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The Ultimate Callout Challenge brings together the best competitors in North America where they battle it out by competing in a drag race, sled pull and dyno competition.

With Diesel World magazine, you get one-of-a-kind coverage of the diesel-powered market. Learn about the hottest new products that can improve power, mileage and longevity of your vehicle. You also get to enhance your ownership experience with our in-depth articles, road tests and evaluations.

Strictly for the racing trade, PRI connects manufacturers of racing products and technology with the all-important distribution pipeline of racing retailers, race engine builders, race car builders and warehouse distributors, in addition to thousands of professional race teams.

The Performance Racing Industry Trade Show annually attracts thousands of members of the racing industry from all 50 states and 70 countries. With over 1,100 companies exhibiting in 750,000 gross square feet of new race products, services, machinery, simulation & testing technologies, and trailer exhibits, it is the world’s largest gathering of motorsports professionals.

The SEMA Show is the premier automotive specialty products trade event in the world segmented into 12 sections with over 2,400 exhibitors and a New Product Showcase featuring nearly 3,000 newly introduced parts, tools and components.

The SEMA Show draws the industry's brightest minds, hottest products and over 70,000 domestic and international buyers to one place, the Las Vegas Convention Center. In addition, the SEMA Show provides attendees with educational seminars, product demonstrations, special events, networking opportunities and more.

Do you think you and your vehicle have what it takes to capture the glory at Diesel Power Challenge? We invite owners from all over the U.S. to enter your modified machines, for a chance to earn a spot and compete in the all-diesel torture test that’s known by most of you simply as “DPC.” Each year, all entries are reviewed by the Diesel Power staff and 10 lucky finalists are selected to participate in the 5-day event, and give it their all to defeat the past-year’s winner (and be crowned Diesel Power Challenge CHAMPION).