Sharpening up the current 911 GT3’s already astounding on-track capabilities, Porsche has unveiled a new Manthey Kit for its most focused 911.Â
Porsche has unveiled a new Manthey Kit for the 992.2-generation 911 GT3, which we’ve sampled at the international launch event in Spain in 2025. Building on the Weissach Package, the Manthey Kit adds aerodynamic components for increased downforce, as well as modified suspension and upgraded brakes. Noteworthy, equipped with this package, the 911 GT3 completed a lap around the Nürburgring Nordschleife in 6:52.981 minutes; 2.76 seconds faster than the previous-generation (992.1) 911 GT3 fitted with a Manthey Kit.
The underbody has been designed as a continuous aerodynamic component, complete with larger turning vanes (1.5 m) for additional downforce. Switched to Circuit mode, the 911 GT3 fitted with the Manthey Kit produces 540 kg of downforce at 285 km/h.
The front lip has been extended by 12 mm, and diffuser fins and cannards have been added to the bumper. The ‘swan-neck’ rear wing also adopts wider end plates and a Gurney flap. The fins on the rear diffuser have also been extended.
The Manthey Kit further adds special four-way adjustable coil-over suspension to the package. Forged alloy wheels measuring 20 and 21 inches in size, fore and aft, are also available. Fitting the latter reduces unsprung mass by 6 kg. Steel brake lines are also added as part of the Manthey Kit, while racing brake pads for the Porsche Ceramic Composite Brake (PCCB) system are available as an option. Completing the Manthey Kit are carbon-fibre wheel covers (or aerodiscs) for the rear wheels.
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