TracMax by ThunderMax is an easy to install ABS wheel size correction module that is designed to help you regain full ABS functionality on your 2014-2015 Harley Davidson® Touring® and 2015-2016 Softail® models that has been equipped with an aftermarket big front wheel kit. TracMax comes 100% assembled, ready to install with no wire-cutting or splicing required - installs in under 15 minutes. Simply plug the TracMax into the factory ABS wiring harness and it seamlessly corrects the wheel speed signal of the front wheel based on wheel diameter.