True dual Flowmaster 40 series
01 chevy silverado Z71 with true dual 2.25 40 series flowmasters with an H-pipe
GMC Sierra Flowmaster Super 10 vs Stock
My truck got a new muffler on er
2012 GMC Sierra Before&After Exhaust. (FLOWMASTER SUPER 10)
The truck has the 5.3 v8, 3inch in, 2 and a 1/2 inch out, 3 and a 1/2 inch rolled tips.