RockJock Jeep JL Wrangler Unlimited 4Door Bolt-On Antirock Rear Sway Bar Kit (Forged Arms - 1in Bar)RockJocks Antirock rear sway bar kit for JL Wranglers and Unlimiteds, when used in conjunction with a front Antirock sway bar kit, provides balanced performance of front and rear suspension for rugged off road conditions. It gives the driver increased traction by balancing and distributing the weight and traction over all four tires. The Antirock off road sway bar is designed to directly replace the stock Jeep sway bar. The included 50 in. x 1 in. bar