Avis - Official series sponsor
Big O Tires - Sponsor of Rahal Letterman Lanigan
BorgWarner - Official series sponsor
Bosch - Sponsor of Penske Racing
Braille Battery - Sponsor of Schmidt Peterson Motorsports
Brembo Brakes - Official series sponsor
Chevrolet - Official series sponsor, primary sponsor of Andretti Autosport, sponsor of Ed Carpenter Racing, sponsor of Panther Dreyer & Reinbold Racing, associate sponsor of Panther Racing
Circle K - Associate sponsor of Andretti Autosport
ClearBook - Sponsor of Dragon Racing
Copart USA - Sponsor of Schmidt Peterson Motorsports
Dallara - Official series sponsor
Driver's Edge - Series promotional sponsor
Featherlite Trailers - Official series sponsor
Firestone - Official series sponsor, sponsor of Panther Dreyer & Reinbold Racing, associate sponsor of Panther Racing, sponsor of Schmidt Peterson Motorsports, sponsor of Penske Racing
Geico - Primary sponsor of No. 11 KV Racing Technology car
Guidepoint - Sponsor of Penske Racing
Hino Trucks - Sponsor of Penske Racing
Honda - Official series sponsor, associate sponsor of Novo Nordisk Chip Ganassi Racing, associate sponsor of Target Chip Ganassi Racing, sponsor of Schmidt Peterson Motorsports, sponsor of Penske Racing
Housby - Sponsor of A.J. Foyt racing
Impact Racing - Sponsor of Schmidt Peterson Motorsports
International - Associate sponsor of Novo Nordisk Chip Ganassi Racing, associate sponsor of Target Chip Ganassi Racing
iRacing.com - Series promotional sponsor
Kentucky Trailers - Sponsor of Schmidt Peterson Motorsports
Kingdom Racing - Sponsor of Schmidt Peterson Motorsports
Lucas Oil - Sponsor of Schmidt Peterson Motorsports
Magneti Marelli - Sponsor of Schmidt Peterson Motorsports
Mazda - Official series sponsor
Mecum Auctions - Sponsor of Panther Dreyer & Reinbold Racing
Midas - Sponsor of Rahal Letterman Lanigan
Motegi Racing - Sponsor of Panther Dreyer & Reinbold Racing, sponsor of Schmidt Peterson Motorsports, sponsor of Dragon Racing
Mothers - Sponsor of Schmidt Peterson Motorsports
Pennzoil - Sponsor of Penske Racing
Penske Truck Leasing - Sponsor of Penske Racing
Racing Electronics - Official series sponsor
Rays Wheels - Sponsor of Rahal Letterman Lanigan
Safety-Kleen - Official series sponsor, sponsor of Schmidt Peterson Motorsports
Skip Barber Racing School - Official series sponsor
Sunoco - Official series sponsor
TrueCar - Sponsor of Dragon Racing
Valvoline - Sponsor of Rahal Letterman Lanigan
Wix Filters - Sponsor of Panther Dreyer & Reinbold Racing
Xtrac - Official series sponsor
