The 2026 Ultimate Callout Challenge was epic. The meanest, nastiest, and most no-holds barred diesel trucks in the country gathered in Indy to do battle on the dyno rollers, on the drag strip, and with a sled hooked to them.
There are trucks showing up that make a documented 3,000hp and others that are literally being finished as you read this. The Ultimate Callout Challenge is honestly the pinnacle of diesel performance and the trucks which show up are built to dominate or blow up trying. Most of the big name shops and builders in the country are there each year. The Lavon Millers the Jesse Warrens the Wesley Beechs of the world and a host of others on the grounds at IRP.
