Thirty-five Porsche 911 GT3 Cup cars will face-off in the season-opening rounds of both the IMSA Porsche GT3 Cup Challenge USA by Yokohama and Ultra 94 Porsche GT3 Cup Challenge Canada by Yokohama championships at Sebring International Raceway. Both series will crown new champions in 2018 as neither 2017 GT3 Cup Challenge USA series’ titlist Jake Eidson nor two-time Canadian Champion Scott Hargrove are entered for title defense efforts this year. Hargrove has moved-up to the Pirelli World Challenge GT competition with regular entrant Pfaff, winning both races held thus far. The first of the two 45-minute race events scheduled for Sebring will run on Thursday, March 15, the second on Friday, March 16.
Both of the North American Porsche GT3 Cup Challenge series are among the most hotly contested one-make championships around the world. The series contend twin, 45-minute races in support of major racing series in the United States and Canada. Each enjoys a Platinum class, which use the latest generation Porsche 911 GT3 Cup car – which is based on the road-going Porsche 911 GT3 production sports car, 2017 and 2018 model years. The Gold class also uses a GT3-based 911 but of 2014 – 2016 model years. The Porsche 911 GT3 Cup is the world’s most produced racing car with competition variants being produced on the same Zuffenhausen, Germany assembly line as the road-going 911 street variants.
The two series will race together for overall and class honours. Each will earn points for their respective championships.