It was a great weekend for JASPER Race Products at Martinsville Speedway in the STP 500. Drivers running JASPER transmissions and differentials finished in the Top Six positions. Denny Hamlin, running a JASPER 4-Speed Transmission finished first. It was Hamlin's 5th win at Martinsville. Brad Keselowski, who won last week at Fontana, finished second running a JASPER Differential.
The NASCAR xfinity Series did not run this weekend.