Labour Day Sale. 10% off select brands, an extra 20% off Clearance, up to $250 off MBRP truck exhaust. Shop the sale
Labour Day Sale, ends Tuesday. Shop the deals
Tariff drama? Not here. Every order ships with zero surprise fees.
Tariff drama? Not here. Every order ships with zero surprise fees.


SKU: SKU: RSH422093-BLK
Give your 2018-2026 Mustang GT the aggressive, race-ready sound it deserves with the Roush Performance Cat-Back Exhaust System. Designed specifically for 5.0L V8-equipped models, this system delivers a deep, throaty rumble at idle and a fierce, high-performance tone under acceleration—turning every drive into a statement.
Unlike stock systems that restrict sound and flow, the Roush Cat-Back system is engineered for maximum performance and an exhilarating acoustic experience. With a straight-through muffler design and mandrel-bent 304 stainless steel tubing, this exhaust enhances horsepower and torque while maintaining a refined tone during cruising.
This kit features quad 4-inch exhaust tips finished in a sleek black coating, delivering an aggressive look that perfectly complements your Mustang’s rear fascia. Each tip is etched with the iconic Roush “R” logo for a signature touch of performance. This system is compatible with factory valance designs that accommodate quad tips but is non-active, offering a consistently bold sound profile without the need for valve integration.
Like all Roush Performance products, this cat-back exhaust system is rigorously tested and validated to meet the highest standards of fitment, durability, and performance. CAD-engineered for a direct bolt-on installation, it includes everything needed for a hassle-free upgrade—no cutting or welding required.
Constructed from corrosion-resistant T304 stainless steel, this system is built to withstand the elements and deliver long-lasting performance. Whether you’re carving corners or cruising the freeway, the Roush Cat-Back delivers unmatched sound and quality backed by Roush’s Limited Lifetime Warranty.
Fits 2018-2026 Mustang GT 5.0L V8 (Non-Active Exhaust)
Cat-Back configuration with full mandrel-bent T304 stainless steel tubing
Quad 4” black-coated tips with etched Roush “R” logo
Distinct Roush tone: deep at idle, aggressive at WOT
Includes all required hardware for bolt-on installation
No calibration or tuning required
Designed and built in the USA
Backed by Roush’s Limited Lifetime Warranty
Free Canadian Shipping on Orders $399+*
No Duties or Brokerage Fees in Canada
500K+ Parts from 400+ Trusted Brands
