A field of 43 cars will line up for next weekend’s Pirelli GT4 America season-opener at Sonoma Raceway.
The official entry list for the pair of 60-minute races includes nine cars in the Silver Cup class, along with 14 Pro-Am competitors and 20 entries racing in Am.
Reigning Silver Cup champion RS1 Racing is focusing on the Am division this year, although last season’s runner-up Michai Stephens is back in the Silver category sharing the No. 34 Conquest Racing/JMF Motorsport Mercedes-AMG GT4 with Jesse Webb.
ACI Motorsports and STR38 Motorsports are contesting the Silver Cup class after making one-off appearances in other categories last year.
Series debutants include Hanley Motorsports, which is running a Toyota GR Supra GT4 Evo, and OGH Valkyrie Velocity which is preparing a fleet of Porsche machinery.
BMW team Random Vandals Racing is stepping up to Silver with Kenton Koch and Kevin Boehm after racing in Am Cup last season.
Nolasport will return to seek a defense of its Pro-Am title, with the driver lineup of the team’s No. 47 Porsche 718 Cayman GT4 Clubsport yet to be announced.
After finishing second in the teams’ standings last year, Premier Racing is not on the Sonoma grid, however third-placed Flying Lizard Motorsports is returning with an Aston Martin Vantage GT4 for Andy Lee and Elias Sabo.
Rooster Hall Racing will run the new BMW M4 GT4 with TC America competitors Johan Schwartz and Colin Garett, while Tim Pappas and Jeroen Bleekemolen are sharing Black Swan Racing’s new McLaren Artura GT4.
Another new car to Pirelli GT4 America is the Nissan Z GT4 from TechSport Racing, driven by Bryan Heitkotter and Tyler Stone in Pro-Am and by Eric Powell and Colin Harrison in Am.
Charlie Postins and James Clay are returning to the Am grid after claiming the title last year with BimmerWorld.
RS1, The Heart of Racing, TR3 Racing, Auto Technic Racing and GMG Racing are among the other teams involved in the 20-car Am battle, along with several entrants that also have cars entered in Silver and Pro-Am.
Track action at Sonoma begins with practice on Thursday, while the first of two races is due to start at 4:50 p.m. local (7:50 p.m. ET) on April 1.