SRS EXHAUST SYSTEMS 4-1 EXHAUST HEADER STAINLESS STEEL (HONDA B-ENGINES 91-02)SRS manifold 4 1 stainless steel B series Civic, CRX Integra The SRS manifold 4 1 stainless steel is specially made for the B series engines in the Honda Civic, CRX and Integra. 4 1 = Maximum power at high rpm Including connection lambda probe This SRS manifold has been developed for maximum power gain at high rpm. Give your V tec area an extra boost with this manifold! With a 4 1 SRS manifold the stainless steel tubes go from 4 to 1 tube. This design