Zuffenhausen officially teamed up with Manthey to produce this insane factory-backed performance upgrade kit for the 911 GT3.
When equipped with the new Manthey Kit and unleashed on the Nürburgring, the 992.2 GT3 set a lap time of 6:52.981 minutes, which Porsche points out is 2.76 seconds faster than the 992.1 GT3 with ...
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