This extension pipe is used to adapt the Borla(r) 147.4" Wheelbase Cat-Back(tm) systems to fit Crew Cab with Standard Bed (6' 7") 157" Wheelbase vehicles. The extension pipe dimensions are 3.5" ID inlet, 3.5" 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 extension pipe with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.Wheelbase Extension PipeSpecifications: Description_ASM 2019-2025 Chevrolet Silverado 1500/ GMC Sierra 1500 Extension Pipe Description_DEF Exhaust Pipe Adapter Description_DES Wheelbase Extension Pipe Description_EXT Wheelbase Extension Pipe 2019-2025 Chevrolet Silverado 1500/ GMC Sierra 1500 (EXCEPT ZR2 & AT4X) 6.2L V8 Automatic/ Manual Transmission Crew Cab With Standard Bed (6' 7") 157" Wheelbase. Description_FAB EXCEPT ZR2 & AT4X models Description_FAB Adapts Borla(r) 147.4" Wheelbase systems to Crew Cab with Standard Bed (6' 7") 157" Wheelbase vehicles Description_FAB 3.5" ID inlet, 3.5" OD outlet, 12" long Description_FAB 1) 3.5" clamp included Description_INV BORLA Wheelbase Extension Pipe Description_MKT This extension pipe is used to adapt the Borla(r) 147.4" Wheelbase Cat-Back(tm) systems to fit Crew Cab with Standard Bed (6' 7") 157" Wheelbase vehicles. The extension pipe dimensions are 3.5" ID inlet, 3.5" 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 extension pipe with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. Description_SHO Extension Pipe Grade Type Performance Title 2019-2024 Chevrolet Silverado 1500/ GMC Sierra 1500 Extension Pipe Prop 65 Yes/No Yes Prop 65 (C, R or CR) CR Prop 65 - Short Label WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov Prop 65 - Long Label WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go towww.P65Warnings.ca.gov Prop 65 Warning Label Proposition 65 Warning.JPG