Saying the next step of his racing career will be revealed soon, 2018 World of Outlaws Case Late Model Series champion Mike Marlar of Winfield, Tenn., announced Wednesday the conclusion of his 10-year run with team owner Ronnie Delk.

Calling Delk "the absolute best friend and car owner a person could ever ask for," the 45-year-old Marlar said in a team release that he's "excited for the next chapter of our journey together."

Marlar won 73 of his 285 career feature victories in Delk's Super Late Model since late 2013, including 16 WoO victories and 14 on the Lucas Oil Late Model Dirt Series. Along with his WoO title, the driver of the No. 157 was a two-time Wild West Shootout champion and three-time winner of the Knoxville Lucas Oil Nationals at Knoxville (Iowa) Raceway.

VIDEO: Mike Marlar takes five minutes to chat with Derek Kessinger during Castrol Fast Five earlier this year. 

“My partnership with Mikey has been a great thing. I’ve enjoyed it, and we’ve built something we can both be really proud of," said Delk (pictured with Marlar), who owns and operates Delk Equipment Sales of Crossville, Tenn., and tapped Marlar after previously fielding a car for Michael Asberry. "We have achieved a lot of cool things together in racing, and now we want to expand that partnership to other things."

Marlar thanked everyone who was part of the team's success including his wife Stacy, Delk's wife Karla and longtime crew members Josh Davis and Jerry "Donk" Sprouse.

“My relationship with Ronnie goes way beyond the traditional one of a driver and owner. We’re great friends; he’s my greatest ally, and he has enriched my life," Marlar said. "In the past 10 seasons I have never pulled on the track without knowing that I had the best equipment available, and that Ronnie fully believed in me. He built a premier team from the ground up, and I can never thank him enough for the opportunity of being his driver."