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Burton laid down an early speed of 180.481 mph that couldn’t be topped. The lap time was .175 seconds ahead of the second quickest time, which was held by Sheldon Creed (179.431 mph).
Johnny Sauter, still looking for his first win in the Bluegrass State, was third on the board (179.336 mph). Rookie Tyler Ankrum (177.701 mph) and reigning champion Moffitt (176.985 mph) rounded out the top five.
Prior to the session, NASCAR confiscated Friesen’s No. 52 car due to the rear firewall placement in relation to the rear clip. Friesen will have to start at the rear of the field for going to a backup.
Though mired down in 28th on single-lap speed, Spencer Boyd turned 33 laps in the session, the most of the 34 trucks entered for the race. Brandon Jones topped the 10-lap average at 165.499 mph; only the No. 51 and Boyd made a run of at least 10 laps.
In final practice, Moffitt posted the top seed at 181.861 mph, .124 seconds ahead of Enfinger (181.104 mph). The No. 24 truck was in the top five for most of the 55-minute session, but in the waning laps jumped up the leaderboard.
Creed was third on the scoring pylon (180.819 mph), with Jones (180.270 mph) and Sauter (180.114 mph) rounding out the top five.
Despite being 31st on one-lap speed, Ray Ciccarelli turned 38 laps, the most of the 34 drivers. Burton topped the 10-lap average at 177.273 mph.
Qualifying for tonight’s race is set to get underway at 4:05 p.m. ET. The green flag is scheduled to fly shortly after 7:30 p.m.