Porsche 718 Cayman GT4 Manthey Kit

Ready to Race. A factory-approved package for drivers who want their GT4 to feel like their GT4—whether carving through downtown Toronto at dawn, powering through Calabogie corners, or setting personal benchmarks at Canadian Tire Motorsport Park.

Manthey’s signature upgrades deliver sharper response, greater stability, and a sense of control you can only appreciate once you’ve driven a GT4 equipped with them.

Track-proven engineering. Porsche everyday usability.

The Cayman GT4 is already a benchmark for balance and precision. The Manthey Kit refines the car’s already exceptional foundation, developed jointly by Porsche engineers and Manthey’s Nürburgring specialists. This isn’t an aftermarket gamble—these are Porsche Approved components designed to work harmoniously. Your GT4 retains its original warranty and its unmistakable Porsche DNA.

Note: The components of the Manthey Kit are engineered to work as a complete system and must be installed together. Select individual components may be available as stand-alone products.

For information or availability, please contact Porsche Centre North Toronto Parts Team: 647-925-1390

Aerodynamics Package

The GT4’s aero platform is already highly efficient, but Manthey’s enhancements are built with racetrack realities in mind. Road-approved front underbody elements enhance airflow and increase front axle downforce.

The carbon gurney flap on the rear wing creates the balance needed to stabilize the car at speed.

In everyday Toronto driving—cruising the DVP or navigating sweeping highway ramps—you notice how calmly the GT4 turns in, almost anticipating your steering inputs.

On track at Calabogie or Canadian Tire Motorsport Park, the effect is unmistakable: steadier braking into fast corners, more consistent rear stability through Mosport’s Turn 4–5 sequences, and the confidence to accelerate sooner.

For drivers pursuing lap time, the new wing holders even allow non-road-approved settings, letting you run more aggressive aero positions for track-only sessions or Nürburgring-style high-speed sectors.

Air Intake Grilles

Track driving throws rubber debris and curbing fragments toward the lateral intakes above the side skirts. Manthey’s specific mesh inserts reduce intake contamination and preserve consistent cooling performance.

On city streets—whether threading through Yorkville or navigating weekend cruises along Lakeshore—those grilles quietly do their job, keeping the car clean and protected. On track, they prevent buildup during extended sessions, meaning your car breathes properly even after 20 laps of CTMP.

Coilover Suspension

Suspension development took place where Manthey is most at home: the Nürburgring North Loop. The coilover system is derived directly from the 718 Cayman GT4 Clubsport, with three-way adjustable damping and upside-down architecture. Adjustable tie rods allow aggressive camber settings: –2.6° at the front and –2.2° at the rear.

Translated into real driving: steering becomes alive. Toronto’s uneven pavement and bridge seams are absorbed without the usual harshness, keeping the chassis relaxed. But on track—whether powering out of Calabogie’s Carousel or cresting the rise between Turns 2 and 3 at CTMP—you feel enhanced grip everywhere, and the car gives you clear warning as you approach its limit. It’s the kind of confidence that encourages higher corner entry speeds lap after lap.

Brake Line Set with Steel Jacket

Manthey and Porsche also co-developed a steel-jacketed brake line system, tested extensively at the Nürburgring. Pedal feel becomes sharper, response time shorter. Optional racing pads deliver stable friction over a wide thermal window, impressive durability, and minimal rotor wear.

In everyday traffic, the pedal feel translates into smoother modulation when navigating stop-and-go on Yonge Street. On track, you gain precision—those late-braking zones at CTMP’s Turn 8 or the tight braking before Calabogie’s Turn 10 become controlled, predictable, and repeatable.

Additional Components

For track events, optional towing loops (available in red, black, or yellow) mount to the front and rear via the factory threads. They’re designed to withstand circuit use and must be removed before returning to public roads.

Inside, illuminated carbon door entry panels proudly display Manthey’s red and white script. If you prefer a more restrained visual cue, Manthey door graphics are available in white or black. It’s the subtle signature of a Porsche that carries motorsport pedigree under its skin, even when parked in the garage.

A rare Porsche experience. One you can feel every time you drive.

The 718 Cayman GT4 Manthey Kit doesn’t just change lap times—it changes the driver. From dawn drives up Bayview Avenue to long sessions at CTMP, this package reveals what a Porsche GT car can become in the hands of enthusiasts who value performance, precision, and individuality.

And unlike most performance upgrades, the Porsche Approved Manthey Kit does not affect your OEM warranty when installed through Porsche Centre North Toronto.

If you’d like to discuss fitment, availability, or track setup recommendations tailored to your driving style—whether for the streets of Toronto, Calabogie, CTMP, or Nürburgring—Porsche Centre North Toronto is here to help. Call the Porsche Centre North Toronto Parts Team today: 647-925-1390