This cast 5-inch downpipe is engineered to deliver optimized exhaust flow and performance gains for turbocharged engines. Featuring a high-flow 200-cell motorsport-grade catalytic converter, it significantly reduces backpressure while maintaining emissions control in performance-oriented applications. The cast construction ensures smooth internal transitions and enhanced durability under high thermal loads, making it ideal for track and street use where maximum flow and reliability are required. Specifications - Diameter: 5 inches - Catalyst Type: 200-cell high-flow metallic - Material: Cast stainless steel - Robust design for sustained use under high-performance conditions