Borla S-Type Cat-Back Exhaust System with Polished Tips (140067) - 1999-2004 Ford Mustang GT & Mach 1 4.6L V8
Wake up the high-performance spirit of your muscle car with the high-impact Borla S-Type Cat-Back Exhaust System. Custom-engineered for 1999 to 2004 Ford Mustang GT and 2003 to 2004 Mach 1 models, this premium full-length exhaust upgrade introduces Borla's legendary acoustic profile: the classic S-Type sound level. Formulated explicitly for driving enthusiasts and muscle car purists who crave a highly aggressive, race-inspired exhaust note under acceleration, this system is calibrated to give the 4.6L V8 engine a bold, crisp, and high-impact growl. This configuration delivers a commanding exterior acoustic presence while relying on advanced straight-through internals backed by Borla's official No-Drone Guarantee to keep the cabin completely comfortable and drone-free during highway cruising, daily commuting, or spirited track runs.
The internal engineering of the Borla 140067 targets key factory flow restrictions by incorporating an upgraded high-efficiency performance layout featuring a full dual 2.5-inch main pipe diameter. This system utilizes ultra-smooth mandrel bends and a unique muffler configuration that cancels additional high-frequency sound waves while delivering a massive increase in exhaust flow CFM over the factory system. This dramatic optimization of airflow dynamics maximizes horsepower, throttle response, and torque across the entire powerband, while providing plenty of extra flow capacity for additional aftermarket performance upgrades down the road like intake modifications, tuning, or headers. Built completely from premium-grade, aerospace-quality T-304 austenitic stainless steel, this highly durable cat-back assembly defends permanently against structural degradation, intense heat cycling, and severe corrosion. The spent exhaust gases exit through a distinctive dual split rear configuration featuring a large 4-inch round, rolled angle-cut bright chrome on T-304 stainless steel tip on each tailpipe. Precision CNC-manufactured for an accurate line-to-line bolt-on fitment, this system utilizes all factory mounting positions and is backed by Borla's legendary lifetime Million-Mile Warranty.
Chassis & Configuration Notes: This cat-back system is engineered specifically for the 1999-2004 New Edge Mustang platform equipped with the 4.6L 2-Valve SOHC V8 (GT) or 4.6L 4-Valve DOHC V8 (Mach 1) engines. It is tailored strictly for models utilizing the factory solid live-axle rear suspension architecture. It is fully compatible with both Automatic and Manual transmissions and fits 2-Door Coupe and Convertible Rear-Wheel Drive (RWD) models. It will not fit independent rear suspension (IRS) optioned Mustang SVT Cobra models without custom tailpipe fabrication due to clearance variances around the rear suspension routing.
Features
- Aggressive S-Type Acoustic Profile: Delivers a deep, loud, and pure muscle car roar under load with a highly controlled cabin presence
- High-Flow Dual 2.5-Inch Architecture: Aerospace-grade mandrel-bent performance piping maximizes exhaust gas velocity and clearing capacity
- Wave-Canceling Technology: Advanced muffler internal geometry eliminates high-frequency harshness while maximizing flow CFM
- Optimized for Power Adders: Added flow efficiency maximizes performance gains for other aftermarket enhancements installed down the line
- Borla No-Drone Guarantee: Advanced straight-through and multi-core acoustics ensure an upgraded exterior note with absolute zero cab resonance
- Constructed completely from premium-grade T-304 austenitic stainless steel for permanent structural integrity and ultimate rust resistance
- Classic Polished Styling: Finished with eye-catching dual 4-inch round, rolled angle-cut bright chrome on T-304 stainless steel tips
- Symmetrical Split Rear Exit: Outlets route cleanly to a single cutout on each side of the rear bumper valance for a balanced, high-performance aesthetic
- True Bolt-On Architecture: Precision computer-numerical control (CNC) manufacturing ensures an accurate, line-to-line fitment
- Backed by Borla's unmatched, industry-leading written Million-Mile Warranty
Detailed Vehicle Fitment Breakdown
Compatible Model Years:
This system fits the following individual model years under the specific chassis, body, engine, and drivetrain constraints listed below: 1999, 2000, 2001, 2002, 2003, 2004 Ford Mustang GT & Mach 1 (New Edge SN95 Platform Only).
Ford Mustang GT & Mach 1 Fitment Breakdown (4.6L V8 RWD with Solid Rear Axle):
Fits 2-Door Coupe and Convertible models with Automatic or Manual Transmissions:
- 1999 Ford Mustang GT: 4.6L SOHC 2V V8 RWD (Coupe / Convertible - *With Solid Axle Only*)
- 2000 Ford Mustang GT: 4.6L SOHC 2V V8 RWD (Coupe / Convertible - *With Solid Axle Only*)
- 2001 Ford Mustang GT: 4.6L SOHC 2V V8 RWD (Coupe / Convertible - *With Solid Axle Only*)
- 2002 Ford Mustang GT: 4.6L SOHC 2V V8 RWD (Coupe / Convertible - *With Solid Axle Only*)
- 2003 Ford Mustang GT / Mach 1: 4.6L V8 RWD (GT SOHC 2V / Mach 1 DOHC 4V Coupe & Convertible - *With Solid Axle Only*)
- 2004 Ford Mustang GT / Mach 1: 4.6L V8 RWD (GT SOHC 2V / Mach 1 DOHC 4V Coupe & Convertible - *With Solid Axle Only*)
Important Application & Compatibility Notes:
- **Suspension Requirement:** Designed strictly for models equipped with the standard solid live-axle rear end assembly. Will **NOT** clear the factory Independent Rear Suspension (IRS) found on 1999-2004 SVT Cobra models.
- **Engine Compatibility:** Fits both the single overhead cam 2-valve 4.6L V8 (GT) and the dual overhead cam 4-valve 4.6L V8 (Mach 1) engine bay configurations.
- **Premium Materials:** Built entirely with authentic T-304 stainless steel to deliver superior rust resistance over lower-grade T-400 series choices.
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