Collection: 2020+ GMC Sierra HD (T1XX)

The T1XX-platform GMC Sierra HD brought serious refinements to GM's heavy-duty lineup, and the aftermarket has answered with a strong catalog of bolt-on upgrades to match. From suspension lifts that clear larger tires without sacrificing tow ratings, to skid plates and bumpers that protect your investment on rough terrain, there's no shortage of ways to build out your 2020+ Sierra HD for the work you actually do.

What to Consider When Upgrading Your Sierra 2500HD or 3500HD

• Intended use: Daily towing and hauling calls for different upgrades than weekend trail running or overlanding.
• Cab and bed configuration: Fitment can vary between regular, double, and crew cab builds, as well as short and long bed options.
• Diesel vs. gas: Some components — particularly exhaust, intake, and tuning-adjacent accessories — are engine-specific, so confirm compatibility before ordering.
• Lift and leveling: If you plan to run larger tires, coordinate your suspension choice with wheel and tire sizing to avoid rubbing or driveline stress.

At Dirt Masters, every product listed for the 2020+ GMC Sierra HD is vetted for T1XX fitment. Use the year and model filters to narrow your search, and if you have questions about compatibility or build direction, our team knows these trucks and is ready to help you spec the right parts the first time.