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Magnaflow

MagnaFlow 99-04 Mustang Mach 1 V8 4.6L Dual Split Rear Exit Stainless Cat-Back Performance Exhaust

$1,585.75 $1,122.00 Save $463.75

SKU: M001 16394

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The MagnaFlow 16394 Competition Series Cat-Back Performance Exhaust System delivers an aggressive, motorsport-inspired sound with dyno-proven performance gains. This direct-fit system features fast-flowing mandrel-bent 3-inch main piping and two straight-through mufflers, ending in a dual-split rear exit with 3-inch polished, clamp-on, single-wall, angle-cut tips. It's constructed from 100% durable, corrosion-resistant stainless steel using CNC precision robotic technology, backed by MagnaFlow's limited lifetime warranty.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMagnaflow
Part NumberM001 16394

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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