Kyle Busch made it 5 for 5 this season in the Camping World Truck Series, holding off Kyle Busch Motorsports teammate Darrell Wallace Jr. on Thursday night at Kentucky Speedway.
Busch has six straight series victories dating to last season and 40 overall. The Sprint Cup driver led the final 55 laps in the 150-lap race. He also won at 1.5-mile track in 2011.
Wallace, the winner two weeks ago at Gateway in Madison, Illinois, finished 1.844 seconds behind Busch.
Kyle Busch Motorsports drivers have won nine of the series' last 12 races, with Wallace winning twice and Erik Jones once. Toyota has won 10 straight races, starting with Jones' Phoenix victory last year.
Ryan Blaney was third, followed by Timothy Peters, Brad Keselowski, Matt Crafton, Austin Dillon, Ron Hornaday Jr., points leader Johnny Sauter and Ben Kennedy.
Sauter has an eight-point lead over ThorSport Racing teammate Crafton, the defending series champion and a two-time winner this season.