The 2014 IDRC Rulebooks have been updated to reflect the huge amount of feedback we’ve received! We’ve added two brand new classes, the “IDRC OUTLAW Class and the IDRC PRO ALL MOTOR Class”. Another big change we made includes the new maximum slick size of 25-inches in the PRO-AM ALL MOTOR Class. All of the new rules are available under our “Rules” tab at the top of the page. Let us know if you have any questions by sending us an e-mail to