AERO4-DS Big Brake rear axle kits for 2008 to 2015 for Toyota Land Cruiser (J200) and Lexus ZLX570 replace the factory disc brakes and use the OE parking brake assembly as a compliment to front big brake upgrade kit. High capacity braking from the Aero4 Dust Boot calipers incorporate an exclusive dust wiper seal that further protects the piston bore from dust and corrosion. BP-20 compound pads, and oversized 14.50 in rotors are matched to the OE master cylinder output, ABS function, and individual vehicle bias requirements. Enhanced brake performance, increased durability, and high-tech style compliment big wheel, tire, and suspension upgrades on vehicles with increased brake requirements from high GVW. Kit comes complete with stainless braided flex lines.