After posting the quickest lap in opening Truck Series practice Friday morning at Homestead-Miami Speedway, William Byron was also fastest in final practice.
Byron posted a lap of 171.778 mph during the 55-minute session. His Kyle Busch Motorsports teammate, Daniel Suarez, was second fastest at 169.083 mph. Cole Custer (168.797 mph) was third fastest with Brady Boswell, substituting for John Wes Townley, fourth fastest at 168.403.
Chase contender Christopher Bell rounded out the top five at 168.340 mph. Bell was the only Chase driver in the top 10.
Two-time champion Matt Crafton was 15th fastest with a lap of 167.110 mph. Timothy Peters was 18th on the practice board with a lap of 166.631 mph. Johnny Sauter was the slowest of the Chase contenders at 23rd fastest with a lap of 165.042 mph.