What is the main benefit of a straight-through muffler design?

A straight-through muffler design allows exhaust gases to flow with less restriction compared to chambered mufflers. This generally results in a deeper exhaust tone and can contribute to improved engine performance.

What materials is this MagnaFlow muffler made from?

This muffler is constructed entirely from stainless steel. This material is chosen for its durability and resistance to corrosion, helping to ensure a long service life for the exhaust component.

Can I install this muffler myself?

While the muffler is universal and bi-directional, professional installation is highly recommended. This ensures proper fitment, welding, and integration into your vehicle's existing exhaust system for optimal performance and safety.

1 / 5

Specifications

Brand: Magnaflow
Part #: 11254
UPC: 841380000583

MagnaFlow Muffler Mag SS 18X4X9 2/2 O/C

Name: MagnaFlow Muffler Mag SS 18X4X9 2/2 O/C
Brand: Magnaflow
SKU: magnaflow-magnaflow-muffler-mag-ss-18x4x9-2-2-o-c-t14-241324
Price: 142.76 USD
Availability: BackOrder

$142.76

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

MagnaFlow 11254 Straight-Through Muffler. Features a 100% stainless steel construction for a deep, smooth tone.

Key Features

This product includes one MagnaFlow 11254 straight-through performance muffler.
It has a 2-inch offset/center inlet and outlet.
The muffler body measures 4 inches tall, 9 inches wide, and 18 inches long.
Constructed from 100% stainless steel for durability and corrosion resistance.
Features a straight-through perforated core for improved exhaust flow.
Produces a smooth, deep exhaust tone.

This is a universal muffler and does not have specific vehicle fitment data. Professional installation is highly recommended to confirm compatibility with your vehicle's exhaust system.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

With this MagnaFlow muffler, you get a straight-through performance muffler with a 2-inch offset/center inlet and outlet, and a 4x18x9 inch body. It’s built with 100% stainless steel, designed to give your exhaust a healthy, deep tone and dyno-proven performance. The straight-through design means exhaust gases flow freely through the perforated stainless steel core, which is wrapped in mesh and acoustic fiber fill for sound control.

This muffler is bi-directional, meaning you can install it in whatever orientation works best for your setup. The oval-shaped body has a satin finish, adding a nice touch to your exhaust system's appearance. Because it's made from durable, corrosion-resistant stainless steel, it's built to last. MagnaFlow uses precision robotic manufacturing for these, and they back it with a limited lifetime construction warranty.

While this muffler is designed to fit a wide range of applications, professional installation is highly recommended to ensure it's properly integrated into your exhaust system.