RPM is a company of special suppressants to use with tailpipes, making cars' tailpipes spit out cool fire at the nighttime. Winford Bradford Rutherford, Riley , Bruce Miller and Barry DePedal are the bearers of this sponsor at the Piston Cup races.
Gallery
Sponsor cars
Winford Bradford Rutherford (Formerly)
Riley (Formerly)
Bruce Miller (Formerly)
Barry DePedal (Present)