Roush Active Exhaust Upgrade Kit ('15-'17 Mustang GT, EcoBoost)
$1,899.99
Model Number: 421926
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Converts Roush passive exhaust to active exhaust
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Select between touring, sport, track, and custom exhaust notes
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Custom programming with included Wi-Fi OBD2 interface and Roush iOS app
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Compatible with Roush part nos. 421920, 421921, 421922, 421923
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Fits 2015-2018 GT and EcoBoost Mustangs equipped with a Roush Passive Quad-Tip Axle-Back