Yes, these are Magnaflow 4" stainless resonators (what Magnaflow called them on the box) also the same as race mufflers really since the diameter is smaller than 6". I much prefer them to the size of the FI cans from the rear view, although FI is not really bad looking to start with.
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2013 Ford Mustang GT
374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd
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