Unlock the full soundtrack and performance potential of your 5.0 V8 Mustang GT with the Xforce VAREX 3″ Cat-Back Exhaust System. Designed specifically for the 2015–2017 S550 fastback, this premium 304-grade stainless steel system delivers sharper throttle response, improved flow and a proper V8 tone that brings the Coyote engine to life.
Valved Exhaust – Control Your Sound Anytime
At the heart of this system are Xforce’s VAREX valved mufflers. These electronically controlled valves allow you to switch between quiet, refined operation and a deep, aggressive V8 roar whenever you want.
- Valves Closed: Neighbour-friendly, near-OEM volume for early starts and long journeys.
- Valves Open: Straight-through flow and a proper Mustang soundtrack with real presence.
- Optional SmartBox: Add Bluetooth control, automatic valve maps, geo-fencing and preset profiles for the ultimate flexibility.
It’s the best of both worlds – loud when you want it, subtle when you need it.
Key Features
- Twin 3″ cat-back system
- TIG-welded 304 stainless steel construction
- Oval centre resonator for smoother tone and reduced drone
- VAREX valve-controlled mufflers with remote control
- Straight-through design for maximum power and flow
- Dual 4″ double-wall, slant-cut polished stainless tips
- Includes all necessary gaskets, nuts and bolts
- SmartBox compatible for advanced valve control
- Note: Not suitable for convertible Mustangs
Technical Specifications
- Diameter: 3″
- Material: Stainless Steel (304)
- Product Type: Cat-Back System
- Weight: 38 kg
- Box Dimensions:
- Box 1: 115 × 41 × 28 cm
- Box 2: 67 × 59 × 26 cm
- Tech Sheet: VAREX Wiring Install Guide
Options:
- Carbon Tips (ES-FM15-CFTIPS)
- Black Slash Cut Tips (ES-FM15-BTIPS)
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