Porsche 718 Cayman GT4 RS review

This is the moment to mention a strict weight-saving regime that includes lighter, thinner glass for the rear screen, carbon-fibre reinforced plastic for the bonnet and front wings, lightweight carpets, fabric door pulls and less insulation… it all adds up to a kerbweight of 1,415kg. That’s 35kg less than a PDK-equipped GT4.

Then there’s the huge, manually adjustable swan-neck rear spoiler and manually adjustable front diffuser that offer 25 per cent more downforce than you get in a GT4. If you want to go all the way, there’s the optional £8,913 Weissach Pack, as fitted to ‘our’ car, that includes a titanium exhaust system with tips inspired by the retro-tastic 935, logos on the headrests, Porsche lettering on the rear screen and exposed carbon weave on the enlarged induction ducts, airbox cover, mirror trims, rear wing and bonnet (the body-matched stripe is an option).

A Clubsport pack that includes a steel roll cage and brilliantly comfy and grippy bucket seats is a no cost option, but you can swap in a titanium roll cage for £2,273, add ceramic brakes for £5,595 and only if you buy the Weissach pack, you can swap out the 20-inch forged aluminium rims for 20-inch forged magnesium wheels that save 10kg… but cost £10,521.

Our test car had the infotainment screen deleted (another no cost option), leaving a chasm in the middle of the dash. It’s a controversial move because it suits the car’s commitment to kg-saving, but given how usable it is on the road, we’d keep it in so you can use Apple CarPlay and listen to music on longer trips. The air-con cannot be deleted, by the way, which is entirely sensible. Unless you enjoy stewing in your own sweat.