4IN SIDETUBE SLIPIN GLASS MUFFLERS 2 P

These Hooker 4 inch sidetube slip-in mufflers are engineered specifically for 1963-1974 Corvettes with 4 inch sidepipes. The mufflers are easily removed, and feature a performance-style glasspack core. They produce an average of 23 percent more power than open headers, and feature a high-flow, perforated core that operates at 99 percent efficiency. High-temperature packing material absorbs noise while producing a powerful, mellow sound. The outer case is constructed of durable 16-gauge aluminized steel and protected by electrostatically applied high-temperature black paint. The inlet and outlet are 2 inch perforated cores in a 4 inch casing.