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Some vehicles are equipped with two catalysts due to their dual pipe assembly. The Secondary Catalyst Bypass pipe removes the secondary catalyst to further improve gas flow and reduce restrictions caused by catalysts within the exhaust system. - Removes the secondary catalyst for improved gas flow - Reduces restrictions in the exhaust system - Designed for vehicles with dual pipe assemblies Specifications: - Pipe Diameter: 76.20 - Race Product: Yes - EMarked: No Vehicle Compatibility: - 2014-2018 BMW 3 Series F80 M3 & M3 Competition Saloon (Non OPF/GPF Models Only) - 2014-2018 BMW 4 Series F82/83 M4 Coupe/Convertible & M4 Competition Coupe (Non-OPF equipped models only)







