Flowmaster American Thunder Cat-Back, black ceramic tips (incl. PowerBoost)
Fits 2021-2026 2.7L EcoBoost · 3.5L EcoBoost
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Price tracked 13 times since Jul 12, 2026 across the stores we check daily: low $1,049.95, high $1,049.95, currently $1,049.95.
Same American Thunder build with black ceramic dual 4.5-inch tips, rear exit only - this is the only Flowmaster cat-back that fits the PowerBoost hybrid.
why this one — Flowmaster claims up to 18 hp and 14 lb-ft on their own dyno, and it's the only Flowmaster option that fits PowerBoost trucks - no independent dyno confirms the number.
Flowmaster's own product page: "Maximum increases on the dyno revealed 18 hp and 14 lb-ft at the rear wheels." Self-reported by manufacturer, no independent dyno sheet linked. Source: flowmastermufflers.com/products/exhaust/exhaust_systems/cat-back/parts/818169.
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