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.. 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.. 2020-2024 Chevrolet Silverado 2500/ 3500/ GMC Sierra 2500/ 3500 6.6L V8 (EXCEPT Diesel) Automatic Transmission 2 & 4 Wheel Drive 4 Door Crew Cab With Long Bed (8' 2") 172" Wheelbase Vehicles EXCEPT Vehicles With Dual Rear Wheels.. Adapts Borla(r) 158.9" Wheelbase systems to Crew Cab With Long Bed (8' 2") 172" Wheelbase vehicles. Borla 20-22 Chevrolet/GMC Silverado/Sierra 6.6L T-304 Stainless Steel Extension Pipe - Brushed. 3.5" inlet, 3.5" outlet, 17.5" long. 1) 3.5" clamp included.. See below for additional Product Features & Benefits. EXCEPT vehicles with Dual Rear Wheels. 3.5" inlet, 3.5" outlet, 17.5" long. BORLA Wheelbase Extension Pipe. Wheelbase Extension Pipe. Exhaust Extension Pipe. 1) 3.5" clamp included. EXCEPT Diesel engine. Wheelbase Ext. Pipe

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