The TeraFlex JK/JKU Front Performance Slotted Big Rotor Kit is an affordable upgrade for JK Wrangler and JKU Wrangler Unlimited models requiring increased braking performance with oversized – and heavier – wheels and 33-35” tires. This simple bolt-on upgrade doesn't require cutting or welding. FITS: JK Wrangler (2-door) JKU Wrangler Unlimited (4-door INCLUDES: Rear brake caliper relocating anchor brackets - pair Front driver slotted brake rotor (# 4303412) Front passenger slotted brake rotor (# 4303411) FEATURES & BENEFITS: Improved braking performance over factory brake system Brake caliper relocating anchor brackets retain factory brake calipers & pads No brake bleeding or brake line modification needed Larger 13. 3” (338mm) rotors for superior stopping performance – stock is 11. 9” (302mm) Slotted rotors offer better heat dissipation than smooth rotors Mill-balanced vented rotors for maximum heat dissipation Rotors feature dual bolt patterns – 5x5” & 5x5. 5” 100% bolt-on upgrade for easy installation NOTE: Requires a minimum of 17” diameter wheels. Front Performance Big Rotor Kit w/ standard brake rotors (# 4303480) also available. INSTALL TIME: 2 Hours