emission Code 3
- Backed by a 3-year Limited Warranty
Configure Your System
Mufflers and exhaust tips are sold separately so you can dial in exactly the sound and style you’re after. Choose the Flowmaster performance mufflers that suit your build, from the deeper, more aggressive Super 44 Series to the smoother Super 50 Series. The system requires a 3.00-inch offset inlet with an opposite-side offset outlet muffler, such as part #943048 (Super 44 Series) or part #53058 (Super 50 Series). New hangers are also required and not included.
Fitment
This headers-back exhaust system is custom designed for most 1964-1967 GM A-body cars, making it an ideal foundation for building a complete true dual exhaust. Always confirm your specific vehicle and header configuration before finalizing your muffler and hanger selections.
