Already celebrated as one of the most advanced track-ready vehicles on the planet, the 992-generation GT3 RS has been taken to the next level by Manthey-Racing. This Porsche-owned tuning house has introduced a series of innovative modifications under the aptly named Manthey Kit, making an already ferocious car even more aggressive on the track.
But this leap in performance doesn’t come without compromise, as the upgrades include replacing the rear window with a lightweight carbon-fiber panel, significantly altering the car’s appearance and functionality.
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A Closer Look at Manthey-Racing: The AMG of Porsche
Manthey-Racing might not be as widely known as AMG or BMW’s M division, but in the Porsche world, it represents the pinnacle of performance tuning. Based in Germany, Manthey-Racing has a deep-rooted partnership with Porsche, providing modifications that seamlessly integrate with the brand’s engineering ethos. Unlike AMG or M, Manthey’s upgrades occur after the car leaves the production line, but they still carry the coveted Porsche warranty.
The Manthey Kit for the 911 GT3 RS is a testament to the company’s expertise, offering enhancements tailored to the track enthusiast who demands ultimate precision and speed. While the kit doesn’t modify the car’s powerful 4.0-liter flat-six engine, it transforms the GT3 RS in other critical areas, focusing on aerodynamics, suspension, and braking.
Key Features of the Manthey Kit
Manthey’s modifications are designed to push the boundaries of performance without compromising reliability. Some of the standout features include:
- Aerodynamic Enhancements:
- A massive front splitter, reinforced with stabilizing bars.
- Diveplanes and Gurney flaps to improve airflow and reduce drag.
- A striking shark-fin-inspired carbon-fiber rear panel, replacing the standard rear window.
- An upgraded rear wing and aerodisc wheel covers, all contributing to a remarkable 1000kg of downforce at 285 km/h.
- Suspension Upgrades:
- Stiffer springs: 30% more rigid at the front and 15% at the rear.
- New dampers with separate compression and rebound valves, adjustable in three modes: Normal, Sport, and Track.
- Braking Enhancements:
- Steel-sheathed brake lines for increased durability.
- Racing brake pads (available only with the Porsche Ceramic Composite Brake system).
- Visual and Practical Add-ons:
- Carbon-fiber illuminated door sills.
- Custom Manthey puddle lights.
- A functional towing eye for track use.
These upgrades are not merely cosmetic; they are meticulously engineered to enhance the GT3 RS’s track performance, allowing drivers to push boundaries with confidence.
Revolutionizing Aerodynamics: The Science Behind the Shark Fin
The centerpiece of the Manthey Kit’s aerodynamic transformation is the innovative shark fin. Inspired by Porsche’s 963 prototype racer, this carbon-fiber panel replaces the rear window, reducing the car’s weight by 25%. Beyond weight savings, the fin enhances stability during high-speed cornering by managing airflow more effectively. Coupled with the upgraded rear wing and aerodisc wheel covers, the aerodynamic package increases downforce by 16%, a crucial advantage for track performance.
The 1000kg of downforce generated at 285 km/h is not just a number; it’s a game-changer. For comparison, some dual-cab utes barely manage to carry similar weights in payload. The enhanced downforce improves traction and stability, enabling the car to corner with greater precision and at higher speeds.
Balancing Downforce and Drag
One of the most impressive aspects of Manthey’s work is achieving this substantial increase in downforce without a corresponding rise in drag. This delicate balance is critical for maintaining the GT3 RS’s high-speed efficiency and lap-time potential.
For the driver, these aerodynamic improvements translate to a more predictable and stable experience, especially in high-speed sections of demanding tracks like the Nürburgring Nordschleife. This track, often referred to as “The Green Hell,” is where Manthey-Racing has repeatedly demonstrated its expertise, winning seven 24-hour races and setting numerous lap records.
Suspension and Braking: Adapting to Extreme Loads
To complement the increased aerodynamic load, Manthey-Racing has reworked the GT3 RS’s suspension. Stiffer springs at the front and rear ensure the car remains planted under heavy downforce, while the new dampers provide greater adaptability for varying track conditions.
The dampers’ dual-valve design allows for fine-tuning based on three driving modes:
- Normal: For casual driving and uneven surfaces.
- Sport: Optimized for spirited driving on smooth roads.
- Track: Aimed at maximum performance under race conditions.
Braking is another critical area addressed by the Manthey Kit. The steel-sheathed brake lines offer better heat resistance and durability, essential for enduring the punishing demands of the track. For those with the PCCB system, racing brake pads can be added, delivering superior stopping power and extended longevity.
These mechanical upgrades ensure that the GT3 RS not only handles the added downforce but also excels under the intense conditions it was designed to conquer.
Track Records and Legacy: Aiming for Nürburgring Supremacy
The Nürburgring Nordschleife serves as the ultimate proving ground for high-performance vehicles, and the Manthey-equipped GT3 RS is no exception. While the official lap time for this modified version is yet to be announced, expectations are high. The standard GT3 RS set an impressive 6:44.848 lap in 2022, and Manthey’s previous work with the GT2 RS achieved a blistering 6:43.300, setting a production car record at the time.
These times reflect more than raw speed; they are a testament to engineering precision and racing pedigree. Manthey-Racing’s extensive experience at the Nürburgring, combined with their victory at the 2023 Bathurst 12 Hour, underscores their status as one of the premier tuning houses in the world.
The Competition
While the Manthey-equipped GT3 RS faces stiff competition from other high-performance brands like the Mercedes-AMG One, which holds the current Nürburgring record at 6:29.090, it remains a formidable contender. Its advantage lies in being a naturally aspirated, track-focused machine, delivering a purer driving experience compared to hybrid hypercars.
