625-Horsepower Supercharged Chevrolet Tahoe & Suburban Mark Start of New Hennessey – Chevrolet Golden Era

Hennessey, the Texas-based hypercar manufacturer and high-performance vehicle creator, has announced a new 625 hp version of the 2025 Chevrolet Tahoe and Suburban SUVs. The H600 performance package features a host of mechanical and aesthetic enhancements, ranging from a new Magnuson supercharger, sport-touring exhaust, and Brembo brakes, to a menacing lowered ride height and distinctive Hennessey wheels.

The pair of full-size SUVs are the first General Motors models available directly to customers through Hennessey’s authorized Chevrolet dealers around the United States. Operating just like any other new vehicle purchase, the new GM-Hennessey relationship will see all Hennessey products offered with comprehensive warranty cover and GM’s full range of finance products.

John Hennessey, company founder and CEO: “My family and I have owned countless Chevy Suburbans over the years – they’ve always been our go-to vehicles for their comfort, performance, and the space to haul kids, gear, and everything in between. That’s why we’re so excited about our 625-horsepower upgrade – it turns the Tahoe and Suburban into true driver’s SUVs that are an absolute blast behind the wheel, even when fully loaded.

“What makes this even more special is our new partnership with authorized GM dealers across the country, which makes it easier than ever for customers to access Hennessey performance directly through their local dealership – complete with financing options, dealer support, and the peace of mind of the full GM warranty.”

Hennessey’s upgrades to the potent 6.2-liter V8 Tahoe and Suburban see the Texan team increase the power by more than 200 hp to 625 bhp @ 5,500 rpm, while torque grows by more than a third to 633 lb-ft @4,200 rpm. The significant performance enhancements make the GM models among the most formidable SUVs on the market.

The mechanical enhancements of the H600 are paired with a range of distinctive visual enhancements.  Sitting on 24-inch gloss black lightweight sport wheels, the GM SUVs are also lowered by 2.5 inches for an even more distinctive and sporty stance, while Hennessey badging inside and out acknowledges the plethora of enhancements.

Hennessey upgrades are available on all Chevrolet Tahoe and Suburban models that offer the more powerful 6.2-liter naturally aspirated V8. All models are paired with a 10-speed transmission and a suite of tech to enhance the drivability and safety of the vehicle. Heavy-duty six-piston Brembo front brakes keep the power in check, while Firestone Firehawk Pursuit tires ensure optimal handling and grip.

Hennessey is already taking orders and delivering the enhanced 2025 H600 Tahoe and Suburban, backed by the full GM vehicle warranty and Hennessey’s own three-year / 36,000-mile limited warranty. Customers can enquire about stock models and factory builds via their local authorized Chevrolet retailer or direct with Hennessey by calling +1 979 885 1300 or at HennesseyPerformance.com.

Specification – Hennessey H600 Tahoe and Suburban: 
625 bhp @ 5,500 rpm
633 lb-ft torque @ 4,200 rpm
High-Performance Supercharger System
High-Flow Intercooling System
High-Flow Air Induction System
Crankcase Ventilation System
HPE Engine Management Calibration
24-inch Gloss Black Performance Wheels
Front & Rear Suspension Lowering Kit
Six-Piston Performance Front Brakes with Red Calipers
Sport Touring Catback Exhaust System
 All Necessary Gaskets, Fluids & Hardware
Professional Installation
Chassis Dyno Testing
Serial-Numbered Engine Plaque
Hennessey Exterior Badging
Limited to 100 Units in 2025
3-Year / 36,000 Mile Warranty