H850

MUSTANG DARK HORSE

Ford Mustang Dark Horse Upgrade

The best upgrade for the Ford Mustang Dark Horse includes a high-performance supercharger, upgraded fuel injectors, a new fuel pump, and more. Hennessey® harnesses the 5.0L V8 engine to deliver high-performance thrills to this supercar. 

Performance

R&D

Tuning

Warranty

Hennessey Performance, the world-renowned Texas-based hypercar manufacturer and high-performance vehicle creator, offers high-performance supercharged upgrades for the all-new, seventh-generation 2025 Ford S650 Mustang Dark Horse. Calibrated with an HPE Engine Management software upgrade, the ‘H850’ Dark Horse produces 850 horsepower and 650 lb-ft of torque — a 70 percent increase in power!

Hennessey Performance

Testing for all Hennessey® Performance models begin at the company’s headquarters in Sealy, Texas. Under the guidance of our Research and Development team, each model line is subjected to hundreds of hours of research and development. This helps guarantee that Hennessey® Performance’s Ford Mustang Dark Horse performance package enhances every aspect of the vehicle while retaining complete usability and manufacturer driving modes.

Hennessey Performance

After lab-based evaluation, development moves to Hennessey® Performance’s various on-site dyno bays for live assessment. The final phase of tuning has development models of the Ford Mustang Dark Horse test at the Pennzoil Proving Ground at Hennessey® Performance’s headquarters. This final phase is performed to evaluate the Mustang Dark Horse’s tune upgrade in the real world. Even after each model line is signed-off, every customer vehicle undergoes its series of quality assurance tests, including a detailed test drive by Hennessey® Performance’s engineers.

Hennessey Performance

Customer satisfaction is at the core of every Hennessey® Performance Ford Mustang Dark Horse performance upgrade. Emphasizing this point, the company provides a comprehensive warranty on each 5.0-liter V8 Ford Mustang Dark Horse 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.

Hennessey Performance

Performance

Hennessey Performance

Hennessey Performance, the world-renowned Texas-based hypercar manufacturer and high-performance vehicle creator, offers high-performance supercharged upgrades for the all-new, seventh-generation 2025 Ford S650 Mustang Dark Horse. Calibrated with an HPE Engine Management software upgrade, the ‘H850’ Dark Horse produces 850 horsepower and 650 lb-ft of torque — a 70 percent increase in power!

R&D

Hennessey Performance

Testing for all Hennessey® Performance models begin at the company’s headquarters in Sealy, Texas. Under the guidance of our Research and Development team, each model line is subjected to hundreds of hours of research and development. This helps guarantee that Hennessey® Performance’s Ford Mustang Dark Horse performance package enhances every aspect of the vehicle while retaining complete usability and manufacturer driving modes.

Tuning

Hennessey Performance

After lab-based evaluation, development moves to Hennessey® Performance’s various on-site dyno bays for live assessment. The final phase of tuning has development models of the Ford Mustang Dark Horse test at the Pennzoil Proving Ground at Hennessey® Performance’s headquarters. This final phase is performed to evaluate the Mustang Dark Horse's tune upgrade in the real world. Even after each model line is signed-off, every customer vehicle undergoes its series of quality assurance tests, including a detailed test drive by Hennessey® Performance’s engineers.

Warranty

Hennessey Performance

Customer satisfaction is at the core of every Hennessey® Performance Ford Mustang Dark Horse performance upgrade. Emphasizing this point, the company provides a comprehensive warranty on each 5.0-liter V8 Ford Mustang Dark Horse 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.

Upgrades at a Glance

0
HORSEPOWER
0
LB-FT OF TORQUE

3 / 36,000

WARRANTY

Hennessey Performance

Specifications

Mustang Dark Horse

The 2025 Ford Mustang Dark Horse has a naturally aspirated Gen-4 Coyote 5.0-liter V8, to which Hennessey adds a high-performance supercharger, high-flow air induction system, upgraded fuel injectors and fuel pump, plus Hennessey’s rigorously developed engine management system to reach 850 horsepower, alongside boosted torque of 650 lb-ft.

  • 850 bhp @ 7,250 rpm
  • 650 lb-ft torque @ 4,900 rpm
  • High-Performance Supercharger System
  • High-Flow Air Induction Upgrade
  • Upgraded Fuel Injectors
  • Upgraded Fuel Pump
  • HPE Engine Management Calibration
  • Professional Installation
  • Chassis Dyno Tuning and Road Testing
  • Serial-Numbered Engine Plaque
  • Hennessey and H850 Exterior Badging
  • Hennessey Embroidered Headrests
  • 3-year / 36,000-Mile Limited Warranty
  • (Optional) Performance Wheel Package
  • (Optional) Legend Graphics (Black / Red / Silver / White)

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Experience the pinnacle of automotive performance and Hennessey exclusivity. Elevate your vehicle with our ultra-exclusive performance build powered by Hennessey Special Operations (HSO). If you can dream it, we can build it. Click the button below to apply.

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