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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29
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Description
MagnaFlow Muffler Mag SS 18X5X8 2.5/2.25X2.25The MagnaFlow 5" X 8" Oval Straight Through 12258 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. 25in. diameter inlet outlet Straight Through layout allows you to install it in whatever orientation and configuration
The MagnaFlow 5" X 8" Oval Straight-Through 12258 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 2.5/2.25in. 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 12258's weight-optimized 5x8x18in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 12258 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.User 1
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Excellence
Size: X-Large, Color: Black
Excellent product, definitely will be buying more
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Reviewed in the United States on May 21, 2026
★★★★★ 1
Not black and Runs small
Size: X-Large, Color: Black
I ordered black but it was more like charcoal gray. I ordered a XL and it fit like a Large at best. The fabric was very soft, so that was a positive. Very disappointed in the color and sizing. I reordered a 2XL and it also runs very small. It fit about the same as the XL did. It is a athletic fit. There is barely any size difference between an XL and a 2XL. Highly recommend to not waste your money on this shirt.
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Reviewed in the United States on November 13, 2025
★★★★★ 5
Warm and comfy
Size: X-Large, Color: White
Very soft and warm. Runs small. I’d buy up a size. Washes well
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Reviewed in the United States on March 15, 2026
★★★★★ 5
Confident sweater
Good quality and fit
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Reviewed in the United States on March 2, 2026
★★★★★ 5
Nice
Very nice & flattering.
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Reviewed in the United States on March 1, 2026