68-73 Corvette 5.7L Cat Back Exhaust Kit

The MagnaFlow 68-73 Corvette 5.7L Cat Back Exhaust Kit is a performance cat-back system engineered specifically for classic C3-generation Corvettes, delivering enhanced exhaust flow while maintaining street compatibility. This kit uses 2.5-inch diameter piping and polished stainless steel construction to provide both visual appeal and corrosion resistance—critical for vehicles that see regular road use or storage in variable climates.

The cat-back configuration bolts directly behind the catalytic converter, allowing the stock emissions component to remain in place while the system optimizes scavenging and backpressure through the collector, pipes, and dual 2.5-inch polished tips. Stainless steel resists rust and discoloration—important for long-term durability on vehicles displayed at shows or driven in coastal environments. The polished finish complements the undercarriage aesthetic and withstands thermal cycling without sacrificing finish integrity the way some ceramic or painted alternatives do.

This exhaust is purpose-built for Corvette enthusiasts who value both performance gains and period-correct authenticity. Whether you own a 1968, 1969, 1970, 1971, 1972, or 1973 model, this system restores or upgrades flow without requiring engine modifications. The 5.7L platform—the iconic big-block displacement of the era—benefits from improved exhaust scavenging, which can translate to modest horsepower gains and a more aggressive engine note. Street Series tuning ensures the system operates cleanly with stock fuel delivery and ignition timing.

Classic Corvette owners often face limited options for quality exhaust replacement. MagnaFlow systems are engineered to OEM fitment standards and hold their finish under continuous heat cycling. This kit is delivered as a complete assembly, simplifying installation for those with mechanical experience or seeking a straightforward shop install.