MagnaFlow 4吋 x 14吋 圓形直通式性能排氣消音器 10416

The 4x4x14 size fit my tight exhaust tunnel way better than the bulky stock can, and the straight-through design woke up a deep tone I wasn't expecting from something this compact. Bolted it on in an afternoon and the weight savings alone made it worth it.

Swapped this straight-through muffler onto my truck and the sound instantly went from quiet stock to a deep, throaty rumble without droning on the highway. The 4x4x14 size tucked in nicely under the bed with room to spare.

The sound is deep without being obnoxious, and the straight-through design gives it that classic rumble I was after. Install was straightforward, though the 4-inch case is a bit chunky if your undercarriage is tight.