This module allows you to add the Trail Activ Smart Mode to vehicles with the Smart-Lok™ Differential Kit sold as an accessory or to change to the Trail Activ Smart Mode on vehicles equipped with a standard Smart-Lok™. The TRAIL ACTIV mode has been designed for aggressive riding, delivering the ultimate cornering precision. When high engine torque and/or an increase in vehicle speed is detected, Smart-Lok will progressively engage the front end and maintain it engaged until throttle release or vehicle speed reduction. The progressive engagement allows for smoother and lower steering effort. Only one Smart Mode Module can be installed at a time. Models with Smart-Lok™ Differential