The GMC Sierra AT4X is a hugely impressive rig right out of the box, but unfortunately, it doesn’t quite compete with the Ford F-150 Raptor. That said, anyone looking to upgrade their GMC Sierra can turn to the folks at PaxPower in Houston, Texas, which is offering the PaxPower Jackal upgrade, taking the pickup to all new levels of capability and performance. Now, we’re getting a tour of the PaxPower Jackal GMC Sierra AT4X thanks to the following feature video.
The video is a bit under nine minutes long, and includes a rundown on what the package offers and what options are available. The PaxPower Jackal build can be applied to 2022.5-model-year-and-newer GMC Sierras, including AT4, AT4X, and Denali trim levels.
Outside, this particular example is 3 inches wider per corner thanks to custom fenders. Customers are also offered a custom hood, as well as steel fabricated bumpers. Further options include alternative bumpers, hoods, lighting, steps, bed covers, and even interior upgrades.
Suspension is also critical to the build, and the Jackal upgrade includes a combination of BajaKits components and aftermarket shocks from the likes of King Racing and Fox Racing. For AT4X models like the GMC Sierra featured here, PaxPower reuses the factory rear leaf springs and Multimatic DSSV shocks. The track is widened by 6 inches, and there is a substantial increase in suspension travel as well. Running gear includes either 35-inch or 37-inch BFGoodrich off-road tires.
With the naturally aspirated 6.2L V8 L87 gasoline engine under the hood, some customers will be content with the factory power levels. However, for those that need more, PaxPower is offering an optional forced induction upgrade that bolts a 3.0L Whipple supercharger up top, bringing peak output to 650 horsepower and 650 pound-feet of torque under 7 psi of boost. For reference, stock output from the 6.2L V8 L87 is set at 420 horsepower and 460 pound-feet of torque. Complementary upgrades include a high-flow intake, upgraded cooling, a new exhaust, and tuning.
Check out the full feature right here: