Wheelbase Ext. Pipe 2020-2024 Chev. Silv. 2500/ 3500/ GMC Sierra 2500/ 3500 6.6L V8 (EXCEPT Diesel) AT 2 & 4WD 4 Dr. Crew Cab W/Std. Bed (6' 8") 158.9" WB EXC. Dual Rear Wheels. Add Ext. Pipe 60713 For Crew Cab W/Long Bed (8' 2") 172" WB.

EXCEPT Diesel Engine. EXCEPT Dual Rear Wheels. This 3.5" diameter extension pipe is used to adapt the 158.9" Wheelbase BORLA® systems to vehicles with Crew Cab with Long Bed (8' 2") 172" Wheelbase. Dimensions 3.5" ID inlet, 3.5" OD outlet, 17.5" long. Includes 1) 3.5" 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® 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.