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Borla 11-12 Ford Mustang GT 5.0L 8cyl 6spd RWD S-Type Exhaust (rear section only)-Borla-BOR11789
Borla 11-12 Ford Mustang GT 5.0L 8cyl 6spd RWD S-Type Exhaust (rear section only)-Borla-BOR11789
Borla 11-12 Ford Mustang GT 5.0L 8cyl 6spd RWD S-Type Exhaust (rear section only)-Borla-BOR11789
Borla 11-12 Ford Mustang GT 5.0L 8cyl 6spd RWD S-Type Exhaust (rear section only)-Borla-BOR11789
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Borla 11-12 Ford Mustang GT 5.0L 8cyl 6spd RWD S-Type Exhaust (rear section only)

Borla
BOR11789
808422117890
Axle Back
7 Units In Stock - Ships Next Business Day
$ 1,377.99 $ 1,229.99
FREE Ground Shipping!
$ 1,229.99

SKU: 11789   |   UPC: 808422117890

Borla 2011-2012 Ford Mustang GT/ Boss 302 Axle-Back Exhaust System S-Type

Transform your 2011-2012 Ford Mustang GT or 2012 Boss 302 with the Borla 11789 S-Type axle-back exhaust system, designed exclusively for the 5.0L V8 in coupe or convertible models with automatic or manual transmission. This rear-section-only upgrade delivers increased horsepower and torque through patented straight-through technology, sharper throttle response, and the signature Borla Sound of Power that turns heads. Experience enhanced fuel efficiency and engine longevity with every drive.

Key Features

  • T-304 Stainless Steel Construction: Premium material resists corrosion for lasting durability and maintains peak performance over time.
  • Straight-Through Muffler Design: Patented multi-core technology increases exhaust velocity for added power and the aggressive Borla exhaust note.
  • 2.75-Inch Tubing with 4-Inch Tips: Mandrel-bent pipes and bright chrome T-304 tips ensure smooth flow, precise fit, and motorsport styling.
  • Split Rear Exit Configuration: Dual 4-inch angled cut tips provide balanced exhaust flow and a custom look from factory hangers.
  • Million-Mile Warranty: Backed by Borla's unmatched guarantee, reflecting confidence in quality and craftsmanship.

Product Notes

  • Direct bolt-on replacement using factory mounts; no cutting or welding required.
  • Produces a deep, aggressive tone without drone on highway drives.
  • Ships fully assembled in protective packaging to prevent damage.

Installation Notes

  • Professional installation recommended.
  • Bolt-on design fits in under 30 minutes with basic hand tools; remove stock axle-back section first.
  • Compatible with all factory hangers and catalytic converters; no modifications needed.

This Part Fits

Year Make Model Submodel
2011 Ford Mustang GT
2012 Ford Mustang GT
2012 Ford Mustang Boss 302

Why Choose Borla?

  • Over 40 years as the leader in stainless steel exhaust systems for street and racing.
  • Every system hand-welded and CNC-machined for exact fit and maximum flow.
  • Proven on track with dyno-tested gains in power and efficiency.

Frequently Asked Questions

  • Q: Will this fit both coupe and convertible Mustang GT models?
    A: Yes, the 11789 S-Type axle-back fits 2011-2012 Mustang GT coupe/convertible and 2012 Boss 302 with 5.0L V8, automatic or manual transmission.
  • Q: What material are the tips made from?
    A: 4-inch double-wall tips are bright chrome over T-304 stainless steel for shine and rust resistance.
  • Q: What warranty comes with this exhaust?
    A: Million-Mile Warranty covers defects in materials and workmanship when installed properly.

Shipping & Handling

  • Method: Ground shipping via UPS or FedEx
  • Availability: In stock - ships same or next business day
  • Packaging: Single oversized box, 48" L x 14" W x 14" H
  • Weight: 28 lbs
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