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The Milltek Secondary Catalyst Bypass is designed to replace the factory secondary catalytic converters, allowing for improved exhaust flow and a deeper, sportier sound. Made from high-grade 304L stainless steel, it ensures maximum durability and heat resistance. This upgrade reduces back pressure, enhancing throttle response and engine performance. Intended for off-road or track use only, as it removes emission control components. Specifications - Pipe diameter (inches): 3.15 - Feature 1: Fits to OE Downpipes & Milltek Sport Axle Back System Only - Feature 2: OE requires cutting







