5 Minutes
From P39 Prototype to GT Hypercar
British engineering specialist RML Group has transformed its P39 prototype — first revealed in May — into a production-ready GT Hypercar (GTH). Built on the bones of the Porsche 992.1 Turbo S, the RML GT Hypercar is a limited-run, track-focused hypercar engineered for road legality and circuit dominance. RML confirmed a strict production run of 39 examples, the first of which premiered this week at Salon Privé, giving enthusiasts a clear look at what this Porsche-derived machine delivers in terms of design, performance, and specification.
Design and Aerodynamics
The RML GTH receives extensive exterior reinforcements aimed squarely at improving downforce and aerodynamic efficiency. From new splitters and aggressive rear wings to air curtains and F1-inspired DRS, nearly every panel has been reimagined to optimize airflow. Extensive carbon fiber bodywork replaces many OEM panels, while the roof and hood remain exposed carbon on the Special Edition example. Visually, the car is unmistakable — painted in a unique Storm Purple with contrasting gold center-lock wheels and badges that signal its bespoke status.
Exterior highlights
- Carbon-fiber body panels and aerodynamic dive planes
- Formula 1-style DRS for adjustable rear aero
- Front splitters, side skirts, rear wing and air curtains
- 20-inch front and 21-inch rear forged wheels with center-lock hubs
Interior and Track-Ready Equipment
Inside, the GT Hypercar strikes a purposeful balance between race function and road comfort. The 40th Anniversary Special Edition (SE) shown at Salon Privé features standard Porsche seats retrimmed in premium leather with colorful contrast stitching and carbon fiber inlays. A discreet roll-cage underlines the car’s track intentions, while the Performance Pack and Track Pack enable bespoke setup changes — including ride height adjustment and the option to remove rear seating to save weight.
Performance and Mechanical Upgrades
Though the RML GTH retains the Porsche 992.1 Turbo S’s chassis and flat-six engine as its starting point, both have been heavily revised. RML reworked the chassis from the hubs inward, improving stiffness and handling precision. With engine development support from Litchfield Motors, the twin-turbocharged flat-six has been elevated to a headline figure of up to 920 horsepower. Such output is targeted at lap record capability while preserving street legality for spirited public-road use.
Key drivetrain & chassis upgrades
- Twin-turbo flat-six upgraded to approximately 920 hp (with Performance Pack)
- Chassis revisions including reworked hubs and strengthened mounting points
- Upgraded hydraulics, steering calibration, and race-derived suspension
- Track Pack: ride-height adjustment, rear-seat delete option, and optimized damping
Market Positioning and Pricing
The RML GT Hypercar positions itself as a boutique, ultra-limited hypercar for collectors who want a road-legal car with uncompromising track capability. While RML has not published official pricing, expectations point to high six-figure sums given the bespoke engineering, extreme performance, and limited availability. All 39 units have already been allocated, and the first production car is one of only 10 built to the 40th Anniversary Special Edition specification, making it especially collectible.
Comparisons and Competitors
In the current hypercar landscape, the RML GTH sits between factory-built track hypercars and coachbuilt specials. Compared with factory-tuned Porsche 992 Turbo S variants, the RML package is far more track-focused — emphasizing aerodynamics, weight savings, and ultimate power. Against boutique rivals from small engineering houses, the RML’s advantage is its direct Porsche DNA combined with specialist upgrades from experienced partners like Litchfield Motors. For buyers seeking a limited-run Porsche-based hypercar with genuine circuit credentials, the RML GT Hypercar is a clear contender.
Specifications (summary)
- Base: Porsche 992.1 Turbo S chassis and flat-six engine
- Power: Up to ~920 hp (with RML/Litchfield upgrades)
- Bodywork: Extensive carbon fiber aero package including DRS
- Wheels: 20-inch front / 21-inch rear center-lock forged wheels (gold on SE)
- Production: 39 units total; 10 examples as 40th Anniversary Special Edition
- Packs: Performance Pack and Track Pack available
Conclusion
The RML GT Hypercar is a specialist’s interpretation of the Porsche 992.1 Turbo S: a limited-production, track-honed hypercar that keeps the legalities and conveniences required for road use. With dramatic aero, a heavily revised chassis, specialist engine work producing up to 920 hp, and exclusive finishes like Storm Purple paint and gold center-lock wheels, RML has delivered a compelling proposition for collectors and track-day enthusiasts. Given the full allocation of all 39 examples, the model’s exclusivity is already established — and RML’s GTH will likely be judged by its track times and desirability in the high-end sports car market.
Comments