PMNA: GT4’s Rising Benchmark Led to Porsche 911 GT4 R

Photo: Porsche

The rising level of GT4 platform and desire from customers to have more motorsport-related amenities led Porsche down the route of adapting its 911 Cup car to the platform according to Porsche Motorsport North America President and CEO Volker Holzmeyer.

Announced last month, the Porsche 911 GT4 R will succeeded the 718 Cayman GT4 RS Clubsport as the German manufacturer’s new category offering, which will make its official race debut in January’s IMSA Michelin Pilot Challenge season opener at Daytona International Speedway.

Powered by the same 4.0 liter six-cylinder boxer engine that debuted in the new-for-2026 Type-992.2 Cup car, Holzmeyer estimates that roughly “98 percent” of the single-make car is carried over to the 911 GT4 R.

While admitting to Sportscar365 that the discontinuation of the internal combustion-engined Cayman road car, a decision that has since been reversed, was “part of the discussion” in the move to the 911 platform, other factors made it the most logical step for its customer base.

“When we brought out the first Cayman in 2016, the idea was to create an entry-level track day car,” Holzmeyer told Sportscar365. “To take a Porsche road car and change it as much as necessary to make an entry level [race] car.

“Then a half a year later, SRO came up with GT4 and that car became our GT4.

“We always had a beginner car, which had to fight into GT4 but also should be as affordable as possible.

“The Cayman always had to do the stretch between entry level but also it has to be in Pilot Challenge.

“For me, I was triggering the discussion, ‘Is that really a good thing?’ To have the entry level car, it’s always compromised.

“Everyone looks at Pilot Challenge and GT4 America on how these cars are doing. I think the first Cayman was €110,000, you could buy a race car from Porsche. It had the 3.4-liter Cayman engine with 285 horsepower.

“Then we did the first step with the 718 and it got 425 horsepower. Then this wasn’t enough and we put in the four-liter. Currently we have a 500 horsepower GT4 RS Clubsport.

“Is that a perfect entry level car? Yeah, somehow. But the discussion was not about at one point should we decouple a GT4-homologated car from the entry level car.

“At the same time, the 718 combustion engine was discontinued.

“It was a mix of both. But I think it’s a good strategic move to decouple the GT4-homologated race car from an entry level race car.

“The road car electronics [in a Cayman] make the car affordable. You can leave a PDK in the car, which brings a lot of safety features as well. It’s cheaper to run.

“But the GT4 customers, they’ve asked for motorsport electronics, sequential gearbox, [and a car that’s] easier to troubleshoot, and I think that’s why the decoupling of the two cars at one point makes sense.

“In the end, GT4 was just getting more competitive.”

The notable differences between the two models is a smaller rear wing on the GT4 R, added weight (1,515 kg, compared to 1,260 kg in the Cup car), in order to bring it into SRO’s GT4 performance window, along with a one-inch narrower wheels and  five-lug pattern, also per regulations.

Holzmeyer dismissed claims that the Cayman was less of a race car than the 911.

“That perspective was never an argument,” he said. “For us, the Cayman was always as much of a sports car as the 911.

“Of course the public perceives the Cayman as the little brother and the 911 as the big brother, but I think customer appreciate that.

“I think the beauty is now that teams and drivers can now run Sprint Trophy by PCA in a Cup car, Sprint Challenge in a Cup car, they can run Carrera Cup in a Cup car, and they can run in GT4 on a Cup car platform.

“That means you share 98 percent of the parts. It’s all the same tools. It’s the same setup that you operate. It’s one car.

“It’s easier for the driver. If somebody races Sprint Challenge and wants to go to GT4 racing, they have to adjust to a Cayman at the moment.

“But now it’s all the same 911 platform. I think that’s a big benefit for the drivers, just for versatility, plus for the teams as a business to operate the cars.”

The car, priced ay $375,000 USD, including import and delivery for North American customers, will first go to Pilot Challenge teams in October, then followed by customers planning to race the car in Pirelli GT4 America.

Holzmeyer said those two series is where PMNA will sell cars exclusively to.

Additionally, he indicated that 718 Cayman GT4 RS Clubsport will no longer be able to race in Pilot Challenge in 2027, although the car would continue to be eligible in all SRO-run GT4 series worldwide.

John Dagys

John Dagys is the founder and Editor-in-Chief of Sportscar365. Dagys spent eight years as a motorsports correspondent for FOXSports.com and SPEED Channel and has contributed to numerous other motorsports publications worldwide. Contact John