MagnaFlow Muffler Mag SS 22X5X11 3 C/C Drivetrain>Differential Bushings while the Wide-40 beam offers

while the Wide-40 beam offers a wider area of coverage

313 Valve -3x -8 / 1x -10 Inlet -10 Return

bypass with matching spring and poppet

75" to 1" Diameters

90 degree SpreadOffering an efficient high-output to draw

MagnaFlow Muffler Mag SS 22X5X11 3 C/C Drivetrain>Differential Bushings while the Wide-40 beam offersThe MagnaFlow 5" X 11" Oval Straight Through 12579 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno proven performance thanks to its free flowing straight through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 3 3in. diameter inlet outlet Straight Through layout allows you to install it in whatever orientation and configuration you see