Drag Illustrated announced today that Pro Line Racing Engines will continue as a major partner of the Drag Illustrated Winter Series presented by J&A Service, extending one of the most influential technical and competitive relationships in modern Pro Mod racing. The partnership once again includes the popular $5,000 Off The Trailer Bonus, awarded to the provisional No. 1 qualifier during the opening round of Pro Mod qualifying at the World Series of Pro Mod.
Pro Line Racing Engines has become a global force in high-performance drag racing, providing championship-winning engine programs, parts, and turnkey solutions to teams worldwide. Their partnership with the Winter Series reflects a mutual commitment to supporting racers on the biggest doorslammer stage of the winter season.
“As a whole, we believe in supporting the places our customers race, but the energy, enthusiasm, and excitement around the DI Winter Series and the World Series of Pro Mod is off the charts,” said Eric Dillard, Co-Owner of Pro Line Racing Engines. “There’s no doubt these events are shaking up the drag racing community, and our whole team is excited to be part of it.”
The Off The Trailer Bonus emerged from a conversation between Dillard, Drag Illustrated Founder Wes Buck, and Bradenton Motorsports Park Owner Vic Alvarez, who sought to add an extra layer of intensity to the opening round of WSOPM qualifying. The result was a $5,000 bounty that immediately became one of the most thrilling storylines of the event.
“Eric and the whole team at Pro Line are long-time friends of Drag Illustrated,” said Buck. “Having their support – and bringing back the Off The Trailer Bonus – just adds fuel to the fire. This group of competitors needs little motivation, but they always respond when there’s something big on the line. I expect to see a lot of racers swinging for the fences early on Thursday.”
Pro Line Racing Engines’ enduring commitment to supporting racers has made them a cornerstone of the doorslammer community. Their dedication to innovation, service, and reliability makes them an ideal partner for a championship series that places a premium on excellence at every level.
The Drag Illustrated Winter Series opens December 4-7, 2025, at Bradenton Motorsports Park.
This story was originally published on December 2, 2025. 
