Motorheads unite! Auto Club Revolution has just announced that officially licensed upgrade parts manufacturers are coming to their F2P racing MMO! In their first wave of reveals, ACR notes that manufacters Brembo, HKS, Borla and AC Schnitzer are on board, in addition to 80 others that will be revealed in later time.
Auto Club Revolution is currently in closed beta (and has been since July 2011), but you can sign up on the official website. Be sure to wear your seatbelt!