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EXCEPT ZR2 & AT4X models. This extension pipe is used to adapt the BORLA 147.4" Wheelbase Cat-Back systems to fit Crew Cab with Standard Bed (6' 7") 157" Wheelbase vehicles. 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 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.
Installation Instructions


This Part Fits:

Year Make Model Submodel
2019-2020 Chevrolet Silverado 1500 Custom
2020-2021,2023 Chevrolet Silverado 1500 Custom Trail Boss
2019-2023 Chevrolet Silverado 1500 High Country
2019-2020 Chevrolet Silverado 1500 LT
2020-2023 Chevrolet Silverado 1500 LT Trail Boss
2019-2023 Chevrolet Silverado 1500 LTZ
2020-2023 Chevrolet Silverado 1500 RST
2019-2020 Chevrolet Silverado 1500 SSV
2019-2020 Chevrolet Silverado 1500 WT
2022-2023 Chevrolet Silverado 1500 ZR2
2022 Chevrolet Silverado 1500 LTD Custom Trail Boss
2022 Chevrolet Silverado 1500 LTD High Country
2022 Chevrolet Silverado 1500 LTD LT Trail Boss
2022 Chevrolet Silverado 1500 LTD LTZ
2022 Chevrolet Silverado 1500 LTD RST
2019-2023 GMC Sierra 1500 Denali
2019-2023 GMC Sierra 1500 SLT
2022 GMC Sierra 1500 Limited Denali
2022 GMC Sierra 1500 Limited SLT

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