RR Racing’s customers are making history setting new records with their RR625 supercharged ISFs. Jason Franz of California set a new 1/4 mile record run with 11.1 seconds at 128 mph on street tires. Clayton Miler hit 190 mph top speed at the Mohave Mile.
RR Racing President and chief design engineer, Rafi Raban, congratulated both Jason and Clayton for their achievements. He mentioned that RR Racing just released a new E85 Flex Tue kit for the RR625 increasing the its power by an additional 40 whp! Using the new E85 tune, we expect for more record breaking events for the ISF.