This extension pipe is used to adapt the 158.9" Wheelbase BORLA(r) systems to vehicles with Crew Cab with Long Bed (8' 2") 172" Wheelbase. 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 extension pipe with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. Wheelbase Extenstion Pipe 2020-2022 Chev. Silv. 2500/ 3500/ GMC Sierra 2500/ 3500 6.6L V8 AT 2 & 4WD 4 Dr. Crew Cab W/Std. Bed (6' 8") 158.9" WB EXC. Veh. W/Dual Rear Wheels. Add Ext. Pipe 60713 For Crew Cab W/Long Bed (8' 2") 172" WB Veh. 2020-2022 Chevrolet Silverado 2500/ 3500/ GMC Sierra 2500/ 3500 6.6L V8 Automatic Transmission 2 & 4 Wheel Drive 4 Door Crew Cab With Long Bed (8' 2") 172" Wheelbase Vehicles EXCEPT Vehicles With Dual Rear Wheels.
