Power Stop K6323-36 Rear Z36 Truck and Tow Brake Kit Components are engineered to handle the stress of towing, hauling, mountainous driving, and lifted trucks. Dust-free braking performance. Z36 Carbon-Fiber Ceramic formula provides the extreme braking performance demanded by your truck or 4x4 Premium stainless steel shims provide better heat dissipation for improved stopping power with virtually no noise Drilled and slotted rotors keep your brakes cool even in the most extreme conditions