Replacement Slotted Brake Rotors for the Teraflex Big Brake Kit. If you're in need of an exact replacement rotor for your Jeep Wrangler JK with the Big Brake Kit, this is the part for you. The Big Brake Kit is essential in running larger-than-stock tires on your Jeep JK, so keep the system in tip-top shape with new rotors, today! Includes: (1) High-performance 13.3" slotted/vented rotor with premium e-coat finish to resist rust. ***These will NOT work with factory brake calipers***