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JK: Front Performance Big Rotor Kit w/ Slotted Rotors – 5x5” & 5x5.5”

SKU 4303490
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This item ships for free! (Continental U.S. only)

TeraFlex JK: Front Performance Big Rotor Kits are an affordable upgrade for JK Wrangler/Unlimited models with oversized and heavier wheels/tire combos requiring increased braking performance. A must for 33-35” tires.

This simple bolt-on upgrade doesn’t require cutting, welding, or adapters.


• JK Wrangler (2-door)

• JK Wrangler Unlimited (4-door)


• Front brake caliper relocation anchor brackets - pair

• Left Front Slotted Brake Rotor – 5x5” & 5x5.5” (# 4303412)

• Right Front Slotted Brake Rotor – 5x5” & 5x5.5” (# 4303411)

• All necessary hardware

Features & Benefits:

• Min. Wheel Diameter: 17”

• Rotors feature dual bolt patterns – 5x5” and 5x5.5”

• Improved braking performance over factory brake system

• 100% bolt-on upgrade w/ basic hand tools

• Brake caliper relocation anchor brackets retain factory brake calipers and pads

• No brake bleeding or brake line modification needed

• Larger 13.3” rotors for superior stopping performance (vs. 11.9” stock rotors)

• Mill-balanced vented front rotors for maximum heat dissipation

• Slotted rotors offer better gas dissipation than smooth rotors


• Requires a minimum wheel diameter of 17”.

• An 8-lug option is available but must be purchased in combination w/ the Dana 30/44 Front Axle 8-Lug Locking Hub Conversion Kit.

Install Time: 2 Hours


Front Big Brake Kits:

• w/ Slotted Rotors (# 4303420)

• w/ Vented Rotors (# 4303400)

Performance Big Rotor Kits:

• Front Kit w/ Slotted Rotors (# 4303490)

• Front Kit w/ Vented Rotors (# 4303480)

• Rear Kit w/ Slotted Rotors (# 4304460)

• Rear Kit w/ Solid Rotors (# 4304450)

Replacement Parts:

• Front Big Brake Kit Pads – All 4 (# 4303430)

• Slotted Rotor – Front Left (# 4303412)

• Slotted Rotor – Front Right (# 4303411)

• Vented Rotor – Front - Each (# 4303410)

• Slotted Rotor – Rear Left (# 4304412)

• Slotted Rotor – Rear Right (# 4304411)

• Solid Rotor – Rear – Each (# 4304410)

Weight:  58.0 lbs

Vehicle Type:
JK Wrangler
JKU Wrangler Unlimited

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November 21st 2015
I am really really liking these brakes. They're built with quality just like everything else that comes from TeraFlex. The stopping power is dramatically better and can't wait to get my hands on their new rear setup
March 25th 2017
Damon W Petersen
Just put these brakes on. After bedding in some Hawk HPS brake pads there is a huge improvement and no comparison to the stock brakes. It is still smooth but alot less pedal required to stop running 35" tires. Will definitely be adding the rears soon. It is a simple concept. Just think of an old record player. What is easier to stop, grabbing the edge of it or pushing your finger down on it more towards the center.