Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
No guide available for this part yet.
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Milltek Active Valve Cat-Back Exhaust System with X-Pipe and Brushed Titanium Tips (21-26 Mustang Dark Horse, Mach 1)Find parts that fit my vehicle
Item 438231
Our Price
$3,743.00 set
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$187.15 Available in AM Cash Rewards.
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Product Information
Features, Description, Q&A, Specs & Installation
Features & Specs
- Active Valved Cat-Back Exhaust System Featuring X-Pipe
- Designed as a Direct Replacement for the Original System
- Improves Sound and Aesthetics with Multiple Configurations
- Enables Choice of Increased Volume and Aggressive Tone
- Manufactured from 304L Aircraft Grade Stainless Steel
- Requires OE GT 5.0 Rear Diffuser for Proper Fitment
- Pipe Diameter 70.00 mm
- Installation Time Between 1 to 2 Hours, Including Removal of OE System
- Not a Race Product
- Not E-Mark Certified
- Fits 2021-2023 Mustang Mach 1 and 2024-2026 Mustang Dark Horse
| Brand | Milltek |
| Exhaust System Type | Cat-Back System |
| Exhaust System Material | Stainless Steel |
| Exhaust System Tip Finish | Brushed |
| Exhaust System Tubing Diameter | 3.00 Inch |
| Exhaust Loudness | Aggressive |
Description
Performance Exhaust Upgrade. The Milltek Active Valve Cat-Back Exhaust System with X-Pipe and Brushed Titanium Tips enhances the auditory and visual appeal of the Ford Mustang 5.0 V8 Dark Horse and Mach 1 models. Designed as a direct replacement for the original exhaust system, it provides tailored configurations to increase exhaust volume and deliver a more aggressive sound profile suited to enthusiast preferences.
Construction and Appearance. This exhaust system is constructed from durable 304L Aircraft Grade stainless steel, ensuring longevity and resistance to harsh environmental conditions. It features a sleek brushed titanium finish on the exhaust tips, combining high-quality materials with an appealing textured metallic look.
Installation. Installation typically requires one to two hours and involves removing the original equipment exhaust system. No drilling or extensive modifications are necessary, making it a straightforward upgrade.
Application. Specifically designed to fit Ford Mustang 5.0 V8 Mach 1 (Fastback S550) models from 2021 to 2023, and Dark Horse (S650 Fastback) models from 2024 to 2026, requiring the OE GT 5.0 rear diffuser for correct fitment.
Milltek SSXFD418
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Cat-Back Exhaust System
- (1) X-Pipe Assembly
- (4) Brushed Titanium Exhaust Tips
- (1) Installation Hardware Kit
Tech Guides:
- What Are the Best Mustang Exhaust Systems for Sound and Performance?
- Which Ford Mustang Axle-Back Exhaust Fits Your Sound Profile?
- What You Need To Upgrade Your Mustang Exhaust System
- What are the Benefits of Aftermarket Exhaust Systems
- Cat-Back vs Axle-Back Exhaust
- Does Upgrading an Exhaust Increase Horsepower?
- Best Axle-Back Exhaust for Your Ford Mustang
- What Is Active Exhaust? Benefits, Modes & Upgrade Guide
- How to Improve Your Car's Exhaust Sound
- What is the Best Metal for Aftermarket Exhaust Systems
- Corsa Extreme vs. Borla Atak for Mustang
- Do Exhaust Systems Affect Fuel Efficiency?
- The Best Exhaust Systems for Maximum Horsepower Gains
- Top 5 Loudest Exhaust Systems for Your Mustang
- What are the Performance Benefits of Upgrading to a Cat-Back Exhaust
- 2024 Mustang Exhaust Guide
Questions & Answers
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Will It Fit My Mustang
- Dark Horse - 24, 25, 26
- Mach 1 - 21, 22, 23
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