GMC H600 Yukon & Yukon XL Hennessey

Hennessey H600 GMC Yukon & Yukon XL Upgrade

The Hennessey H600 GMC Yukon takes one of America's most capable full‑size SUVs and elevates it into a true high‑performance machine. Designed for drivers who want commanding power without sacrificing luxury, comfort, or everyday usability, the H600 delivers supercar‑level performance in a refined, family‑friendly package.

Engineered by Hennessey's performance specialists, this upgrade dramatically increases horsepower and torque while maintaining smooth drivability and long‑term reliability. Whether you're merging onto the highway or cruising long distances, the H600 offers instant throttle response and confident acceleration.

Every H600 Yukon is professionally installed and finished with exclusive Hennessey touches, including premium exterior badging and a serial‑numbered engine plaque. Production is strictly limited, making this a rare performance SUV built for those who want something truly distinctive.

Upgrades at a Glace

GMC Yukon / Yukon XL H600 Upgrade

  • 625 horsepower @ 5,500 rpm
  • 633 lb‑ft of torque @ 4,200 rp
  • High‑performance twin‑screw supercharger system
  • Air‑to‑water intercooler system
  • HPE engine management calibration
  • Sport Touring cat‑back exhaust system

Chassis, Wheels & Braking Enhancements

  • 24‑inch Hennessey performance wheel upgrade
  • 6‑piston performance braking system with red calipers
  • Front and rear suspension lowering kit
  • Recalibrated suspension ride‑height sensors

Build Details & Exclusivity

  • Professional installation by Hennessey Performance
  • All required gaskets, fluids, and hardware included
  • Serial‑numbered engine plaqu
  • Premium Hennessey exterior badging
  • Limited production: 100 units for the 2025 model year
  • 3‑year / 36,000‑mile warranty

INTERIOR

PERFORMANCE

Texas‑based performance builder Hennessey® has introduced an all‑new, comprehensive upgrade package for the GMC Yukon. Designed for late‑model GM vehicles powered by the 6.2L V8, the package dramatically increases output from the factory 420 bhp to an impressive 600 bhp, delivering a noticeably more aggressive and responsive driving experience.

R&D

Every Hennessey® Performance model undergoes extensive testing at the company's headquarters in Sealy, Texas. Led by the Research and Development team, each vehicle platform is refined through hundreds of hours of evaluation to ensure the 2026 GMC Yukon performance upgrades enhance capability without sacrificing drivability or factory drive modes.

Tuning

Following extensive lab evaluation, development moves to Hennessey® Performance's on‑site dynamometer facilities for real‑time testing. Final tuning is completed at the Pennzoil Proving Grounds at Hennessey® headquarters, where the 2026 GMC Yukon upgrade is validated in real‑world driving conditions. Even after final approval, every customer vehicle completes a full quality‑assurance process, including a detailed road test by Hennessey® Performance engineer.

Warranty

Customer satisfaction is at the core of every Hennessey® Performance GMC Yukon performance upgrade and modifications package. Emphasizing this point, the company provides a comprehensive warranty on each 6.2-liter V8 2026 GMC Yukon upgrade to provide total peace of mind. Customers are invited to take final delivery of their new Hennessey® vehicle at the Pennzoil Proving Grounds in Sealy, Texas for the ultimate performance experience.

GMC Yukon / XL Engine Upgrades

Take the 2026 GMC Yukon or Yukon XL to the next level with a premium engine upgrade featuring twin superchargers, a stainless‑steel cat‑back exhaust, and bold 24‑inch Hennessey Performance wheels. This package maximizes the power of the 6.2L V8, delivering exhilarating performance in a full‑size SUV.

Availability

The H600 supercharged upgrade is available exclusively for GMC Yukon and Yukon XL models equipped with the 6.2L V8 engine.

Inquire today to learn more about availability, pricing, and build options.

Disclaimer

  • H600 supercharged upgrade is only available on vehicles equipped with the 6.2L V8 engine
  • Both factory key fobs are required to complete GM SUV modifications
  • Factory tires are retained unless the vehicle is equipped with 19", 20", or 21" wheels
  • Vehicles with wheels smaller than 22" require a $1,995 upgrade for new performance tires
  • Customers may choose between gloss black or polished silver 22" wheels







Price(s) include(s) all costs to be paid by a consumer, except for licensing costs, registration fees, and taxes. Not available with special finance or lease offers.

MPG estimates on this website are EPA estimates; your actual mileage may vary. For used vehicles, MPG estimates are EPA estimates for the vehicle when it was new. The EPA periodically modifies its MPG calculation methodology; all MPG estimates are based on the methodology in effect when the vehicles were new (please see the Fuel Economy portion of the EPAs website for details, including a MPG recalculation tool).

The features and options listed may not apply to this specific vehicle.

The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

** Doc Fee: $799

Dealer Discount applied to everyone

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  1. Performance Buick GMC of Woodbridge

    920 Rt 1 North
    Woodbridge, NJ 07095

    • Sales: (866) 566-5714
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