he TeraFlex JK Front Big Brake Kit is designed as a factory brake upgrade for JK owners looking for a performance brake package that will handle the increased braking requirements needed after larger wheels and tires are used. The simple bolt-on upgrade installation requires no cutting, welding or adapter bracketry. The Front big brake kit features oversized 56mm dual piston calipers for increased clamping force and surface area. The 13.3” Mill-balanced vented rotor provides greater braking leverage to allow stopping distance to be decreased substantially and decreases heat buildup. The rear Big Brake Kits retain the factory brake pads and calipers and include brake caliper relocation brackets. Note: A minimum of 17” diameter wheels must be run with the big brake kits.