2025-Up Ram 1500 3.0L SST SO Armor Lite 3 inch Cat-back 2.5 Inch Dual Split Rear Exhaust with Polished Tips MBRPGet your Ram 1500 3. 0L SST SO 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, our systems are fully sealed at the seams to help with rust resistance. Aluminized steel is optimal for mild and dry environments. Built to the same standards as our Armor Pro products, our