SRS EXHAUSTS CATALYTIC CONVERTER/TEST PIPE (CIVIC 87-91/CRX 87-93)SRS cat replacement test pipe stainless steel for Civic, CRX and Shuttle models '88 '91 This SRS cat replacement test pipe stainless steel removes the resistance caused by the original catalyst from your outlet. SRS has specially developed this cat replacement test pipe for the Civic, Crx and Shuttle models from year 1988 to 1991. Give your motorcycle the space to perform optimally with this test pipe. This exhaust part is a straight tube, made of