A1 Muffler and header

1 5/8 no heater A-1's Competition Sidewinder Muffler uses A-1's exclusive 'magna flo' muffler design built to A1's specifications. Note the muffler end cap are located on the same end cap for the most versitile fitment. This design allows a clean and even exhaust note while achieving a noise level under 90 decibels (sound levels may vary due to engine horsepower). Furthermore, these mufflers have A-1s "Venturi Power Cone", that was pioneered by A-1 over 20 years ago.fits bug all ghia all and bus-67 - 2" quietest