Tap here to read more about Front & Rear Brake Disc Rotors w/ Brake Pads for John Deere Gator XUV550 RSX850i. Premium Quality Replacement Part. Front and Rear Brake Disc Rotor with Brake Pads. Compatible with John Deere Gator Utility Vehicle Models. XUV550 S4 (040001 -). 4 x Brake Disc: M166762. Front Brake Pad (2 Set). AM148144, AM147009, AM146184, AM148755. Rear Brake Pad (2 Set).