• Stepped headers merge into a true reverse-cone megaphone muffler
• 1-3/4″ headpipe steps up to 1-7/8″ into the collector to increase flow and improve performance
• 4″ muffler body with billet end cap
• Removable spiral-core louvered baffle included
• Mounting hardware included
• 12″ muffler length
• Heat shields included
• Made in the U.S.A.

• Designed specifically to address the needs of tuned motors built for high horsepower applications
• Use a unique extended inner collector maximizing performance
• 4″ straight-style performance muffler body with 2-1/2″ x 16-1/2″ baffle and black billet end cap with  contrasting machined flutes
• Oxygen sensor port plugs also included for non-sensor applications
• Made in the U.S.A.

• Designed specifically to address the needs of tuned motors built for high horsepower applications
• Use a unique extended inner collector maximizing performance
• 4″ straight-style performance muffler body with 2-1/2″ x 16-1/2″ baffle and black billet end cap with  contrasting machined flutes
• Oxygen sensor port plugs also included for non-sensor applications
• Made in the U.S.A.

• 16-gauge steel construction and removable flow-through baffles
• Bolt to stock locations with supplied hardware
• Made in the U.S.A.