Stainless Long Tube Exhaust Downpipe for Ford Mustang 3.7L

Part Number: 729859403069
Bull Boost Performance
$1,499.95
| /

Increase exhaust flow and unlock the true performance of your Ford Mustang 3.7L Ti-VCT V6 with the STRATEC™ High-Performance Downpipe, engineered to reduce exhaust restriction, improve throttle response, and produce a deeper, more aggressive exhaust note.

Designed as a direct replacement for the factory restrictive catalytic section, this performance downpipe improves exhaust scavenging and flow efficiency, allowing the naturally aspirated 3.7L V6 to breathe more freely throughout the RPM range. Whether paired with a factory exhaust or a complete STRATEC™ cat-back system, this upgrade enhances both sound and performance.

Constructed from premium T304 stainless steel, every STRATEC™ downpipe features precision CNC-machined flanges, mandrel-bent tubing, and hand TIG-welded construction for exceptional durability, corrosion resistance, and OEM-quality fitment.


Configuration Options

200 Cell High-Flow Catalytic

  • High-flow 200-cell performance catalytic converter
  • Improved exhaust flow over factory components
  • Reduced exhaust restriction
  • Cleaner emissions than catless systems
  • Deep, refined V6 exhaust tone

Catless Race Version

  • Maximum exhaust flow
  • Lowest exhaust restriction
  • Increased horsepower potential
  • Aggressive motorsport-inspired exhaust note
  • Intended for off-road or racing use where permitted by law

Material

Premium T304 Stainless Steel

  • Automotive-Grade T304 Stainless Steel
  • Precision CNC-Machined Flanges
  • Mandrel-Bent Tubing
  • Hand TIG-Welded Construction
  • Excellent Heat Resistance
  • Outstanding Corrosion Protection

Premium Features

  • Direct Replacement Performance Downpipe
  • Available in 200 Cell High-Flow or Catless
  • High-Flow Exhaust Design
  • Precision CNC-Machined Flanges
  • Mandrel-Bent Tubing
  • Reduced Exhaust Restriction
  • Improved Exhaust Scavenging
  • Increased Horsepower & Torque Potential
  • Improved Throttle Response
  • Direct Bolt-On Installation
  • OEM-Quality Fitment

Engineering & Design

High-Flow Exhaust Path

Designed to minimize restriction after the exhaust manifolds, improving exhaust gas evacuation for increased engine efficiency and performance.

Smooth Mandrel-Bent Construction

Maintains consistent internal diameter throughout the piping to maximize exhaust velocity while minimizing turbulence.

Precision Manufacturing

Every STRATEC™ downpipe is CNC fabricated and expertly TIG welded to ensure outstanding fitment, strength, and long-term reliability.


Package Includes

  • Left Performance Downpipe
  • Right Performance Downpipe
  • Installation Hardware
  • Gaskets (Where Applicable)

Catless Version Includes:

  • O₂ Sensor Spacer(s)

Performance Benefits

  • Increased Exhaust Flow
  • Reduced Exhaust Backpressure
  • Improved Throttle Response
  • Increased Horsepower & Torque Potential
  • Enhanced Mid-Range & Top-End Performance
  • More Aggressive V6 Exhaust Note
  • Optimized for Naturally Aspirated Performance Builds

Vehicle Fitment

Ford Mustang V6

  • 2011-2014 – 3.7L Ti-VCT V6 (S197)
  • 2015-2017 – 3.7L Ti-VCT V6 (S550)

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