Milltek Sport Resonated Secondary Catalyst Bypass for the BMW G8X M3 and M4. Manufactured from premium T304L aircraft-grade stainless steel with mandrel-bent pipework for maximum flow and an engineered, refined sound profile.
Key Features: - T304L stainless steel construction - Mandrel-bent pipework for optimal flow - Resonated for a refined tone - Direct fitment to OE downpipes
