Order Online Securely. A large database of world-class Micro Sprint racing products from various vendors can be found at DeRouchey Racing (ESR, Hyper, RTS, KPR, Viper, Hoosier, King, Stallard, PMP, Dabco, American Racer, Bailey, Carrera, ARS, AFCO, SuperShox). DeRouchey Racing enjoys fun MicroSprints dirt track racing with friends and family.