Catback Exhaust for Chevrolet Corvette C5 (1997-2004) 5.7L EngineHigh Flow Catback Exhaust for 1997 2004 Chevrolet Corvette (LS1 LS6 C5) What it Does: Replaces the restrictive factory rear exhaust section with a high velocity, mandrel bent 2. 5 inch stainless steel system to reduce backpressure and provide an aggressive, deep V8 tone. The Stock Corvette Exhaust Limitation The OEM C5 Corvette exhaust system was engineered with heavy, multi baffled mufflers designed primarily for maximum sound suppression and cabin