Stainless Works 1990-95 Corvette ZR1 3in Exhaust X-Pipe S-Tube Mufflers Polished Tips1990 95 ZR1 3" aggressive sounding exhaust system to fit Stainless Works full length headers. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. Includes X Pipe, S Tube Turbo mufflers, polished tips, hangers and clamps. Fits Stainless Works headers (P N ZR1CORVCAT ZR1CORVOR). These are TIG welded for strength and durability. These kits come with a lifetime warranty and proudly made in the