GT2 991.1 restrictor size change
#27914 from Grand Touring Committee · Rule change · TB 20-01 (2020-01 Fastrack)
In GT2. Porsche 991.1 GT3 Cup, change restrictor size in the notes as follows:
"67 70 mm"
BoP Lab / Rules / Letter #27914
#27914 GT2 991.1 restrictor size change
From Grand Touring Committee · GT2 · Rule change