Porsche Retires The Cayman From Its GT4 Program, Hands The Job To A 911

Nine years is a long production run for any race car, but that's exactly how long the 718 Cayman GT4 Clubsport held down GT4 duty for Porsche. Now that the mid-engined sports car has been discontinued, Porsche Motorsport needed a new foundation for its entry-level customer racer, and the answer turns out to be the car everyone assumed would stay one class above: the 911.

Meet the 911 GT4 R, a purpose-built racer that shares its bones with the 911 Cup car, which itself is derived from the road-going GT3. That means the same naturally aspirated 4.0-liter flat-six sits behind the driver, though Porsche's engineers have massaged it up to 513 horsepower and 346 lb-ft of torque, numbers that put it in the same neighborhood as a GT3 RS. Of course, few customers will ever see that peak output on track, since Balance of Performance rules mandate 53.7mm intake restrictors that trim things down to a more manageable 424 hp depending on the series and event.

Where the GT4 R really separates itself from its Cup sibling is in how that power gets to the ground. Instead of a paddle-shift setup, Porsche has bolted in a proper six-speed sequential dog-box paired with a four-disc racing clutch, a setup that rewards a driver's mechanical sympathy over button-pushing. The car also rides on wheels an inch narrower than the 911 Cup's, using conventional five-lug hubs rather than center-lock hardware, and it gets dual-adjustable dampers with three selectable spring rates so teams can dial in the chassis for anything from a tight street circuit to a fast, sweeping road course.

Aerodynamically, the standout piece is a rear wing that adjusts across 11 different positions, giving teams a wide window to balance downforce against straight-line speed depending on the track. Porsche also leaned on carbon fiber for the doors, engine cover, and various aero pieces to keep weight in check, while the cockpit gets an integrated data logger and a new 10.3-inch digital cluster to help drivers and engineers dissect every lap.

Matthias Scholz, Porsche Motorsport's Director of GT Racing Cars, framed the switch as a natural extension of the brand's identity rather than just a stopgap replacement. According to Scholz, the 911 carries Porsche's motorsport DNA more directly than any other model, and moving that ethos down into the GT4 ranks opens up new performance possibilities while also benefiting from engineering work already done on the 911 Cup program.

Porsche itself plans to run the GT4 R in North America's IMSA Michelin Pilot Challenge and SRO's Pirelli GT4 America series, but the car's eligibility extends much further. Customers will be able to campaign it in the Porsche Sprint Trophy PCA, Porsche Sprint Challenge North America, Porsche Carrera Cup North America, and SRO GT America, among other grids. All of that access comes at a price, with the 911 GT4 R starting at $375,000 in the US.

It's a significant shift for a category that, since 2016, produced roughly 1,500 Cayman-based GT4 racers. Whether the 911 GT4 R can match that kind of volume remains to be seen, but Porsche is betting that giving privateers a slice of 911 Cup engineering, wrapped in a slightly friendlier and more affordable package, will keep grids full for years to come.