The Rock Krawler Long Arm Upgrade the ultimate long arm upgrade for your Jeep JK when it comes to versatility and overall package. The JK Long Arm Upgrade features improved handling and drivability and a Rock Krawler first Revolutionary Independent Three Link conversion front and rear. Upgrade your JK suspension system now with the most versatile, powerful and performance capable suspension lift system out there. Get the Rock Krawler Long Arm Suspension Upgrade. We are offering these suspension kits from Rock Krawler at very low prices with free shipping.