Universal 4" Armor Plus High Flow Muffler (M91031)

Fits: Universal 4"

Built for diesel owners who want sound, flow, and durability without compromise, this MBRP XP Series muffler delivers reduced backpressure and a deep, classic diesel tone. Its heavy-duty T409 stainless steel construction is designed to withstand harsh climates, road debris, and long-term abuse while keeping exhaust flow free.

Part Number: M91031

• High-flow exhaust design
• T409 stainless construction
• 4-inch inlet and outlet 
• Aggressive diesel tone
• Long-life packed core
• Corrosion-resistant build
• 30" Overall length
• 24" Body length 
• 6" Body Diameter

• Universal 4-inch inlet and outlet, replaces any 30-inch overall length muffler.