{"id":892419,"date":"2025-12-29T10:17:52","date_gmt":"2025-12-29T10:17:52","guid":{"rendered":"https:\/\/www.supercars.net\/blog\/?p=892419"},"modified":"2025-12-29T10:17:52","modified_gmt":"2025-12-29T10:17:52","slug":"gt3-rs-with-manthey-kit-beats-ford-mustang-gtd","status":"publish","type":"post","link":"https:\/\/www.supercars.net\/blog\/gt3-rs-with-manthey-kit-beats-ford-mustang-gtd\/","title":{"rendered":"GT3 RS with Manthey Kit Beats Ford Mustang GTD"},"content":{"rendered":"

Ford\u2019s Mustang GTD<\/a>\u2014already boasting a sub-seven-minute N\u00fcrburgring lap\u2014proved its pace on the Top Gear test track by beating the Porsche 911 GT3 RS. It clocked a 1:13.7 lap, more than a second quicker than the standard GT3 RS, thanks to an 815-hp supercharged 5.2-liter V8, serious braking power, and exceptional grip and stability at the limit.<\/p>\n

Now, the Porsche is back for revenge\u2014this time armed with the Manthey Performance Kit. The upgrade focuses purely on aerodynamics and chassis tuning, boosting downforce and track efficiency without touching the engine. The GT3 RS<\/a> still uses its 518-hp 4.0-liter naturally aspirated flat-six screaming to 9,000 rpm, but aero gains push downforce from 860 kg to around 1,000 kg at 175 mph before the system eases off to protect the tires. The package isn\u2019t cheap, costing well over $100,000, but it\u2019s built for one purpose: speed.<\/p>\n

And the result speaks for itself. The Manthey-equipped GT3 RS set a blistering 1:13.03\u2014four-tenths quicker than the Mustang GTD despite giving up roughly 300 hp, and about 1.5 seconds faster than the stock GT3 RS. It registered 1.92 g under braking into Hammerhead and 2.05 g laterally at Follow Through\u2014slightly below the GTD\u2019s peaks, but ultimately faster through corners thanks to its higher minimum speeds (103 mph vs. 98 mph).<\/p>\n