1998 GMC SIERRA 5.7 TRUE DUAL STREET DEMON PERFORMANCE EXHAUST SYSTEM

98 GMC Sierra 5.7 has our unique and exclusive Street Demon Performance Exhaust System. From the cats back we went true dual into our forged x pipe out from there we went into our Exclusive Street Demon Mufflers. These systems offer a deep throaty tone with no interior drone and offer 18 hp and 1.5 mpg.