Roush Axle-Back Exhaust – 2011–2014 Ford Mustang V6 (S197) | 3.7L Cyclone V6 | Black Tips

Give your 2011–2014 Ford Mustang V6 a dramatically improved exhaust note with the Roush Axle-Back Exhaust — engineered by Roush Performance, Ford's official performance partner, specifically for the S197 Mustang V6's 3.7L Cyclone V6. Roush exhausts are developed alongside Ford engineers to deliver a signature, aggressive exhaust character that transforms the V6 Mustang's sound profile — a deep, throaty note under acceleration that remains refined at idle and cruise. The black tip finish adds a purposeful, blacked-out aesthetic to the Mustang's rear end. Axle-back installation means no tune is required — a straightforward bolt-on upgrade that transforms the V6 GT's exhaust note without touching the front of the exhaust system.

⚠️ V6 Specific – Not Compatible with Mustang GT (5.0L): This exhaust is engineered specifically for the 2011–2014 Mustang V6 (3.7L Cyclone). It is NOT compatible with the Mustang GT (5.0L Coyote V8) — the V6 and GT have different exhaust routing and pipe configurations. For the GT, see part 421127-BLK.

Key Features

• Roush Signature Exhaust Note – V6 Tuned: Engineered by Roush Performance — Ford's official performance partner — to deliver a signature aggressive exhaust character tuned specifically for the 3.7L Cyclone V6. Transforms the V6 Mustang's exhaust note into something worthy of the Mustang nameplate
• Black Tips – Blacked-Out Aesthetic: Black exhaust tips deliver a purposeful, blacked-out appearance at the Mustang's rear end — a clean, aggressive visual upgrade
• Axle-Back Design – No Tune Required: Axle-back installation replaces only the exhaust from the rear axle back — no modifications to the catalytic converters or mid-pipe. No tune required for installation
• Direct OEM Fitment: Engineered specifically for the 2011–2014 Ford Mustang V6 (S197) — direct bolt-on replacement using OEM mounting points for a clean, factory-integrated installation
• Roush Performance Quality: Manufactured by Roush Performance — Ford's official performance partner with decades of Mustang-specific engineering expertise and motorsport heritage

Specifications

• Type: Axle-Back Exhaust
• Tip Finish: Black
• Tune Required: No
• Engine: 3.7L Cyclone V6
• Fitment: 2011–2014 Ford Mustang V6 (S197) — V6 Only
• Part Number: 421145-BLK

Note: V6 fitment only — not compatible with the Mustang GT (5.0L) or Boss 302. For the GT axle-back, see Roush part 421127-BLK. Professional installation recommended for proper fitment and alignment of exhaust tips.