Manthey-Porsche Cayman GT4 RS revealed

Aero and chassis upgrade kit announced for Porsche’s most extreme Cayman

We asked for a Cayman GT4 wound up to 11 and Porsche delivered just that with the GT4 RS in 2022. As hardcore as they come, for some too much, it’s a production road car that was only really intended to get you to the circuit ahead of delivering its killer blow on track. And now Porsche, via its Manthey Racing division, has added more to the RS’s visceral driving experience with an aero and chassis upgrade kit that whips six-seconds off the regular RS’s Nürburgring lap time.

The kit, which is available as an aftermarket fitment from Porsche centres consists of front to rear aero upgrades, a chassis overhaul and a further option to upgrade the braking system.

Core to the Manthey kit is a set of aero upgrades that run nose to tail starting with new intake flaps and air curtains that include wheel arch Gurney flaps. There’s also a new carbonfibre underfloor with new diffusers that combine to increase front end downforce. 

At the rear is an even larger four-stage adjustable rear wing, 85mm wider in fact, which also includes new endplates to combine to boost downforce across the rear axle, which amounts to an increase to 169kg from 89kg when the rear wing is set to track mode and the car is travelling at 120mph. Aero discs manufactured from carbon reinforced plastic (CFPR) on the rear wheels clean up the airflow, reducing turbulence. 

Chassis upgrades are equally comprehensive, with adjustable coilovers fitted at each corner featuring four-way adjustable struts that allow configurable rebound and compression rates. The front springs are, as a result, 20 percent stiffer. 

Steel brake lines are also included with the kit, but you’ll need to pay extra for the more aggressive track orientated pads that Manthey has also developed. 

It all amounts to a new Nürburging lap time some six-seconds quicker than a Cayman GT4 RS, with the Manthey car fitted with the same Michelin Pilot Sport Cup 2 R tyre stopping the clock at 7min 03.121.

Prices for the Manthey Kit will be announced closer to its market introduction, which is scheduled for December 2023. Fitting the kit won’t invalidate Porsche’s warranty.

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