The New GT Hypercar Is a Highly Modified Porsche With Serious Horsepower

With 907 horsepower under the hood, RML Group's GT Hypercar is deserving of the name.

RML Group GT Hypercar

Photo by: RML Group

Jeff Perez

By: Jeff Perez

Aug 27, 2025 at 11:00am ET

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Standing out in a crowded field of modified Porsche 911s is no easy task, but RML Group’s take on the iconic sports car is one of the most exciting we've seen recently. Originally unveiled in October as the P39 prototype, today marks our first official look at the new GT Hypercar.

Based on the 992.1-generation 911 Turbo S, RML's GT Hypercar features a range of upgrades inspired by the Le Mans–winning Porsche GT1 from 1998. These enhancements span from aerodynamic improvements and interior refinements to a significant boost in horsepower.

It all starts with a reworked chassis. The GT Hypercar has an extended wheelbase and wider front and rear tracks compared to the standard 911. It also incorporates active aerodynamics, including an adjustable rear spoiler and a prominent front splitter designed to increase downforce.

Under the hood is a heavily modified version of Porsche’s familiar 3.8-liter flat-six engine. Tuned by Litchfield Motors, it now produces an impressive 907 horsepower and 738 pound-feet of torque. While RML hasn’t confirmed the transmission, it's likely to retain the factory Turbo S’s eight-speed dual-clutch gearbox.

RML Group GT Hypercar

Source: RML Group

Buyers who opt for one of the 10 Special Edition models will receive both the Performance Pack and the Track Pack. These add further upgrades like an adjustable ride height, a rear roll cage, and a rear-seat delete for additional weight savings.

Despite its track focus, the GT Hypercar is fully road legal. That said, RML says the supercar was engineered with circuits like the Nürburgring in mind.

When the P39 prototype was first revealed, RML claimed it could lap the Nürburgring in 6 minutes and 45 seconds. Now, the company is targeting a time closer to 6 minutes and 30 seconds—which would be quicker than the Porsche 911 GT2 RS Manthey (6:43.300).

RML Group GT Hypercar

Photos by: RML Group

RML Group GT Hypercar

RML Group CEO, Paul Dickinson, notes:

GT Hypercar demonstrates the very best of RML Group. Our ability to produce extraordinary world-beating products and solutions in record time and within budget is unmatched, as we’ve proven again here.

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The GT Hypercar made its debut this week at Salon Privé in the UK and is now officially available to order. RML plans to build just 39 units, a nod to the 39 prototypes tested during development. Of those, 10 will be Special Edition models—like the one shown here.

Pricing hasn’t been disclosed, but given the extensive modifications and exclusivity, expect it to command a substantial premium.

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