Magnaflow · New
MagnaFlow Muffler Mag SS 22X5X11 2.5/3.50 D/C
MPN 12587 · Store SKU mag12587
Supplier stock checked 11/7/2026, 10:00:22 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The MagnaFlow 5 X 11in. Oval Straight-Through Performance Exhaust Muffler 12587 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 3.5/2.5in. 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 12587s weight-optimized 5x11x22in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 12587 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 Straight-Through Performance Muffler; 3.5/2.5in. Center/Dual; 5x22x11 Body Straight-Through Performance Muffler; 3.5/2.5in. Center/Dual; 5x22x11 Body Straight-Through Performance Muffler; 3.5/2.5in. Center/Dual; 5x22x11 Body MagnaFlow 3.5 in/2.5 in Center/Dual; 5 in x 22 in x 11 in Body Muffler 3.5 in/2.5 in Center/Dual; 5 in x 22 in x 11 in Body Muffler
Manufacturer fitment & guides
Check 12587 against the manufacturer’s application information below.
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