Magnaflow 11385 SS Muffler 4x9 Dual Dual 2.25" Universal Fit

Vehicle Fitment

• Universal fit - designed for custom or replacement dual-exit exhaust systems; not vehicle-specific

Features

• 4" x 9" oval straight-through performance muffler body
• 2.25" inlet and 2.25" outlet for dual-dual exhaust systems
• Straight-through perforated core for efficient exhaust flow
• Acoustic packing and stainless mesh for deep, smooth Magnaflow tone
• 100% stainless steel construction resists corrosion and heat
• Reversible/bi-directional design for flexible installation orientation
• Improves flow and reduces backpressure in dual-exhaust applications
• Ideal for performance upgrades or replacing restrictive stock mufflers

Specifications

• Part Number: Magnaflow 11385
• Type: Straight-through performance muffler
• Body Shape: Oval
• Inlet Diameter: 2.25"
• Outlet Diameter: 2.25"
• Body Dimensions: 4" x 9"
• Material: Stainless steel (SS)
• Installation: Universal - weld-on or clamp-on required

Included Components

• 1x Magnaflow 4x9 performance muffler (11385)

Product Description

The Magnaflow 11385 stainless steel performance muffler is a premium universal exhaust component engineered for dual-dual 2.25" exhaust systems and replacement applications. Featuring a 4" x 9" oval body with a straight-through perforated core, this muffler promotes free-flowing exhaust dynamics while delivering Magnaflow's signature deep and smooth tone. Its design helps reduce backpressure compared to many restrictive factory mufflers, supporting improved performance and sound quality on custom or performance builds.

Constructed entirely from durable stainless steel with acoustic packing and stainless mesh, the 11385 resists corrosion and high temperatures for lasting durability. The reversible and bi-directional layout allows flexible installation orientation, making it suitable for various dual-exit exhaust configurations. This universal muffler integrates with 2.25" piping and requires professional installation via welding or clamp-on hardware. Whether you're building a custom dual-exhaust system or upgrading a stock setup, the 11385 offers quality construction, enhanced flow, and a smooth tone performance enthusiasts appreciate.