Jeep JK/JKU Front Big Brake Kit w/ Slotted Rotors 07-18 Wrangler JK/JKU TeraFlex

TeraFlex SKU: 4303420-FNNT
Regular price


The TeraFlex JK/JKU Front Big Brake Kit is a must for JK Wrangler and JKU Wrangler Unlimited models requiring increased braking performance with oversized - and heavier - wheels and 33-35 inch tires. This simple bolt-on upgrade doesn't require cutting, welding, or adapters.

  • JK Wrangler (2-door)
  • JKU Wrangler Unlimited (4-door)


  • Brake calipers - pair
  • Brake pads (P/N 4303430) - all 4
  • Front Driver Slotted brake rotor (P/N 4303412)
  • Front Passenger Slotted brake rotor (P/N 4303411)
  • Sold As A Kit

Features and Benefits:

  • Improved braking performance over factory brake system
  • Oversized 56mm (2.2 inch) dual-piston calipers for increased clamping force and surface area
  • Larger 13.3 inch (338mm) rotors for superior stopping performance - stock is 11.9 inch (302mm)
  • Slotted rotors offer better heat dissipation than smooth rotors
  • Mill-balanced vented rotors for maximum heat dissipation
  • Rotors feature dual bolt patterns - 5 x 5 inch and 5 x 5.5 inch
  • Composite-resin, semi-metallic pads have excellent cold-stopping power for maximum initial speed scrub w/ increased pad life and reduce noise and dust
  • 100 percent bolt-on upgrade for easy installation


  • Requires a minimum of 17 inch diameter wheels
  • Front Big Brake Kit w/ Standard Smooth Brake Rotors (P/N 4303400) are also available
  • Install Time: 3 Hours
  • SKU: 4303420