Upgrade your ancient drum brakes to modern day disc brakes. For improved braking both on and off road, this is one of the best options for you. The TeraFlex disc brake kit includes brake cables for emergencies and the kit is perfect for anyone who wants to go to the next step with their disc brakes and axles. These are used as upgrades with the factory Jeep drum brakes and helps to hold the power more than other kits do.