Milltek Valved Resonated Cat-Back | Ford Mustang S550/S650 - Polished Tips

SKU: SSXFD434

$3667.96 $3667.96 $2971.04 $2971.04
Milltek valved resonated cat-back exhaust for Ford Mustang S550/S650 2.3L EcoBoost. T304L stainless, hand-finished, OEM fitment. Direct factory bolt-on with engineered tone and dyno gains.

Description

Milltek valved resonated cat-back exhaust system for Ford Mustang 2.3L EcoBoost (S550 and S650 fastback models). Direct factory fitment using OEM hangers and mounting points-no modification required. Engineered to work with the OE GT 5.0 rear diffuser.

Hand-finished T304L stainless steel construction with mandrel-bent piping and CNC-formed polished trim finishes. Features active exhaust valve technology that opens at full throttle to unlock engineered tone character while maintaining refined cruise-speed acoustics. Resonated design optimizes OE resonance points for balanced full-throttle note without excessive drone.

Fitment:

  • Ford Mustang S550 Fastback (2024+) 2.3L EcoBoost
  • Ford Mustang S650 Fastback (2024+) 2.3L EcoBoost
  • Requires OE GT 5.0 rear diffuser for proper fitment

Dyno-proven performance gains paired with refined sound character.

Designed in Tennessee and manufactured in the UK with 40+ years of performance exhaust heritage. Tested on the Tail of the Dragon.

Key Facts

Pipe Diameter 70.00
  0 hours to fit (including removing OE system)
Race Product No
EMarked No

System Fitment List

    • Ford > Mustang > 2.3 EcoBoost (S650 Fastback) > 2024 and Later

Shipping Information

This system ships in 1 box.

Box 1: 60 x 18 x 15 at 61.74lbs