Get Ready for Diesel Mayhem at UCC 2025!
Every year, the diesel world turns its eyes to one of the most intense, high-horsepower events in the industry—the Ultimate Callout Challenge (UCC). Held at the legendary Lucas Oil Raceway Park in Indiana, UCC is where elite builders, powerhouse trucks, and die-hard enthusiasts gather for a weekend of smoke, speed, and serious competition.
This isn’t your average truck meet. UCC is a multi-discipline showdown that pushes trucks and their teams to the absolute limit. With sled pulling, drag racing, and dyno battles on the main stage—plus a weekend packed with side events and diesel-fueled entertainment—it’s no wonder UCC has become a cornerstone of the diesel performance world.
What is the Ultimate Callout Challenge?
At its core, UCC is a battle of performance, durability, and all-out diesel innovation. Competitors face off in three major events that test every aspect of their build—from brute force to fine-tuned control. Only the most complete trucks and well-rounded teams can rise to the top.
Let’s take a closer look at the main competition events that make UCC a true proving ground:
1. Sled Pulling: The Ultimate Torque Test
What it is:
Sled pulling showcases raw pulling power. Competitors hook their trucks to a weighted sled that increases resistance as it moves down a dirt track. The farther a truck pulls it, the better the score.
Why it matters:
This event pushes trucks to their mechanical limits—engines, axles, transmissions, and more. Even the best builds can snap parts or go down in flames trying to hit max distance.
What makes it exciting:
From dirt flying to parts breaking, sled pulling is pure diesel chaos. The torque on display is insane, and when a truck finally nails a full pull, the crowd goes wild.
2. Drag Racing: Speed Meets Precision
What it is:
Head-to-head, timed passes down the drag strip. Trucks race a 1/4 or 1/8 mile stretch to clock the fastest ET (elapsed time) possible.
Why it matters:
This is where tuning, traction, and power delivery come into play. It’s not enough to be fast—you have to be consistent, dialed in, and know how to launch hard.
What makes it exciting:
UCC drag racing features everything from full-blown race builds to wild street trucks. You’ll see 4-digit horsepower trucks ripping off blistering times—and sometimes breaking in the process.
3. Dyno Competition: Numbers Don’t Lie
What it is:
Trucks are strapped to a chassis dyno to measure horsepower and torque under load. This raw data tells you exactly how powerful a truck is at the wheels.
Why it matters:
It’s the purest test of performance—no tricks, no traction issues, just numbers. This is where tuners prove their worth and engines show their full potential.
What makes it exciting:
When the dyno spins, the tension rises. The crowd watches live power readings—and sometimes, live explosions. It’s not uncommon to see trucks break 2,500+ horsepower... or come apart in the process.
Beyond the Main Events: 5 Diesel Experiences in 1
UCC is much more than just competition. It’s a celebration of diesel culture, with side events and experiences that bring the entire community together.
Here’s what else you can expect throughout the weekend:
The Poor Diesel Challenge – Budget builds battle it out for glory in this gritty, crowd-favorite competition.
Burnout contests – Smoke, style, and serious throttle control.
Show & Shine – Custom builds, pristine trucks, and wild mods on full display.
Vendor Row – Meet dozens of top brands (like us!) showcasing new products, demos, and gear.
Community vibes – UCC is a chance to meet, learn, network, and celebrate what makes diesel unique.
Whether you're there for the horsepower or just to take it all in, UCC has something for every diesel fan.
UCC’s Impact on the Diesel Industry
UCC isn’t just the biggest diesel competition—it’s the epicenter of diesel innovation. Builders, brands, and fabricators bring their absolute best to this event, often unveiling new technologies and products designed to withstand the most extreme conditions imaginable.
What used to be impossible—like a 1,000+ hp streetable diesel—is now common. And UCC is a big reason why. The event has helped push the limits of what’s possible in diesel performance and opened doors for up-and-coming brands to gain national exposure.
For many competitors and vendors, UCC is the launchpad to something bigger—new business, new sponsorships, and a spot on the map.
HSP Diesel is Back at UCC 2025!
We’re proud to announce that HSP Diesel will once again be an attending sponsor at the Ultimate Callout Challenge this year!
We’ll be set up at our booth all weekend long, showcasing our newest parts, talking builds, and of course—handing out free gifts to anyone who stops by. You’ll also find us at the official UCC merch tent, so don’t miss your chance to grab some exclusive HSP Diesel gear while you’re there.
Come check out:
✅ New HSP products & tech
✅ Fresh builds and upgrades
✅ Free HSP giveaways
✅ Exclusive merch
✅ A chance to connect with the HSP team
We love meeting our customers face-to-face, talking shop, and getting real feedback from the community that drives everything we do.
See You at UCC!
Make plans. Bring your crew. And don’t forget to stop by the HSP Diesel booth. Let’s talk horsepower, check out some killer trucks, and make some noise for the diesel community.
We’ll see you at UCC 2025—let’s make it one to remember.
