Russell Mitten is the former builder of the JEI and gf1 chassis, now building his own RPM Sprint and super sportsman chassis.
powri
POWRiWest
powriWarSprints
powriqmr
Belle Clair Speedway
Lake Ozark Speedway
Sweet Springs Raceway
IMRA Racing
Port City Raceway
POWRi Stock Mod
Lubbering Oil Co
SpeedyBC Store
S2F