RPM Technik is one of the UK's independent Porsche specialists - we see if they have improved the breathtaking 718 Porsche Cayman GT4 RS, by introducing some interesting changes.

There’s an 'MR kit' by Manthey Racing with some aerodynamics improvements and an upgraded suspension, new brakes and exhaust, and a shorter ratio manual gearbox.

Another possible upgrade is the BBS forged alloy wheels, but the car Henry is looking at doesn’t have them.

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The MR Kit For This Porsche 718 Cayman Is Stylish And Bold

The MR kit gives the car a more aggressive stance with new turning veins underneath the front of the car, the gurney flap on the rear wing, and a more aggressive angle of the rear wing.

In terms of driving, a firmer new suspension with three-way adjustable coil overs from KW would be a benefit on the track, while it’s a compromise on the road.

Also, the stock suspension in the Porsche 718 Cayman GT4 RS is more resolved, with a superb balance that gives the driver confidence; so, in Henry’s opinion, the suspension upgrade is actually for those who spend more time on the track than on the road.

Another upgrade are the brakes supplied by a Liverpool-based manufacturer of carbon-ceramic brakes - their advantage is price for the most part, as they are almost half the cost of the standard Porsche Ceramic Composite brakes and can be re-faced a couple of times during their lifetime.

Plus, they are 70 per cent lighter, which is good for the car's unsprung mass.

The brake pedal feels firmer too, and reportedly the brakes ensure great thermal management on the track - they cost 15,000 dollars, but considering their repair potential, this is a good choice.

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The Long-Awaited Manual Gearbox Makes This Car Awesome

Porsche 719 Cayman GT4 MR, orange, rear profile view
Via: YouTube via Carfection

Still another upgrade is the exhaust by Ryan Edwards - an additional 4,000 dollars (and an hour of work) give a slight change in sound quality, but not much difference over a standard system.

Last but not least – the very welcome manual transmission with shorter ratios.

It does 71.3 mph at 8,000 rpm in second gear, compared to 83 mph in a standard manual box and 77 mph in a Porsche with a PDK automatic gearbox; it also feels quicker and more responsive.

The result is that with shorter ratios, the GT4 feels more alive, the feeling further enhanced by the lightweight clutch and flywheel.

The total amount for all the upgrades is around 50,000 dollars, which is a lot - still, although a standard Cayman GT4 is a spectacular car, some of these items are well worth considering - for the road or for the track, or a combination of both.