1971 Buick GS Performance Exhaust Products

Flowmaster’s pre-bent tailpipes are made with 16 gauge 409S stainless steel mandrel-bent tubing and are designed to fit your vehicle perfectly with all the quality and performance that you would expect from a Flowmaster product.

Prebent pipe kits. Flowmaster’s 16 gauge mandrel bent pipe kits are designed to fit perfectly onto your vehicle with all the quality and performance that you would expect from Flowmaster.

Flow tech headers are the perfect combination of performance and value. Flow tech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 3/8″ flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance.

Product Features:

• Tuned-length primary tubes for better performance
• Mandrel-bent tubing for smooth exhaust flow
• Light weight & sturdy 16 gauge tubing
• Mandrel-formed Power Plenum collector for low back pressure
• Sturdy, leak-tested O-Ring port seals
• Engineered for a precision fit
• Designed for easy, trouble-free installation
• Includes all mounting hardware and premium gaskets
• Works with factory power steering and power brakes

Flow tech headers are the perfect combination of performance and value. Flow tech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 3/8″ flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat and corrosion resistant metallic ceramic thermal coating that increases exhaust velocity and reduces under hood temps for increased performance.

Product Features:

• Tuned-length primary tubes for better performance
• Mandrel-bent tubing for smooth exhaust flow
• Light weight & sturdy 16 gauge tubing
• Mandrel-formed Power Plenum collector for low back pressure
• Sturdy, leak-tested O-Ring port seals
• Engineered for a precision fit
• Designed for easy, trouble-free installation
• Includes all mounting hardware and premium gaskets
• Works with factory power steering and power brakes

The MagnaFlow Street Series Crossmember-Back Performance Exhaust System 15894 brings enhanced engine sound and dyno-proven performance to your muscle car with a healthy helping of our deep, resonant signature exhaust note at Moderate exterior and Mild interior sound levels. Thanks to its durable, corrosion resistant stainless steel design, this exhaust system will handle whatever tarmac you decide to leave your mark on. This performance exhaust kit features a crossmember-back layout designed to replace your exhaust system from the crossmember on back. With its fast-flowing, mandrel bent 2.5in. main piping and 2 Straight-Through mufflers ending in a Multiple Exit Options exit with 2.75in. Polished Weld-On Single Wall Turndown Cut Edge tips, your muscle car will be sounding as awesome as it looks. Extensive 3D scanning during development has resulted in a direct-fit design that you can easily install yourself. 15894 is produced using CNC precision robotic manufacturing techniques and is backed by MagnaFlow’s limited lifetime construction warranty.

Product Features:

• Dyno-proven performance
• CNC precision robotic manufacturing techniques
• Durable corrosion-resistant stainless steel construction

This two chamber design incorporates Flowmaster’s patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over Original 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.