RICHMOND, Va. – Blake Koch posted the fastest lap in Friday’s final Xfinity practice at Richmond Raceway.
Justin Allgaier, who finished second at Richmond in April, posted the best average over 10 consecutive laps at 119.210 mph. He was followed by Spencer Gallagher (118.665 mph) and Brad Keselowski (117.041).
The session marked the debut of the flange fit composite body. NASCAR stated that 30 teams were using the composite body on their primary car. The composite bodies also can be used at Dover and Phoenix in the playoffs this year. Teams can use the composite body for all races next season except the superspeedways.