Porsche has not yet announced a Nürburgring Nordschleife lap time for the Manthey-equipped GT3 RS, but the standard car completed the run in 6:44.848. The Manthey kit for the standard 992 ...
It just became that much easier for Americans to get even more out of the 992-generation 911 GTS RS. Manthey Racing, in which Porsche owns a majority stake, has been releasing upgrade kits for the ...
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