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Porsche releases Manthey performance kit for the 718 Cayman GT4 RS

Six seconds faster on the Nordschleife

Photo © 2023 Dr. Ing. h.c. F. Porsche AG

Optimized for maximum performance on the track

A Porsche Cayman GT4 RS with the new Manthey Kit completed a lap at the Nordschleife circuit at the Nürburgring in 7:03.121 minutes. This makes it exactly 6.179 seconds faster than the 718 Cayman GT4 RS without the upgrade kit. The modifications focus on aerodynamics and chassis components. Pads designed for the track are available as an option for the powerful braking system. The new kit was developed in Meuspath, especially for track days and in close collaboration between engineers at Porsche Motorsport and the Nordschleife specialists at Manthey. The road-legal components can be fitted aftermarket and will be sold by Porsche Centers worldwide.

Photo © 2023 Dr. Ing. h.c. F. Porsche AG

Downforce almost doubled with the Performance setting

The Manthey Kit for the 718 Cayman GT4 RS is recognizable by the comprehensive changes to the additional functional aero parts. At the front of the car, flaps and new air curtains with a wheel arch Gurney flap and a new carbon underbody with diffusers improve the downforce on the front end. The 85-millimeter wider rear wing features a new wing blade and larger endplates, increasing the downforce on the rear axle. It has four-stage adjustability. To be able to withstand the higher aerodynamic forces, the bodywork of the rear engine cover is reinforced with a carbon-weave finish.

Photo © 2023 Dr. Ing. h.c. F. Porsche AG

The aerodiscs on the rear wheels are also made of CFRP. These reduce the turbulence around the car’s rear and visually round off the aerodynamic package. They can be customized with an optionally available decorative film. At 200 km/h, when the rear wing is set to Performance for track use, total downforce increases from 89 to 169 kilograms.

Photo © 2023 Dr. Ing. h.c. F. Porsche AG

Adjustable coilover suspension with modified spring rates

Together with Manthey, Porsche has developed a special coil-over suspension with an inverted set-up for the 718 Cayman GT4 RS that can be adapted for the track. The spring struts can be adjusted to four different positions, and the rebound and compression stages can also be adjusted – without the need for tools. The spring rates on the front suspension have been increased by 20 percent. The chassis is available in two versions – for cars with and without a lift system on the front axle. Steel brake lines are also a standard component of the kit. This guarantees an exact pressure point, ensuring optimal braking power delivery. Special racing brae pads with particularly constant friction behavior over a wide temperature range are optionally available. Illuminated door sill guards with the Manthey logo are available to personalize the car visually. Towing loops are also optionally available, designed especially for the track.

Photo © 2023 Dr. Ing. h.c. F. Porsche AG

Additional extras with a carbon-weave finish

The kit can optionally be extended with a specially designed CFRP rear spoiler attachment. The part, which is finished with carbon weave, is attached to the standard rear spoiler. In combination with the bigger rear wing, this further increases downforce on the rear axle by around four percent. The car’s performance is visually underlined by the optional louvers (wheel arch vents) with a carbon-weave finish in the front wings. These match the look of the Weissach package.

Photo © 2023 Dr. Ing. h.c. F. Porsche AG

More than six seconds faster on the Nordschleife

The 718 Cayman GT4 RS with the Manthey Kit can demonstrate its full potential on the Nürburgring Nordschleife, the traditional benchmark for sports cars at Porsche. With Porsche brand ambassador Jörg Bergmeister at the wheel, the modified GT sports car completed the 20.8-kilometer course in the Eifel at 18 degrees Celsius under an overcast sky in 7:03.121 minutes – 6.179 seconds faster than the series-production 718 Cayman GT4 RS did the previous year. Both cars had optional Michelin Pilot Sport Cup 2 R tires. The lap time was certified by a notary on site.

The Manthey Kit is sold by Porsche Centers worldwide. The country-specific price is listed in the accessory finder ( In Europe, the launch is planned for December 2023. Other markets will follow. The manufacturer’s warranty for the 718 Cayman GT4 RS is unaffected.

Photo © 2023 Dr. Ing. h.c. F. Porsche AG

Original Press Release

Check out last year’s Manthey Kit equipped 911: