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The Borla wheelbase extension pipe adapts 147.4" wheelbase Borla cat-back systems to 2019–2025 Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab with standard bed (157" wheelbase), excluding ZR2 and AT4X. The 12" extension has a 3.5" ID inlet and 3.5" OD outlet, includes a 3.5" clamp, and is CNC-manufactured from premium T-304 stainless steel for accurate fit and corrosion resistance, backed by Borla's Million-Mile Warranty.
Borla 19-20 Chevrolet Silverado 1500 / GMC Sierra 1500 6.2L V8 WB Adapter
