Porsche has released the first images and details of its brand-new, track-only 718 Cayman GT4 Clubsport, and the big news is that it retains a naturally aspirated flat-six motor, rather than adopting a four-cylinder turbo engine as per other models in the current 718 Cayman/Boxster range.

The competition-prepped GT4 Clubsport’s 3.8-litre six-pot ekes out a robust 425bhp – up 40bhp on the oldie – and 425Nm of twist, which is channelled to the rear wheels via a six-speed dual-clutch gearbox and mechanical differential lock (to deliver maximum traction on the racetrack).

Now, in case you’re salivating at the prospect of all this, you should be aware that the roadgoing Cayman GT4 that will follow in due course will stick to four-cylinder turbo power, rather than getting the same flat-six as its competition-prepped sibling.

Explaining why the GT4 Clubsport doesn’t get a four-cylinder turbo motor, Porsche’s head of GT Customer Motorsports, Matthias Scholz says: “A customer who knows the 981 generation GT4 Clubsport – everything technical about the car because they've learned it for three years now—can carry over their knowledge to the new car.

“The next thing is that we have very, very good experience with the engine from the 981 (previous Cayman generation). It's very robust, so why change it?” Scholz added.

The new GT4 Clubsport has been built by Porsche Motorsport to comply with global motor racing regulations, so it scores natural-fibre composite body parts (similar to carbon-fibre) in the doors and rear wing to make it about 130kg lighter than the Cayman GTS road car.

“Tipping the scales at 1320 kilograms, the 718 Cayman GT4 Clubsport, delivered ex-works with a welded-in safety cage, a racing bucket seat as well as a six-point harness, is a real lightweight,” says Porsche in its press release.

In keeping with its track-focused job description, the Cayman GT4 Clubsport also gains 380mm steel disc brakes and borrows lightweight spring-strut front suspension from the 911 GT3 Cup car.