ATI

The Duramax trucks are more than capable of making seriously huge power numbers, but the stock harmonic dampers can only take so much strain. That's where ATI's lineup of heavy-duty Duramax harmonic dampers come in. ATI's dampers are built to handle extreme levels of horsepower and torque and help limit torsional vibration through your big diesel's crankshaft so that you don't have a motor failure when you're pushing big power. ATI's harmonic balancers install right in place of the stock damper and accept the OEM belts, making them an easy reliability upgrade for your Duramax build.