MagnaFlow 2007 Hummer H2 6.0L / 2008 Hummer H2 6.2L Street系列 觸媒後性能排氣系統 16772

Bolted it on in the driveway in about an hour and the difference in sound is immediate—no more of that stock muffled whisper. The 4-inch polished tip fills the rear cutout perfectly and the tone really wakes up the 6.2L without being obnoxious on the highway.

The deep, throaty rumble at startup completely changed how the Hummer feels, and I noticed a solid boost in mid-range throttle response. Even the welds on the 16772 model look cleaner than I expected for the price.

Took it for a drive after installing and the low-end torque feels noticeably stronger off the line. The stainless steel construction should hold up well through winters here. Exactly the sound I wanted without being obnoxious on the highway.