Pre-registration is now open for the 2017 Modified/Pro Nationals in Constantine Michigan. In addition to it being the National Championships, it will also host the J/AX North American Championships on Sunday. You will also be able to pay for pit parking, camping, and dinner tickets for the Hog Roast. Pre-registration is only available until Midnight on June 11 so don't delay. Please visit our pre-registration website . Visit our website again soon to see updates and more info posted on our Nationals Page