11366 Oval Straight-Through Performance Exhaust Muffler
InfoVehicle Info Needed
MAGNAFLOWPART NUMBER: 642-11366

11366 Oval Straight-Through Performance Exhaust Muffler

$11070
More than 10 available
ShippingShips on Sep 08, 2026
Lowest PriceLowest Price Guarantee


Offset In / Center Out
Straight-Through Performance Muffler
  • 2.5 in. Offset/Center
  • 4x11x9 in. Body
  • Stainless Steel

    The MagnaFlow 4 X 9in. Oval Straight-Through Performance Exhaust Muffler 11366 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno-proven performance thanks to its free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 2.5/2.5in. diameter inlet/outlet Straight-Through layout allows you to install it in whatever orientation and configuration you see fit. However, professional installation is highly recommended. Muffler 11366s weight-optimized 4x9x11in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 11366 is made of durable, corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques, all backed by MagnaFlow's limited lifetime construction warranty.

    Magnaflow 11366 Oval Straight-Through Performance Exhaust Muffler Features:

    • Delivers a Smooth, Deep Tone
    • Mufflers are Bi-Directional
    • 100% Stainless Steel
  • Part TypeMuffler
    BrandMAGNAFLOW
    Package Height4.6
    Package Width9.6
    Package Length21.2
    Weight8.5 PG
    Part CategoryPerformance Parts
    Outlet QuantityOne
    Inlet LocationOffset
    Inlet PositionFront
    Inlet TypeSingle Offset Inlet
    Inlet Size (In.)2.5
    Outlet StyleStandard, without tip
    Muffler FinishNatural
    Body Length11 in (279.4 mm)
    Muffler Count1
    Inlet Diameter2.5 in (63.5 mm)
    Inlet QuantityOne
    Muffler MaterialStainless steel
    Outlet Size2.5 in (63.5 mm)
    PositionN/A
    Inlet Connection TypePipe Connection
    Outlet Diameter2.5 in (63.5 mm)
    QuantitySold individually
    Overall Length17 in (431.8 mm)
    Material409 Stainless Steel
    Case Length11 in (279.4 mm)
    Internal ConstructionPerforated stainless tube with packing
    Case ShapeOval
    Body Width9 in (228.6 mm)
    Muffler ConfigurationCenter/Offset
    Outlet LocationCenter
    Body Height4 in (101.6 mm)
    Outlet TypeSingle Center Outlet
    Part FitmentUniversal
    Outlet PositionRear
    Vendor Part Number11366
    Package Qty1
    Package TypeEA
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    Some parts are not legal for use in California or other states with similar laws / regulations
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