SRS EXHAUSTS 4-1 HEADER STAINLESS STEEL (CIVIC 01-05 2/3DR)SRS manifold 4 1 stainless steel Civic 01 05 This SRS manifold 4 1 stainless steel is specially designed to get the maximum out of the Civic 1. 4i, 1. 6i and 1. 7i from 2001 2005. 4 1 = More power at high rpm Material: SUS 304 polished stainless steel Including connection lambda probe SRS manifold with original catalyst This SRS manifold can be mounted in combination with the original catalyst. But for maximum performance you also order an SRS cat