Porsche 718 Cayman GT4 RS
The 718 Cayman GT4 RS is the most extreme road-legal 718 — a track weapon developed by Porsche’s GT division using the 911 GT3’s 4.0-litre naturally aspirated flat-six at full 493 hp revving to 9,000 rpm. Active aerodynamics, a motorsport-spec double-wishbone rear axle, PDK-only transmission, and carbon-fibre bodywork enable lap times that rival dedicated track machines. A direct road-going evolution of the GT4 RS Clubsport race car.
Key Specs
- Engine: 4.0 L NA Flat-6 (GT3-sourced)
- Power: 493 hp / 450 Nm
- Redline: 9,000 rpm
- 0–100 km/h: 3.4 sec
Our 2026 Porsche 718 Cayman GT4 RS Rating
FORPORSCHE RATING: 10/10
Pros
500 hp GT3 RS-derived naturally aspirated flat-six; 9,000 rpm redline; aero package generates real downforce; PDK standard; the fastest and most capable road-legal 718; genuine race car performance.
Cons
Uncompromising track focus compromises daily use; extremely expensive; waiting lists common.
Verdict
The ultimate Cayman. GT4 RS is a race car with number plates. 500 hp at 9,000 rpm with real aerodynamic downforce makes this the most capable road car Porsche builds in this category. Pure motorsport DNA.
Porsche 718 Boxster & Cayman Powertrain Guide
- 718 Boxster: 2.0L 4-cyl Turbo / 300 hp / 280 lb-ft / 0-60: 4.9 sec
- 718 Boxster S: 2.5L 4-cyl Turbo / 350 hp / 310 lb-ft / 0-60: 4.4 sec
- 718 Boxster GTS 4.0: 4.0L H6 Naturally Aspirated / 394 hp / 310 lb-ft / 0-60: 4.0 sec
- 718 Spyder RS: 4.0L H6 Naturally Aspirated / 500 hp / 346 lb-ft / 0-60: 3.2 sec / 9,000 rpm
- 718 Cayman: 2.0L 4-cyl Turbo / 300 hp / 280 lb-ft / 0-60: 5.1 sec
- 718 Cayman S: 2.5L 4-cyl Turbo / 350 hp / 310 lb-ft / 0-60: 4.6 sec
- 718 Cayman T: 2.0L 4-cyl Turbo / 300 hp / lightweight focus / 0-60: 4.9 sec (manual)
- 718 Cayman GTS 4.0: 4.0L H6 Naturally Aspirated / 394 hp / 310 lb-ft / 0-60: 4.2 sec
- 718 Cayman GT4 RS: 4.0L H6 Naturally Aspirated / 500 hp / 346 lb-ft / 0-60: 3.2 sec / 9,000 rpm