- Porsche 992 GT3 RS with Manthey kit spied testing on the Nurburgring with no disguise for the first time.
- Manthey mods include revised suspension and a vertical fin where the window should be to help it beat stock RS’s 6:49.33 Nurburgring time.
- Upgrades will be available though official Porsche dealers later this year.
Porsche’s 911 GT3 RS is like a racecar with carpets, but it’s still not extreme enough for Manthey Racing. The Nurburging-based motorsport outfit is readying one of its legendary upgrade kits that will make the RS even crazier to look at, and even faster around the Nordschleife.
The stock GT3 RS is no slouch. It posted a 6:49.33 at the ‘Ring in 2022, a feat made possible by its multiple aero devices including a huge adjustable rear wing with an F1-style drag reduction system and a wild front front-end design that features different fenders and doors from the regular GT3.
Related: Manthey’s Porsche 911 GT3 RS Looks Even Crazier Than An Actual GT3 Cup Car
But these first shots of a totally disguise-free Manthey Racing variant show that it draws even more heavily on motorsport aero know-how, adding canards to the front bumper, aero covers on the rear wheels and an even bigger diffuser with fins so large they’re almost touching the surface of the road.
The gigantic rear wing gets new, squarer end planes and the roof has eight small vertical fins instead of just two. But the real showstopper is the central dorsal fin mounted on a carbon panel where the rear window used to live.
Manthey’s modification kits don’t usually provide a power boost, so the naturally-aspirated 4.0-liter flat-six is likely making the same 518 hp (525 PS) as a regular GT3 RS, and will of course be hooked up to dual-clutch transmission driving the rear wheels. But you can be sure that Manthey’s engineers have been busy underneath the 911’s wheelarches, upgrading the brake and suspension components and tweaking the geometry.
How much time do all of these upgrades shave from a Nurburgring lap? Manthey hasn’t told us yet, but the fact that its test car is now running minus any disguise means an announcement must be imminent. In the meantime we can certainly make an educated guess based on the 8.45 seconds the MR-kitted GT2 RS cut from a stock GT2 RS’s time.
If the Manthey GT3 RS package is worth around 8 seconds, that would mean a laptime in the 6 minute 41 second range for the modern 12.9-mile (20.8 km) course, making it the second fastest road car after the AMG One (6:35.183) and faster then the old 991.2 GT2 RS MR (6:43.300), both of which are far more powerful and no longer available to buy. And since the equipment will be available to buy through Porsche dealers – probably for the price of a nearly-new 718 – Porsche will be able to claim production car status.
And it might surprise you to learn that the RS is still in production. Though Porsche revealed a new 992.2 generation 911 in May, the 2025 lineup only consists of the base Carrera and newly-hybridized GTS. The GT3 RS (GT3 builds have finished) and Turbo are carried over from 2024.
