Cat-Back Exhaust

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

Brand: Milltek

Part #: SSXFD434

$3,667.96+3667 pts

In Stock

SKU: MK-SSXFD434

Ships direct from the warehouse Guaranteed fitment 30-day returns

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.