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JK: Front Big Brake Kit w/ Vented Rotors – 5x5” & 5x5.5”

SKU 4303400
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This item ships for free! (Continental U.S. only)

The TeraFlex JK: Front Big Brake Kit is vital for JK Wrangler/Unlimited models with oversized and heavier wheel/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 Big Brake Calipers – pair

• Front Big Brake Pads (# 4303430) – all 4

• Front Vented Brake Rotors – 5x5” & 5x5.5” (# 4303410) – pair

• 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

• Oversized 56mm (2.2”) dual-piston calipers for increased clamping force and surface area

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

• Mill-balanced vented rotors for maximum heat dissipation

• Composite-resin, semi-metallic pads have excellent full temperature stopping power for maximum initial speed scrub w/ increased pad life and reduce noise and dust


• Requires a minimum wheel diameter of 17”.

• On 2007-2011 JK Wrangler/Unlimited models, we recommend upgrading the stock master cylinder to our Brake Master Cylinder Kit w/ Oversized Bore (# 4303450).

Install Time: 3 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:  92.0 lbs

Vehicle Type:
JK Wrangler
JKU Wrangler Unlimited

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November 21st 2015
Shawn Houser
I recently jumped up to 37 inch wheels and noticed a significant drop in my braking performance. I ordered the front big brake kit from Teraflex. The first thing I noticed was how much more massive these things are over the stockers. Installation was a breeze. The product is very well made and they look awesome! I opted for the slotted rotors. They stop on a dime! i will be replacing the rears as well with Teraflex.