Kahne -- who finished seventh in the Sprint Cup Series on Saturday and third in the Nationwide Series on Friday at Texas Motor Speedway -- surged to the front in the 155th lap of 200 to notch his fourth win in five starts in the Camping World Truck Series. James Buescher finished second with Matt Crafton third.
Brad Sweet qualified the No. 4 truck fifth, but Kahne had to start at the rear of the field because of the driver change.
Pole-starter Nelson Piquet Jr. dominated the early stages of the race, leading 85 of the race's first 100 laps. But Piquet became mired in traffic after a lengthy pit stop shuffled him back to fifth during the race's third caution.
He worked his way back to second place until incurring a pit-road speeding penalty during the final caution period. He rallied to finish seventh.
John King's grasp on the series' points lead fizzled early in the race, when he spun and nosed into the inside wall on the backstretch on Lap 4 to bring out the race's first caution. King returned to the track after repairs, but wound up completing finishing 33rd.
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