Borla 19-20 GM Silverado/Sierra 1500 Crew Cab STD Bed 5.3L Wheelbase Adapter Pipe Suspension>Steering Dampers Replace the small muffler behind

Replace the small muffler behind the primary muffler in the BORLA® S-Type system with Polyphonic Harmonizer 60680 to attain the ATAK® sound level (louder than S-Type)

Bolt on instant performance by upgrading or replacing your restrictive

With these 30 levels

and it's just not loud enough for you

They're also double walled to ensure a mirror finish - even under hard usage

Borla 19-20 GM Silverado/Sierra 1500 Crew Cab STD Bed 5.3L Wheelbase Adapter Pipe Suspension>Steering Dampers Replace the small muffler behindThis extension pipe is used to adapt the 147. 4" Wheelbase BORLA(r) systems to vehicles with Crew Cab with Standard Bed (6' 7") 157" wheelbase. 3" ID inlet, 3" OD outlet, 12" long. Includes 1) 3" Clamp. Built from premium, high quality austenitic T 304 stainless steel, to give you the absolute best in performance and durability. Precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, BORLA(r) stands behind every