Since 2016, the Ultimate Callout Challenge (UCC) has been a celebration of diesel awesomeness that puts competitors head-to-head in three events over the course of three days to crown the ultimate champion. In conjunction with the UCC competition, there are plenty of other events to experience as a spectator or competitor: Northwest Dyno Series, Amsoil Show N Shine, DPI Expo, Epic 2.6/3.0 Sled Pull, Friday Night Burnout Competition, and the Outlaw Diesel Super Series (ODSS) Firepunk Outlaw Diesel Revenge (ORD). UCC 2025 will be held at the Lucas Oil Raceway in Indianapolis, Indiana, on May 30 through June 1. Kids (10 and under) get in free; check the UCC website for event tickets.

That’s a jam-packed weekend, but this year, there’s even more. Want in on the baddest diesel shootout? Per a Facebook post from Lavon Miller (owner of Firepunk Diesel), there’s going to be a new heads-up racing class this year. Spread the word and get your popcorn ready—this is going to to be fun. Introducing a new heads-up racing class during UCC dubbed “Seventy 2 Fast” (#Seventy2Fast).

Who

• Invite only
• 16 elite racers will be picked for this heads-up class

Specs

• Any diesel engine
• Pump-diesel only (no nitrous, water, methanol); fuel-only fun
• Air-to-air intercooler
• 6,000-pound minimum weight
• VSRacing 72/89/1.01 T4 turbo; turbo must be unmodified

Format

• Heads-up
• Instant green
• Chip-draw pairings
• No timeslips
• Single elimination (16 to final)

Inspections

• Turbo checked pre/post-race
• Non-compliant = DQ

Apply

• Email a pic of your diesel race truck to Lavon Miller of Firepunk Diesel
• Chosen drivers will get an exclusive invite link to purchase an entry and join in the action
• $1,000 entry fee includes your turbo, shipped post-payment

UCC Spectators

• Attend and watch the action
• Buy your tickets

Payout

• $5,000
• Winner takes all

Sponsors

• VS Racing
• Firepunk Diesel
• Zeigler Diesel Performance