2019-Present Silverado/Sierra 1500 2.7L Aluminized Steel 3 Inch Cat-Back Single Side Exit Armor Lite MBRPGet your 2019 up Chevrolet GMC 1500 Silverado Sierra 2. 7L an MBRP Cat Back Exhaust System. MBRP's Cat Back exhaust systems have multiple benefits, here is why you should consider upgrading your OEM exhaust system for one of ours: Durability: Constructed from heavy gauged aluminized steel with fully sealed seams for rust resistance, our Armor Lite series products are a great option for mild environments or those looking for quality on a budget. The